Answer:
Step-by-step explanation:
x/10 + 8 = x/2
10 could be a convenient common denominator
x/10 + 80/10 = 5x/10
x + 80 = 5x
80 = 4x
x = 20 gallons.
Answer: Answer:
25 gallons.
Step-by-step explanation:
The container that holds the water for the football team is 1/2 full.
After pouring out 5 gallons of water, it is 3/10 full.
The proportion that was poured out is - = =
of the water in the container is equal to 5 gallons
The container therefore holds: 1 × 5 ÷ = 5 × 5 = 25 gallons.
Step-by-step explanation:
ALGEBRA AND GEOMETRY REVIEWFactoring a quadratic with a negative leadFactor completely.- 4y2 - 32y +80Х
Factoring polynomials is a matter of making educated guesses. In some cases the educated guesses come easily in others it is not so easy a task.
For our polynomial, let us first factor out 4. Doing this gets is
\(-4(y^2+8y-20)\)And now we take a guess at the factors of the polynomial in the parenthesis.
Now remember that,
\((y+a)(y+b)=y^2+(a+b)y+ab\)Comparing this with our polynomial suggests
\(a+b=8\)\(ab=-20\)meaning the sum of a and b is 8 and the product is -20. What two numbers could satisfy this condition?
Let us take a guess at a = 10 b = -2. This will give
\(-4\textcolor{#FF7968}{\lbrack}(y+10)(y-2)\textcolor{#FF7968}{\rbrack}\)Let us see if this guess works by expanding what is in the square brackets.
\(\textcolor{#FF7968}{(y+10)(y-2)}=y(y-2)+10(y-2)=y^2-2y+10y-20\)\(=\textcolor{#FF7968}{y^2+8y-20}\)which is exactly the same!
Hence, the factorization of - 4y2 - 32y + 80 is
\(-4(y+10)(y-2)\text{.}\)Mike wants to fence in part of his backyard. He wants the length of the fenced-in area to be at least 20 feet long, l ≥ 20. He has 200 feet of fencing. The inequality that models the possible perimeter of the yard is 2l + 2w ≤ 200.
Answers:
w = 10 ft and l = 50 ft ................> second option
w = 20 ft and l = 60 ft ...............> third option
w = 50 ft and l = 40 ft ...............> fifth option
Explanation:
We are given that:
length should be at least 20 ...........> length ≥ 20
equation for perimeter is : 2l + 2w ≤ 200
We will check each option as follows:
Option 1:
w = 50 ft and l = 10 ft
This option is incorrect as the proposed length is less than 20.
Option 2:
w = 10 ft and l = 50 ft
Since the length is greater than 20, the first condition is satisfied.
Now, we check the second condition:
2l + 2w = 2(50) + 2(10) = 100 + 20 = 120 ≤ 200
The second condition is also satisfied.
This option is correct
Option 3:
w = 20 ft and l = 60 ft
Since the length is greater than 20, the first condition is satisfied.
Now, we check the second condition:
2l + 2w = 2(60) + 2(20) = 120 + 40 = 160 ≤ 200
The second condition is also satisfied.
This option is correct
Option 4:
w = 90 ft and l = 30 ft
Since the length is greater than 20, the first condition is satisfied.
Now, we check the second condition:
2l + 2w = 2(30) + 2(90) = 60 + 180 = 240 > 200
The second condition is not satisfied.
This option is incorrect
Option 5:
w = 50 ft and l = 40 ft
Since the length is greater than 20, the first condition is satisfied.
Now, we check the second condition:
2l + 2w = 2(50) + 2(40) = 100 + 80 = 180 ≤ 200
The second condition is also satisfied.
This option is correct
Jamie borrow 2,000 to purchase new living room furniture.she will pay an 8% interest rate over 2 years.how much will she pay in interest
Answer:
Jamie would pay an extra $332.80
Step-by-step explanation:
URGENT *EASY 10 POINTS* : Show steps to get the expression ln(sqrt(2) +1) - ln(1/sqrt(2)) equal to -ln(1-(1/sqrt2))
Answer:
Step-by-step explanation:
To show that the expression \(\ln(\sqrt{2} + 1) - \ln\left(\frac{1}{\sqrt{2}}\right)\) is equal to \(-\ln\left(1 - \frac{1}{\sqrt{2}}\right)\), we can simplify both sides of the equation using the properties of logarithms. Here are the steps:
Step 1: Simplify the expression on the left side:
\(\ln(\sqrt{2} + 1) - \ln\left(\frac{1}{\sqrt{2}}\right)\)
Step 2: Apply the logarithmic property \(\ln(a) - \ln(b) = \ln\left(\frac{a}{b}\right)\) to combine the logarithms:
\(\ln\left(\frac{\sqrt{2} + 1}{\frac{1}{\sqrt{2}}}\right)\)
Step 3: Simplify the expression within the logarithm:
\(\ln\left(\frac{(\sqrt{2} + 1)}{\left(\frac{1}{\sqrt{2}}\right)}\right)\)
Step 4: Simplify the denominator by multiplying by the reciprocal:
\(\ln\left(\frac{(\sqrt{2} + 1)}{\left(\frac{1}{\sqrt{2}}\right)} \cdot \sqrt{2}\right)\)
\(\ln\left(\frac{(\sqrt{2} + 1) \cdot \sqrt{2}}{\left(\frac{1}{\sqrt{2}}\right) \cdot \sqrt{2}}\right)\)
\(\ln\left(\frac{(\sqrt{2} + 1) \cdot \sqrt{2}}{1}\right)\)
Step 5: Simplify the numerator:
\(\ln\left(\frac{(\sqrt{2} + 1) \cdot \sqrt{2}}{1}\right)\)
\(\ln\left(\sqrt{2}(\sqrt{2} + 1)\right)\)
\(\ln\left(2 + \sqrt{2}\right)\)
Now, let's simplify the right side of the equation:
Step 1: Simplify the expression on the right side:
\(-\ln\left(1 - \frac{1}{\sqrt{2}}\right)\)
Step 2: Simplify the expression within the logarithm:
\(-\ln\left(\frac{\sqrt{2} - 1}{\sqrt{2}}\right)\)
Step 3: Apply the logarithmic property \(\ln\left(\frac{a}{b}\right) = -\ln\left(\frac{b}{a}\right)\) to switch the numerator and denominator:
\(-\ln\left(\frac{\sqrt{2}}{\sqrt{2} - 1}\right)\)
Step 4: Simplify the expression:
\(-\ln\left(\frac{\sqrt{2}}{\sqrt{2} - 1}\right)\)
\(-\ln\left(\frac{\sqrt{2}(\sqrt{2} + 1)}{1}\right)\)
\(-\ln\left(2 + \sqrt{2}\right)\)
As we can see, the expression \(\ln(\sqrt{2} + 1) - \ln\left(\frac{1}{\sqrt{2}}\right)\) simplifies to \(\ln(2 + \sqrt{2})\), which is equal to \(-\ln\left(1 - \frac{1}{\sqrt{2}}\right)\).
At May 31,2020, the accounts of Lopez Company shows the following
Answer:
Thats cool :)
A student has scores of 56.25, 57.5, and 62 on his first three tests. He needs an average of at least60 to earn a grade of D. What is the minimum score that the student needs on the fourth test toensure a D?Note: The answer need not be an integer.
From the information provided, the student has achieved three of the required scores and the fourth when added would be used to calculate an average of 60. To calculate the average, the student would use the following approach;
\(\text{Average}=\frac{\text{Sum of all scores}}{Number\text{ of tests}}\)We shall take the unknown test to be x (that is, the fourth test), and then we would have;
\(\begin{gathered} \text{Average}=\frac{56.25+57.5+62+x}{4} \\ Note\text{ that the average score should be at least 60.} \\ Therefore; \\ \frac{56.25+57.5+62+x}{4}\ge60 \\ \frac{175.75+x}{4}\ge60 \\ \text{Cross multiply and you'll have;} \\ 175.75+x\ge60\times4 \\ 175.75+x\ge240 \\ \text{Subtract 175.75 from both sides;} \\ x\ge64.25 \end{gathered}\)ANSWER:
The minimum score on the fourth test would be at least 64.25 to obtain a grade of D
The side of a triangle are in the ratio 4:4:3 what kind of triangle is it (b) calculate the smallest angle of the triangle to the nearest degree
The smallest angle of the equilateral triangle is 60 degrees
If the sides of a triangle are in the ratio 4:4:3, it implies that the lengths of the sides are proportional.
To determine the type of triangle, we examine the side lengths. Since all three sides are equal in length, we have an equilateral triangle.
For an equilateral triangle, all angles are equal. To calculate the smallest angle, we divide the total sum of angles in a triangle (180 degrees) by the number of angles, which is 3:
Smallest angle \(= \frac{180}{3} = 60\)\) degrees.
Therefore, the smallest angle of the equilateral triangle is 60 degrees (to the nearest degree).
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Find the smallest whole number by which 16087 should be multiplied or divided to get a perfect square
There is no whole number by which you can multiply or divide 16087 to make it a perfect square.
To determine by which number you should multiply or divide 16087 to make it a perfect square, we can analyze its prime factorization. The prime factorization of 16087 is 13 × 1237.
In order to make 16087 a perfect square, we need each prime factor to have an even exponent. However, when we examine the prime factors of 16087, we find that both 13 and 1237 have an exponent of 1.
To make the exponents even, we need to multiply or divide 16087 by additional prime factors and their respective exponents. However, since 16087 is a product of two prime numbers (13 and 1237), we cannot introduce any additional prime factors to make the exponents even.
A perfect square is a number that can be expressed as the product of two equal factors. In the case of 16087, it cannot be transformed into a perfect square by multiplying or dividing by any whole number. The prime factors 13 and 1237 remain with an exponent of 1 each, indicating that there is no integer that can be applied to make them equal and convert 16087 into a perfect square.
Therefore, there is no whole number by which you can multiply or divide 16087 to make it a perfect square.
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Let f(x)= x^2 -5x+4 and g(x)=2^x-3
Answer:
Plug g(x) into all the x values in your f(x) and the answer is 3 because it makes the denominator 1-1 which makes it 0 and is thus discontinuous
Step-by-step explanation:
The length of the base of an isosceles triangle is x. The length of a leg is 4x−6. The perimeter of the triangle is 42. Find x
Answer:
x = 6
Step-by-step explanation:
x + 2(4x-6) = 42
x + 8x - 12 = 42
9x = 42 + 12
9x = 54
9/9 x = 54/9
x = 6
rewrite the expression without absolute value bars
The expression without absolute value bars is 3.84.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
|√10 - 7 |
= | 3.16 - 7 |
= | -3.84 |
= 3.84
Thus,
The value of the expression is 3.84.
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When an individual inherits two identical alleles for the brown eyed gene (BB)which type of individual is this?
The volume of water in a vase is proportional to the depth
of the water. When there are 63 mL of water in the vase,
the depth is 7 cm. How much water is in the vase when
the depth is 9 cm?
A: 49 mL
B: 810 mL
C: 108 mL
D: 81 mL
Step-by-step explanation:
\(\frac{63}{7}=\frac{l}{9}\)
\(l=81\text{ ml}\)
Answer:
D
Step-by-step explanation:
We are given that the volume of water in a vase is proportional to the depth of the water. In other words, we can write that:
\(\displaystyle V = kd\)
Where V is the volume, d is the depth of the water, and k is the constant of proportionality.
When there are 63 mL of water in the vase, the depth is 7 cm. Hence, V = 63 when d = 7:
\(\displaystyle (63) = k(7)\)
Solve for k:
\(\displaystyle k = \frac{63}{7} = 9\)
Hence, our equation is:
\(V = 9d\)
Then when the depth of the vase is 9 cm:
\(\displaystyle V = 9(9) = 81\text{ mL}\)
There will be 81 mL of water in the vase.
Hence, our answer is D.
Which table represents only values described by the relationship between t and w?
w = t + 11.2
The table of w = t + 11.2 is:
t w
0 11.2
1 12.2
2 13.2
3 14.2
4 15.2
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
w = t + 11.2
The table can be calculated as,
When t = 1, w = 1 + 11.2 = 12.2
When t = 2, w = 2 + 11.2 = 13.2
When t = 3, w = 3 + 11.2 = 14.2
When t = 4, w = 15.2
So on..
Thus,
t w
0 11.2
1 12.2
2 13.2
3 14.2
4 15.2
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Do you guys know this.
Answer:
0.77
Step-by-step explanation:
You solve the inner first, then move to the outer.
Plug in x = 20 for g(x) = \(\frac{2x+2}{x-6}\). It should give you \(\frac{42}{14}\), which simplifies to 3.
You then need to solve f(x) with the given value from g(x), which is 3.
Plug in x = 3 for the equation \(\sqrt{0.4x^2-x}\), and you should get \(\sqrt{0.6}\).
The answer is roughly 0.77.
Please solve this
∫ (log(1 + x ^ 2))/((x + 1) ^ 2) dx
The final result of the integral is:
∫ (log(1 + x²) / (x + 1)²) dx = log(x + 1) - 2 (log(x + 1) / x) - 2Li(x) + C,
where Li(x) is the logarithmic integral function and C is the constant of integration.
We have,
To solve the integral ∫ (log(1 + x²) / (x + 1)²) dx, we can use the method of substitution.
Let's substitute u = x + 1, which implies du = dx. Making this substitution, the integral becomes:
∫ (log(1 + (u-1)²) / u²) du.
Expanding the numerator, we have:
∫ (log(1 + u² - 2u + 1) / u²) du
= ∫ (log(u² - 2u + 2) / u²) du.
Now, let's split the logarithm using the properties of logarithms:
∫ (log(u² - 2u + 2) - log(u²)) / u² du
= ∫ (log(u² - 2u + 2) / u²) du - ∫ (log(u²) / u²) du.
We can simplify the second integral:
∫ (log(u²) / u²) du = ∫ (2 log(u) / u²) du.
Using the power rule for integration, we can integrate both terms:
∫ (log(u² - 2u + 2) / u²) du = log(u² - 2u + 2) / u - 2 ∫ (log(u) / u³) du.
Now, let's focus on the second integral:
∫ (log(u) / u³) du.
This integral does not have a simple closed-form solution in terms of elementary functions.
It can be expressed in terms of a special function called the logarithmic integral, denoted as Li(x).
Therefore,
The final result of the integral is:
∫ (log(1 + x²) / (x + 1)²) dx = log(x + 1) - 2 (log(x + 1) / x) - 2Li(x) + C,
where Li(x) is the logarithmic integral function and C is the constant of integration.
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Which of the lines is most likely of best fit for the data provided?
Inputs: People at concession stand Outputs: Cost of their order
this relation a function?
it a constant function?
it a 1-1 function?
People at the concession stand as input Cost of their order's output.
(1) The relation in question is a function.
(II) This function is not constant. (Each category of concession has a different order cost.)
Not a 1-1 function (iii). (Several persons arrived seeking the same sort of concession. So they all pay the same price for their order.)
A function describes the relationship between patrons' inputs at the concession stand and the cost of their order as an output. A function is a relationship between a set of possible inputs and outputs, where each input is associated to exactly one output.
The quantity of patrons at the concession stand serves as the input in this scenario, while the cost of their order serves as the output.
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what is answer to this question please help
Answer:
5 > \(\sqrt{18\)
Step-by-step explanation:
The square root of 18 is approximately 4.24.
5 is greater than 4.24, so we can use the inequality sign >.
is (0,5) a solution of y = -3x - 5
Answer:
Yes
Step-by-step explanation:
Insert (0,5) to the problem.
-5 = -3(0) - 5
0 - 5
-5 = -5
Is 413.25 a whole number
Answer:
No
Step-by-step explanation:
Whole numbers do not have decimals
If you bike for 2 hours at a constant speed of 12 mph, you’ll travel __ miles
NO LINKS, PLZ JUST TELL ME
Answer:
24 miles....you travel 24 miles per hour
Step-by-step explanation:
you multiply your mph by the amount of hours to get the answer
Does this table represent a function? Why or why not?
O
X
2
3
3
4
5
y
1
4
3
2
5
A. Yes, because there are different y-values.
B. Yes, because every x-value corresponds to exactly one y-value.
C.
No, because the y-values are positive.
D. No, because one x-value corresponds to two different y-values.
SUBMIT
The given table does not represent a function. The correct answer is D. No, because one x-value corresponds to two different y-values.
To determine if the table represents a function, we need to check if every x-value corresponds to exactly one y-value. Let's analyze the given table:
x | y
-------
O | 1
X | 4
2 | 3
3 | 2
3 | 5
4 |
5 |
From the table, we can see that the x-values are not unique. Both the values 3 and 4 appear twice in the x-column, but they have different corresponding y-values.
This violates the definition of a function, which states that each input (x-value) should have only one output (y-value).
Therefore, the given table does not represent a function.
The correct answer is D. No, because one x-value corresponds to two different y-values.
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Kendra is buying a Nintendo Switch with a price tag of $300. The sales tax rate where Kendra is purchasing the
Switch is 9.5%. How much will Kendra pay altogether for the Switch?
Answer: So for the 9.5% percent I'm not sure if you mean by 9.5% off the price or more for the price so Ill just do both
If you subtract $300 from 9.5% you get 271.5 US$
But if you add $300 to 9.5% you get 328.5 US$
Help please geometry
The area of the shaded region = 30.903 in²
From the attached figure we can observe that the radius of the circle R is r = 6 in.
Using the forula for the area of circle, the area of circle R would be,
A₁ = πr²
A₁ = π × 6²
A₁ = 36π
A₁ = 113.097 in²
So, the diameter would be d = 6 × 2 = 12 in.
The circle R is inscribed in a square.
So, the side length of square is equal to the diameter of the circle.
This means the side length 'a' os square = 12 in.
Using the formula of the area of square,
A₂ = side²
A₂ = a²
A₂ = 12²
A₂ = 144 in²
so, the area of the shaded region would be,
A = A₂ - A₁
A = 144 -113.097
A = 30.903 in²
This is the required area.
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Calista was told that she had an average grade of an 82, but not told what she got on her 6th assignment. Calista knows that she got a 62, 88, 92, 74 and 78 on the other 5 assignments.
What was Calista's grade on her last assignment?
Calista's grade on her last assignment is 98.
To determine Calista's grade on her last assignment, we can calculate the average grade using the given information.
The sum of Calista's grades on the first five assignments is: 62 + 88 + 92 + 74 + 78 = 394.
Since the average grade is given as 82, we can find the total sum of all six assignments by multiplying the average grade by the number of assignments, which is 6: 82 * 6 = 492.
To find Calista's grade on her last assignment, we subtract the sum of her grades on the first five assignments from the total sum: 492 - 394 = 98.
To determine Calista's grade on her last assignment, we can calculate the average grade using the given information.
The sum of Calista's grades on the first five assignments is: 62 + 88 + 92 + 74 + 78 = 394.
Since the average grade is given as 82, we can find the total sum of all six assignments by multiplying the average grade by the number of assignments, which is 6: 82 * 6 = 492.
To find Calista's grade on her last assignment, we subtract the sum of her grades on the first five assignments from the total sum: 492 - 394 = 98.
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Jemma and Debra work as consults. They both get hired for jobs. Jemma charges a fee of $5 plus an additional $22 per hour. Debra charges $20 per hour. Write an expression that
Answer:
Jemma: 22x + 5
Debra: 20x
Step-by-step explanation:
Classify each triangle by its side lengths
ACD
ABC
ABD
Answer:
✔️∆ACD is a scalene triangle
✔️∆ABC is an isosceles triangle
✔️∆ABD is a scalene triangle
Step-by-step explanation:
✔️All three sides of ∆ACD are of different lengths, therefore, judging by side lengths, ∆ACD is a scalene triangle.
✔️∆ABC has two equal side lengths, AC and BC. ∆ABC is an isosceles triangle because isosceles triangles have two equal sides.
✔️BC = AC
AC² = 5² - 3² (pythagorean theorem)
AC² = 25 - 9 = 16
AC = √16 = 4
Therefore, BC = 4
In ∆ABD,
BD = 4 + 3 = 7
AD = 5
AB = 5.7
All three sides are unequal, therefore ∆ABD is a scalene triangle.
What is the solution to x + 23 =90?
Answer:
67+23=90
Step-by-step explanation:
write and solve an inequality to find the possible values of x
The inequality that represents the value of x is (b) x > 80
Writing and solving the inequality for xfrom the question, we have the following parameters that can be used in our computation:
The figure
The general rule is that
The larger the side length, the larger the angle opposite it
using the above as a guide, we have the following:
1/8x > 10
So, we have
x > 80
Hence, the inequality is x > 80
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