Answer:
825 g
Step-by-step explanation:
Here's my work:
500g Cl2 l 1mol Cl2 l 2 mol NaCl l 58.5 g NaCl
l 71 g Cl2 l 1 mol Cl2 l 1 mol NaCl
= 823.94 - the rounding can be a little off
The first thing you have to do is convert the 500 g of Cl2 into moles. So you get the mass of Cl which is 35.5, but Cl is diatomic by itself so you multiply 35.5 x 2 and get 71. now on the third column you are comparing the mol ratios of the equation. The equation is 2Na + Cl2 ---> 2NaCl, so you see that there is no coefficient in front of Cl2 so that means there is 1 mol, and then you see that in the product there is a coefficient of 2 in front of NaCl so that means there is 2 moles. Then finally you have to convert the moles backs into grams where you just add the masses of Na and Cl . You multiply across the top and then divide that number by the bottom row.
63.625 rounded to the nearest tenth
Answer:
63.6
Step-by-step explanation:
63.625
63.6
Answer:
63.6
Step-by-step explanation:
The tenth's place is one after the decimal point, and since 2 is closer to zero than ten, the 6 stays the same, making the answer 63.6.
Hopefully this helps- let me know if you have any questions!
Find the measure of the missing angles .
Answer:
x=39
y=129
Step-by-step explanation:
x=180-51-90
y=180-51
11. Solve the triangle then round the answers to the nearest tenth.С840550A11 ydB
angle A = 41.0 degrees
Side AC = 9.1 yd
Side CB = 7.3 yd
Explanation:11) angle C = 84 degrees
andle B = 55 degrees
angle A + angle B + angle C = 180 degrees (sum of angles in a triangle)
angle A + 55 + 84 = 180
angle A + 139 = 180
angle A + 139-139 = 180 -139
angle A = 180 -139
angle A = 41 degrees
angle A = 41.0 degrees (nearest tenth)
To find side AC, we apply sine rule
c = AB = 11 yd
AC is the side opposite angle B. It is represented by b in the formula
c/sinC = b/sinB
11/sin84 = b/sin55
b = (11/sin84)(sin55)
b = 11(0.8191)/(0.9945)
b = 9.06
Side AC = b = 9.1 yd (nearest tenth)
To find side CB, we apply sine rule
a = CB
a/sinA = c/sinC
a/sin 41 = 11/sin84
a = (11/sin84)(sin 41)
a = 7.26
Side CB = a = 7.3 yd (nearest tenth)
is figure pqrstu a translation, reflection, or rotation? Explain your reasoning
PLEASE HELP ME
Answer: I'd say reflection
Answer:
It is a reflection
Step-by-step explanation:
In Geometry, a reflection is known as a flip. A reflection is a mirror image of the shape. An image will reflect through a line, known as the line of reflection. A figure is said to reflect the other figure, and then every point in a figure is equidistant from each corresponding point in another figure.
The area of a square is 16x^2 -40x+ 25. What is the perimeter of the square?
Answer:
Perimeter = 16x-20 units
Step-by-step explanation:
Given: 16x^2 - 40x + 25
Reduce perfect square trinomial: (4x-5)(4x-5)
4x-5 is your side length. Since the perimeter of a square is 4s, then the perimeter is 4(4x-5)=16x-20
PLEASE ANSWER FAST!! WIIL GIVE BRAINLIEST
Which equation correctly shows how to determine the distance between the points (9,-2) and (6,3) on a coordinate
grid?
Od-V(6-3)?+ (9-(-2))?
Od-V(6+3)²+(9+(-2))?
)9
O ơ= 6 – 9) + (3-(-2)
d-/6+9)2+(3+(-2)2
Solve the equation.
5^3x-1 = 5^5
x=?
Answer:
x= 3126/125 or x=25.008 or as a mixed number form: x=25 and 1/125
Step-by-step explanation:
isolate the variable by dividing each side by factors that don't contain the variable.
x=25
Step-by-step explanation:
evaluate the power 125x=5^5
125=3125
divide both sides by 125
x=25
Simplify the expression \((\frac{64x^{12} }{125x^{3} } )^{\frac{1}{3} }\) . Assume all variables are positive
To simplify the expression \(\left(\frac{64x^{12}}{125x^{3}}\right)^{\frac{1}{3}}\), we can start by simplifying the numerator and denominator separately.
In the numerator, we have \(64x^{12}\). We can rewrite 64 as \(4^3\) and \(x^{12}\) as \((x^3)^4\). So, the numerator becomes \(4^3 \cdot (x^3)^4\).
In the denominator, we have \(125x^{3}\). We can rewrite 125 as \(5^3\) and \(x^{3}\) as \((x^3)^1\). So, the denominator becomes \(5^3 \cdot (x^3)^1\).
Now, let's simplify the expression inside the parentheses: \(4^3 \cdot (x^3)^4 \div (5^3 \cdot (x^3)^1)\).
Simplifying each part further, we have:
\(4^3 = 64\),
\((x^3)^4 = x^{12}\),
\(5^3 = 125\), and
\((x^3)^1 = x^3\).
Now the expression becomes:
\(\frac{64x^{12}}{125x^3}\).
To simplify further, we can cancel out the common factors in the numerator and denominator. Both 64 and 125 have a common factor of 5, and x^12 and x^3 have a common factor of x^3. Canceling these common factors, we get:
\(\frac{64x^{12}}{125x^3} = \frac{8}{5} \cdot \frac{x^{12}}{x^3} = \frac{8}{5}x^{12-3} = \frac{8}{5}x^9\).
Therefore, the simplified expression is \(\frac{8}{5}x^9\).
\(\huge{\mathcal{\colorbox{black}{\textcolor{lime}{\textsf{I hope this helps !}}}}}\)
♥️ \(\large{\textcolor{red}{\underline{\texttt{SUMIT ROY (:}}}}\)
HELP
Fran has been assigned the task of determining the
probability of drawing 3 spades from a standard deck of
52 cards. Recall there are 4 suits (diamonds, hearts, spades,
and clubs) of 13 cards each, in a deck. Each card is drawn
one at a time and held until the remaining cards of the hand
are drawn.
How many ways are there to draw the first card?
o 13
O 52
04
01
52
How many ways to draw?There are 52 ways to draw the first card from a standard deck of 52 cards. Each card in the deck is distinct, so there are 52 different possibilities for the first card.
The deck consists of 4 suits (diamonds, hearts, spades, and clubs) with 13 cards in each suit. Therefore, there are 13 cards of the spades suit. Since each card is equally likely to be drawn, the probability of drawing a spade as the first card is 13/52 or 1/4.
This is because out of the 52 possible cards, 13 of them are spades. So, regardless of the specific spade that is drawn, there are 13 ways to draw a spade as the first card.
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Can someone please help me please I really need help please help me.
Answer:
Step-by-step explanation:
I can't get to act correctly either.
The answer is 1 day and 7 items.
Ariana
y = 5x + 2
Julie
y = 7x
The ys have to be the same so equate the right hand side.
7x = 5x + 2 Subtract 5x from both sides.
7x - 5x = 5x - 5x + 2
2x = 2 Divide by 2
2x/2 = 2/2
x = 1
1 day
7 items
15+2w = 5w+5 solve for w
Answer:
10/3
Step-by-step explanation:
15+2w=5w+5
15=5w-2w+5
15=3w+5
3w=15-5
3w=10
w=10/3
Answer:
10/3=w
Step-by-step explanation:
15+2w = 5w+5
15=3w+5
10=3w
10/3=w
subscript indices must be either positive integers or logicals:T/F
Therefore, subscript indices must be either positive integers or logical. True
Explanation: The statement "subscript indices must be either positive integers or logicals" is true. Subscript indices are used to identify elements in an array. A positive integer subscript identifies a particular element in an array, while a logical subscript identifies a subset of elements based on a logical condition. For example, if we have an array A, then A(1) would identify the first element of the array, while A(A > 0) would identify all elements in the array that are greater than zero. Subscript indices cannot be negative or non-integer values.
Therefore, subscript indices must be either positive integers or logical. True
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find the slope (1,3), (5,5).
Find the slope (0,-1), (2,3)
Find the slope (2,-3),(5,-4)
Answer:
Find the slope (1,3), (5,5): m = 0.5
Find the slope (0,-1), (2,3): m = 2
Find the slope (2,-3), (5,-4): m = -1/3
Step-by-step explanation:
m = y2-y1/x2-x1
Answer: 2, 1, -1/3
Step-by-step explanation:
y2-y1/x2-x1
5-3 = 2
5-4=1
2
The sum of three consecutive integers is 42. Which of the equations could represent this relationship? Select the two correct answers. x + (x + 1) + (x + 2) = 42 x + (x + 2) + (x + 4) = 42 (x minus 1) + x + (x + 1) = 42 (x minus 2) + x + (x + 2) = 42 x + 2 x + 3 x = 42
There are two ways to represent this equation: "x + (x + 1) + (x + 2) = 42" and "(x minus 1) + x + (x + 1) = 42".
What is equation?The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. A mathematical phrase with two equal sides and an equal sign is called an equation. An example of an equation is 4 + 6 = 10.
Here,
There are 2 ways,
x+(x+1)+(x+2)=42
(x-1)+x+(x+1)=42
This equation can be written as "x + (x + 1) + (x + 2) = 42" or "(x minus 1) + x + (x + 1) = 42," respectively.
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Find the z-value that corresponds to each percentile for a standard normal distribution. a) 10th percentile b) 50th percentile c) 70th percentile Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. a) The z-value that corresponds to the 10th percentile is Definition . X . X i Definition b) The z-value that corresponds to the 50th percentile is c) The z-value that corresponds to the 70th percentile is Z z Entries in the table represent area under the curve between 2 = 0 and a positive v curve, area under the curve between 2 = 0 and a negative value of z are found in Area = Probability 0.00 0.01 0.02 0.03 0.04 = P(OS X sz) 0.0 .0000 .0040 .0080 .0120 .0160 1 0.1 .0398 .0438 .0478 .0517 .0557 .0793 .0832 .0871 Jo V2T .0910 .0948 0.3 .1179 .1217 .1255 .1293 .1331 0.4 .1554 .1591 .1628 .1664 .1700 2 Entries in the table represent area under the curve between z = 0 and a positive v curve, area under the curve between 2 = 0 and a negative value of z are found in Area = Probability 0.00 0.01 0.02 0.03 0.04 = P(0 = x= z) 1.5 .4332 .4345 .4357 .4370 .4382 1.6 .4452 .4463 .4474 .4484 .4495 V27 1.7 .4554 .4564 .4573 .4582 .4591 1.8 .4641 .4649 .4656 .4664 .4671 1.9 .4713 .4719 .4726 .4732 .4738 = =" e */2 dx 0.2 = I Tan -2/2 dx € 0.5 .1915 2257 .2580 .2881 3159 0.6 0.7 0.8 0.9 02 .1950 .2291 .2611 .2910 3186 .1985 .2324 .2642 2939 3212 .2019 .2357 .2673 .2967 3238 .2054 .2389 .2704 2995 3264 02 2.0 2.1 2.2 2.3 2.4 .4772 .4821 -4861 .4893 .4918 4778 .4826 .4864 .4896 .4920 4783 .4830 .4868 .4898 4922 .4788 .4834 .4871 .4901 .4925 .4793 .4838 .4875 .4904 .4927 1.0 1.1 1.2 1.3 1.4 .3413 3643 3849 .4032 .4192 3438 3665 3869 .4049 4207 .3461 .3686 .3888 4066 4222 .3485 3708 3907 .4082 .4236 .3508 3729 3925 .4099 .4251 2.5 2.6 2.7 2.8 2.9 3.0 .4938 .4953 .4965 4974 .4981 .4987 .4940 .4955 .4966 4975 .4982 .4987 4941 .4956 .4967 4976 .4982 .4987 4943 .4957 .4968 .4977 4983 .4988 .4945 .4959 .4969 .4977 .4984 .4988 > > Print Done Print Done
The z-values that correspond to each percentile are:
a) 10th percentile: -1.28
b) 50th percentile: 0
c) 70th percentile: 0.52
To find the z-value that corresponds to each percentile for a standard normal distribution, we can use the standard normal distribution table. Let's calculate the z-values for the given percentiles:
a) 10th percentile:
From the table, we find that the closest value to the 10th percentile is 0.1003. The corresponding z-value for this percentile is approximately -1.28.
b) 50th percentile:
The 50th percentile corresponds to the median of the standard normal distribution, which is 0. The z-value for the 50th percentile is 0.
c) 70th percentile:
From the table, we find that the closest value to the 70th percentile is 0.5244. The corresponding z-value for this percentile is approximately 0.52.
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PLEASE HELP THANK YOU
How is the graph of y = (x + 1)^2- 5 transformed from the graph of y=x^2?
\(\text{Hi there! :D}\)
\(\boxed{\text{There is a horizontal shift of 1 unit left and 5 units down.}}\)
\(\text{Recall that the transformations form of a quadratic function is:}\\\\y = \pm a(b(x-h))+k \text{ where:}\\\\a = \text{ vertical stretch/compression}\\\\b = \text{ horizontal stretch/compression}\\\\h = \text{ shift left/right}\\\\k = \text{ shift up/down}\\\\\text{Therefore, in this instance:}\\\\h = -1\\\\k = -5, \text{ so:}\\\\\text{There is a horizontal shift of 1 unit left and 5 units down.}\)
A graph shows the preimage and image of a shape that has undergone one transformation. If the preimage and image are not congruent what transformation was applied?
A. reflection
B. rotation
C. dilation
D. translation
Answer:
C. dialtion
Step-by-step explanation:
A dialtion either reduces or enlarges the dimensions of a shape, causing for them to no longer be congruent.
A reflection wouldn't change the congruency of the shape since it is just reflecting it across whatever axis. The dimensions stay the same.
A rotation would simply rotate/turn the shape. The dimensions would not be changed.
A translation would slide the shape elsewhere whether it be vertically, horizontally, or diagonally. The dimensions would not change.
Therefore, we can conclude that option C makes the most sense.
hope this helps!
Given the function f : x → 5 – 2 x, evaluate the following. F(1)
Answer:
3 is the correct answer hope it helps
Please tell me the answer ASAP
\( 12\div 3.36\)
When testing for NULL values to find Customers who have no Orders, which column is best to include in the WHERE clause below: WHERE __________ IS NULL
When testing for NULL values to find Customers who have no Orders, which column is best to include in the WHERE clause below:
WHERE __________ IS NULL
The primary key from the Orders table
The correct answer to the question is (b) IS NOT NULL. This operator is used in SQL queries to find the rows that have a value in the specified column, i.e., the rows that are not null.
A null value represents an unknown or missing value, and it can be assigned to a column when there is no data available for that attribute. In SQL, null values are not equivalent to zero or an empty string, and they cannot be compared using the regular comparison operators. Hence, the IS NOT NULL operator is used to filter out the rows that have a valid value in the specified column. For example, if we have a table of employees with columns such as employee_id, first_name, last_name, and department_name, we can use the IS NOT NULL operator to find the employees who have a valid department_name assigned to them. The query would be:
SELECT employee_id, first_name, last_name
FROM employees
WHERE department_name IS NOT NULL;
This query would return all the rows from the employees table where the department_name column is not null, i.e., the employees who have a department assigned to them. In summary, the IS NOT NULL operator is used to filter out null values from a column and retrieve the rows that have valid data.
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A groundskeeper needs
grass seed to cover a circular field, 290 feet in diameter.
A store sells 50-pound bags of grass seed.
One pound of grass seed covers about 400 square feet
of field
What is the smallest number of bags the groundskeeper must buy to cover the circular field?
Explain or show your reasoning
The smallest number of bags the groundskeeper must buy to cover the field is 165 bags.
What is Area of a circle?Area of a circle is the region occupied by the circle in a two-dimensional plane. It can be determined easily using a formula, A = πr²
A groundskeeper needs grass seed to cover a circular field, 290 feet in diameter. A store sells 50 pound bags of grass seed. One pound of grass seed covers about 400 square feet of field.
The smallest number of bags the groundskeeper must buy to cover the field.
Diameter of the field = 290 feet
Radius = 145 feet
Area of the circular field = πr²
= 3.14 ×145²
= 66018.5ft²
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Which of the below is/are equivalent to the statement that a set of vectors (v1...., vp) is linearly independent? Suppose also that A = [V1 V2 ... Vp). A. A linear combination of vi, ..., vp is the zero vector if and only if all weights in the combination are zero. B. The vector equation xıvı + X2V2 + ... + XpVp = 0 has only the trivial solution. C. There are weights, not all zero, that make the linear combination of vi. Vp the zero vector. D. The system with augmented matrix [A 0] has freuwariables. E The matrix equation Ax = 0 has only the trivial solution. F. All columns of the matrix A are pivot columns.
The statements that are equivalent to the statement that a set of vectors (v1, ..., vp) is linearly independent are:
A. A linear combination of vi, ..., vp is the zero vector if and only if all weights in the combination are zero.
B. The vector equation x₁v₁ + x₂v₂ + ... + xₚvₚ = 0 has only the trivial solution.
F. All columns of the matrix A are pivot columns.
Let's examine each option to see why they are equivalent:
A. A linear combination of vi, ..., vp is the zero vector if and only if all weights in the combination are zero.
This statement is equivalent to linear independence because it states that the only way for the linear combination of the vectors to equal the zero vector is if all the weights are zero. In other words, there are no nontrivial solutions to the equation c₁v₁ + c₂v₂ + ... + cₚvₚ = 0, where c₁, c₂, ..., cₚ are the weights.
B. The vector equation x₁v₁ + x₂v₂ + ... + xₚvₚ = 0 has only the trivial solution.
This statement is also equivalent to linear independence because it states that the only solution to the equation is the trivial solution where all the variables x₁, x₂, ..., xₚ are zero. In other words, there are no nontrivial solutions to the homogeneous system of equations represented by the vector equation.
F. All columns of the matrix A are pivot columns.
This statement is equivalent to linear independence because it implies that every column of the matrix A is a pivot column, meaning that there are no free variables in the corresponding system of equations. This, in turn, implies that the only solution to the homogeneous system Ax = 0 is the trivial solution, making the set of vectors linearly independent.
The other options (C and E) are not equivalent to the statement that a set of vectors is linearly independent:
C. There are weights, not all zero, that make the linear combination of vi, ..., vp the zero vector.
This statement describes linear dependence rather than linear independence. If there are non-zero weights that result in the linear combination of the vectors equaling the zero vector, it means that the vectors are linearly dependent.
E. The matrix equation Ax = 0 has only the trivial solution.
This statement is related to the linear dependence of the columns of the matrix A rather than the linear independence of the vectors (v1, ..., vp). It refers to the homogeneous system of equations represented by the matrix equation and states that the only solution is the trivial solution, implying that the columns of A are linearly independent. However, it does not directly correspond to the linear independence of the original set of vectors.
In summary, the statements A, B, and F are equivalent to the statement that a set of vectors (v1, ..., vp) is linearly independent.
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What is 6 divided by 2 (1+2)
Answer: 9
Step-by-step explanation:
6 / 2 ( 1+2)
We divided first
3 ( 1 +2)
Then we do the 1+2 second because they have ( )
3 (3)
Then we times them and get 9
Please help me I really can’t figure this out
Answer:
can you upload a bigger picture
Graph y ≥ -x2 - 1.
Click on the graph until the correct graph appears.
Answer:
To graph this inequality, you can start by graphing the related function y = -x^2 - 1. This is a downward-facing parabola that opens downwards and has a vertex at (0, -1).
To graph the inequality y ≥ -x^2 - 1, you need to shade the region above the graph of the parabola. This is because any point above the parabola will have a y-coordinate that is greater than or equal to the corresponding y-coordinate on the parabola.
So, to graph the inequality, you can shade the region above the parabola. You can use a dotted line to represent the boundary of the inequality, since the inequality includes the possibility of equality (y = -x^2 - 1).
I hope this helps!
Your friend loans you $20,000 for school. In five years he wants
$40,000 back. What is the interest rate he is charging you?
Remember to show your work.
The interest rate your friend is charging you for the $20,000 loan is 20% per year.
What is the interest rate on the loan?
The simple interest is expressed as;
A = P( 1 + rt )
Where A is accrued amount, P is principal, r is the interest rate and t is time.
Given that;
The Principal P = $20,000
Accrued amount A = $40,000
Elapsed time t = 5 years
Interest rate r =?
Plug these values into the above formula and solve for the interest rate r:
\(A = P( 1 + rt )\\\\r = \frac{1}{t}( \frac{A}{P} -1 ) \\\\r = \frac{1}{5}( \frac{40000}{20000} -1 ) \\\\r = \frac{1}{5}( 2 -1 ) \\\\r = \frac{1}{5}\\\\r = 0.2 \\\\\)
Converting r decimal to R a percentage
Rate R = 0.2 × 100%
Rate r = 20% per year
Therefore, the interest rate is 20% per year.
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write the number positioned at point A
The number positioned at point A is -4.25.
What is a number line?A number line can be defined as a type of graph with a graduated straight line which contains both positive and negative numbers (numerical values) that are placed at equal intervals along its length.
This ultimately implies that, a number line can be used to compare two numbers such as 4 and 1. Also, a number line typically increases in numerical value towards the right and decreases in numerical value towards the left.
In this scenario, the given number line uses a scale of 1:0.25. Therefore, the number (numerical value) that is placed at point A is given by:
Point A = -4.5 - 0.25
Point A = -4.25.
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Write an equation in point-slope form with a slope of m=3 and passes through the point (4,-5).
Answer:
y+5=3(x-4)
Step-by-step explanation:
hope this helped :)
The following system of periodic tasks are to be scheduled and executed according to structured cyclic schedule with fixed frame size. (5, 1), (7, 1), (12,0) and (45,9). Determine the appropriate frame size for the given task set?
The appropriate frame size for the given task set is 140.
The frame size is the length of a time interval in which all the tasks in the system are scheduled to be executed. The frame size must be a multiple of the period of each task in the system.
In this case, the periods of the tasks are 5, 7, 12, and 45. The smallest common multiple of these periods is 140. Therefore, the appropriate frame size for the given task set is 140.
Here is a more detailed explanation of the calculation of the frame size:
The first step is to find the least common multiple of the periods of the tasks. The least common multiple of 5, 7, 12, and 45 is 140.
The second step is to check if the least common multiple is also a multiple of the execution time of each task. The execution time of each task is equal to its period in this case. Therefore, the least common multiple is also a multiple of the execution time of each task.
Therefore, the appropriate frame size for the given task set is 140.
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