Answer:
975
Step-by-step explanation:
The reverse operation of addition is subtraction
1465 - 490 = 975
Does anyone have the answer key to "Understand Systems of Linear Equations I-ready level H instruction?"
Answer:
no bro, sorry. even though I needed to I don't have it
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Sara has x dollars and Dina has 15 dollars less than Sara . Together the number
of dollars they have is?
Answer:
2x-15
Step-by-step explanation:
Sara has x dollars
dina has 15 less which is
x-15
together it will be
x+x-15
=2x-15
In July, the average temperature in one US city was 29°C. By December, the average temperature had fallen by 29°C. Explain why the average temperature in December was 0°C.
Answer:
Down Below :))
Step-by-step explanation:
This is quite simple.
Take a look at both of the numbers, see how their both 29?
Subtracting 29 - 29 = 0
Explanation: The average temperature was 0 because when subtracting 29 - 29, it gives you 0.
The temperature went up 29°C, which represents a positive 29. Then the temperature fell 29°C, which represents a negative 29. The average temperature rose and fell the same amount. The absolute values are the same, so the difference is 0.
IamSugarBee
The approximate weights of the two animals are 5.12 x 102 lbs. and 6.8 x 102 lbs. Find the total weight of the two animals. Write the final answer in scientific notation with the correct number of significant digits. Can you please help me and stop deleting my question :(
these are the answers
1.2 x 103 lbs.
1.19 x 103 lbs.
11 x 102 lbs.
5.8 x 102 lb
Answer: Option A is the correct answer
Step-by-step explanation: I took the test and got it right
The total weight of the two animals is 1.19 x 10³ lbs. So the correct option is B.
Given approximate weights of the two animals are as:
1. 5.12 x 10² lbs
2. 6.8 x 10² lbs
We need to find the total weight of the two animals.
Step 1: Add the weights together:
5.12 x 10² lbs + 6.8 x 10² lbs
Step 2: Perform the addition:
(5.12 + 6.8) x 10² lbs
11.92 x 10² lbs
Step 3: Express the result in scientific notation with the correct number of significant digits:
The first number, 11.92, has three significant digits. To maintain three significant digits in the final answer, we can express it as 11.9 (rounding to the nearest tenth) and adjust the exponent accordingly:
11.9 x 10² lbs
This matches option 2 from your provided answers:
2. 1.19 x 10³ lbs.
So, the correct answer is: 1.19 x 10³ lbs.
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x-2y=3, x^2-2y=3, x^2-2xy+4y^2=11, find the value of x^2y-2xy^2
This is a system of three equations with two unknowns, x and y. To solve it, we can use the method of elimination. First, we can eliminate y by subtracting the first equation from the second equation:
x^2-2y=3 - (x-2y=3) => x^2-x=0
Then we can factor the resulting equation and find the values of x:
x^2-x=0 => x(x-1)=0 => x=0 or x=1
Next, we can substitute these values of x into any of the original equations and find the corresponding values of y. For example, using the first equation:
x-2y=3 => 0-2y=3 => y=-3/2 when x=0 x-2y=3 => 1-2y=3 => y=-1 when x=1
Finally, we can substitute these values of x and y into the expression x2y-2xy2 and evaluate it:
x2y-2xy2 => 02(-3/2)-2(0)(-3/2)2 => 0 when x=0 and y=-3/2 x2y-2xy2 => 12(-1)-2(1)(-1)2 => -3 when x=1 and y=-1
Therefore, the value of x2y-2xy2 can be either 0 or -3 depending on the values of x and y.
work out and simplify where possible 7/8 x 10
Answer:
35x/4
Step-by-step explanation:
Answer:
35 / 4 ( in fraction ) or 8.75 ( in decimal )
Step-by-step explanation:
7/8 x 10
= ( 7 x 10 ) / 8
= 70 / 8
= 35 / 4
( or )
= 8.75
how many liters of water does a pipe with a diameter of 10cm left out, if water flows at the rate of 1.5m / sec and 3 minutes have passed?
Step-by-step explanation:
To find out how many liters of water flows through a pipe with a diameter of 10 cm when water flows at the rate of 1.5 m/s and 3 minutes have passed, you need to follow the steps below:
Step 1: Find the area of the pipe.
Area = πr² = π(5cm)² = 78.54 cm².Step 2: Convert the flow rate into cm³/s.
Flow rate = 1.5 m/s = 150 cm/s
Volume = Area × velocity = 78.54 × 150 = 11781 cm³/s.Step 3: Find the volume of water that flows through the pipe in 3 minutes.
Time = 3 minutes = 180 seconds
Volume = Flow rate × time = 11781 × 180 = 2,120,580 cm³.Step 4: Convert the volume into liters.
1 liter = 1000 cm³
Volume in liters = 2,120,580 cm³ ÷ 1000 = 2120.58 liters.Therefore, approximately 2120.58 liters of water flow through the pipe with a diameter of 10 cm when water flows at the rate of 1.5 m/s and 3 minutes have passed.
You pick a card at random. 6 7 8 9 What is P(divisor of 70)? Write your answer as a percentage. %
Answer:
Step-by-step explanation:
Help me please il give 20 points!
Answer: 1. a. 15 b. 11 c. 2 d. 7 e. 5.5
2. Stem: Leaf:
1 9
2 5, 9
3 3, 3, 8
4 0, 7, 9
5 4, 5
6 1, 5
7 2, 7
8 1
3. a. 13 inches b. I'm pretty sure that it is the second quarter because there is more snow. c. The first quarter because it's section is more spread out among the numbers.
Step-by-step explanation:
What is the exponential form of the expanded form below? Giving 100 points answer quickly please!,!
Answer:
last or 4th option : 10^5
Step-by-step explanation:
10^5 means 10 multipled 5 times
Find all possible values of a such that ax² + (2a + 2)x + a + 3 = 0 has two roots and the distance between them on the number line is greater than 1.
Answer:
\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0\)
Step-by-step explanation:
Given quadratic equation:
\(ax^2 + (2a + 2)x + a + 3 = 0\)
To find the possible values of "a" such that the given equation has two roots and the distance between them on the number line is greater than 1, use the quadratic formula.
\(\boxed{\begin{minipage}{4 cm}\underline{Quadratic Formula}\\\\$x=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}$\\\\when $ax^2+bx+c=0$ \\\end{minipage}}\)
Comparing the coefficients:
\(a = a\)\(b = (2a + 2)\)\(c = (a + 3)\)Substitute the coefficients into the quadratic formula:
\(x=\dfrac{-(2a+2) \pm \sqrt{(2a+2)^2-4a(a + 3)}}{2a}\)
Simplify the discriminant (the part under the square root sign):
\(x=\dfrac{-(2a+2) \pm \sqrt{-4a+4}}{2a}\)
Factor out 4 from the discriminant:
\(x=\dfrac{-(2a+2) \pm \sqrt{4(-a+1)}}{2a}\)
\(\textsf{Apply the radical rule:} \quad \sqrt{ab}=\sqrt{a}\sqrt{b}\)
\(x=\dfrac{-(2a+2) \pm \sqrt{4}\sqrt{-a+1}}{2a}\)
Therefore:
\(x=\dfrac{-(2a+2) \pm 2\sqrt{-a+1}}{2a}\)
Factor out the common term 2:
\(x=\dfrac{-(a+1)\pm \sqrt{-a+1}}{a}\)
Therefore, the two solutions are:
\(x=\dfrac{-a-1+\sqrt{-a+1}}{a},\;\;x=-\dfrac{a+1+\sqrt{-a+1}}{a}\)
As both solutions have "a" as their denominator, a ≠ 0.
Note: When substituting a = 0 into the original equation, we are left with a linear equation, which only has one root. Therefore, this confirms that a ≠ 0.
Now we have found expressions for the two roots, we can set the distance between them to greater than 1:
\(\dfrac{-a-1+\sqrt{-a+1}}{a}-\left(-\dfrac{a+1+\sqrt{-a+1}}{a}\right) > \:1\)
\(\dfrac{-a-1+\sqrt{-a+1}}{a}+\dfrac{a+1+\sqrt{-a+1}}{a} > \:1\)
Simplify:
\(\begin{aligned}\dfrac{-a-1+\sqrt{-a+1}+a+1+\sqrt{-a+1}}{a}& > 1\\\\\dfrac{2\sqrt{-a+1}}{a}& > 1\\\\2\sqrt{-a+1}& > a\\\\(2\sqrt{-a+1})^2& > a^2\\\\4(-a+1)& > a^2\\\\-4a+4& > a^2\\\\a^2+4a-4& < 0\\\\(a+2)^2-8& < 0\\\\(a+2)^2& < 8\end{aligned}\)
\(\textsf{For\;\;$u^n < a$,\;\;if\;$n$\;is\;even\;then\;\;$-\sqrt[n]{a} < u < \sqrt[n]{a}|$:}\)
\(-\sqrt{8} < a+2 < \sqrt{8}\)
Therefore:
\(-\sqrt{8} -2 < a < \sqrt{8}-2\)
\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2\)
So the possible values of "a" such that ax² + (2a + 2)x + a + 3 = 0 has two roots and the distance between them on the number line is greater than 1 are:
\(\large{\boxed{-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0}\)
A 4-cup bottle of bleach costs $1.28. What is the price per fluid ounce?
IXL
Answer:
$.04 per fluid ounce
Step-by-step explanation:
We need to change cups to fluid ounces.
1 cup = 8 fluid ounces
4 cups = 4*8 = 32 fluid ounces
We get 32 fluid ounces for $1.28
$1.28/32 fluid ounces
$.04 per fluid ounce
When multiplying the fractions StartFraction 1 Over 6 EndFraction and StartFraction 7 Over 8 EndFraction, what is the product of the numerators?
Answer:
7
Step-by-step explanation:
1/6 × 7/8
1×7=7
6×8=48
:)
PLS ANSWER FAST! Which table matches the information from the bar graph?
Answer: D
Step-by-step explanation: hope it helps
Which angle is complementary to EFA?
Answer: DFE
Step-by-step explanation:
complementay=90 degrees
Which expression is equivalent to sum of quantity negative two and one half times n plus one fourth end quantity plus quantity three and three fourths times n minus five eighths end quantity? five fourths times n minus three eighths five fourths times n plus seven eighths negative twenty five fourths times n minus three eighths negative twenty five fourths times n plus three eighths
Answer:
can you separate the words for i can understand it more to help you
Step-by-step explanation:
A jar contains 12 caramels, 7 mints, and 16 dark chocolates.
What is the probability of selecting a mint expressed as a fraction?
Drag each question to the correct location on the table. Classify the questions as statistical or not statistical. How many seeds are there in each orange growing in Sally’s orchard? How many oranges did Sally eat last month? How many dogs do the people in my neighborhood own? How many dogs do I have? How many hours do the children in my neighborhood spend doing extracurricular activities per week? How many hours do I spend on extracurricular activities each week?
Answer:
non statistical How many oranges did Sally eat last month?
non statistical How many dogs do I have?
statistical How many seeds are there in each orange growing in Sally’s orchard?
non statistical How many hours do I spend on extracurricular activities each week?
statistical How many hours do the children in my neighborhood spend doing extracurricular activities per week?
statistical How many dogs do the people in my neighborhood own?
srry if im late
Step-by-step explanation:
The Complete values
1. statistical
2. non statistical
3. statistical
4. non statistical
5. statistical
6. non statistical
What is Statistical and non statistical data?A statistical query will ask a question with a variable response. After collecting and analysing data, the answer might provide an interpretation of the information. A non-statistical query will yield data, but the findings will be consistent. There will only be one response.
1. How many seeds are there in each orange growing in Sally’s orchard?
statistical
2. How many oranges did Sally eat last month?
non statistical
3. How many dogs do the people in my neighborhood own?
statistical
4. How many dogs do I have?
non statistical
5. How many hours do the children in my neighborhood spend doing extracurricular activities per week?
statistical
6. How many hours do I spend on extracurricular activities each week?
non statistical
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HELPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
i agree with automigirl
Step-by-step explanation:
A spherical stone in the courtyard of the National Museum of Costa Rica has the
diameter of about 8 feet. Find the volume of the spherical stone. Round to the nearest
tenth. Leave your answer in terms of π.
A. 682.7 π cubic feet
B. 85.3 π cubic feet
C. 10.7 π cubic feet
D. 683.0 π cubic feet
hi please help sdijfsagg
Answer:
The given point is not on the line.
Step-by-step explanation:
3 represents x
3 represents y
1. Plug in the numbers to x and y variables
y= \(-\frac{2}{3}\) x + 1
3= \(-\frac{2}{3}\) (3) + 1
2. Cancel out the greatest common factor
3=-2+1
3. Solve
3=-1
If the numbers do not equal each other, then the equality is false.
Step-by-step explanation: 1. Plug in the numbers to x and y variablesy= x + 13= (3) + 1
2. Cancel out the greatest common factor 3=-2+13. Solve3=-1
Mr. Bryce planted a garden in his backyard. The length and width of the garden is shown below. What is the area, in square meters, of Mr. Bryce's garden?
If 1 lb. of strawberries cost 2.75, how much is 6 lbs.?
Answer:
$16.5
Step-by-step explanation:
if one pound is 2.75 dollars (unit rate) you multiply 2.75 by six to get the cost of six pounds.
Answer:
$16.5
Step-by-step explanation:
I hope this helps, if it doesn't then just message me and ill be more than happy to help :)
Someone please give me the brainliest answer to all these 5 questions
To find f(f^(-1)(9)), we need to first find f^(-1)(9), the inverse of f(9).
Given that f(4) = 9, we know that f^(-1)(9) is equal to 4.
Therefore, f(f^(-1)(9)) is equivalent to f(4).
Given that f(4) = 9 according to the problem statement, we can conclude that f(f^(-1)(9)) = 9.
Answer:
1. 4
2. y = sqrt(-x-2), domain: (-infinity, infinity)
3. (-infinity, infinity), (-infinity, infinity)
4. [0, infinity), [0, infinity)
5. 1/y^2
Which equation represents the function graphed on the coordinate plane?
a: g(x) = |x + 1| + 3
b: g(x) = |x + 3| – 1
c: g(x) = |x – 1| + 3
d: g(x) = |x + 3| + 1
Answer:
The answer is B
hopes this helps
Step-by-step explanation:
I had that same question and the answer was B
The equation that represents the function graphed on the coordinate plane is g(x) = |x – 1| + 3. The correct option is C.
What is a coordinate system?A coordinate plane is a 2D plane that is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A function is defined as the expression that set up the relationship between the dependent variable and independent variable.
The graph of the function is represented on the coordinate plane. In the graph, the values under the mode will always be positive. And the values of the function g(x) = |x – 1| + 3 start from the coordinate ( 1, 3). The graph of the function g(x) = |x – 1| + 3 is attached with the answer below.
Therefore, the equation that represents the function graphed on the coordinate plane is g(x) = |x – 1| + 3. The correct option is C.
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PLEASE HELP! WILL GIVE BRAINLIEST!
Explain what the slope and intercept mean in each situation.
please help me i will give brainliest to first person to anwser.
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
I need help, please quickly
Answer: The ratio is 18:3
Step-by-step explanation:
Answer: 6 to 1
Step-by-step explanation:
A ratio refers to a fraction. In this case the question asks how many players to coaches there are.
The word "to" means that is where the fraction bar goes.
Players/Coaches
There are 18 players and 3 coaches.
18/3
18 can be divided by 3, 6 times so the fraction can be simplified to
6/1 meaning there are 6 players for every coach.
In a given survey, 9 people said their favorite color is pink. This number represented 45% of the total people. How many total people took the survey?