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stepladder [879]
3 years ago
9

Word Problem: Kiara must sell 40 magazines to raise money for the art club. She sold 2/5 of the magazines to her relatives and 1

/4 of the remainder to her friends. How many magazines did Kiara have left to sell?
Mathematics
1 answer:
Oduvanchick [21]3 years ago
7 0
Im not positive but i think she sold 26 of them and that would leave her with 14 left to sell.
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Here's the deal. I give you a question, you give me an answer. I give you points and Brainliest if possible. You use the points
olga55 [171]

Answer:

f(x) = -(x-3)^2 + 4

Step-by-step explanation:

(h; k) are the coordinates of the vertex.

On the graph are (3, 4), therefore we have:

f(x) = a(x-3)^2 + 4

We have the x- intercept (1,0) -> x=1; y=0.

Substitute them into the equation:

0 = a(1 - 3)^2 + 4

0 = a(-2)^2 + 4

4a + 4 = 0 | -4

4a = -4   |-4

a = -1

So, we have the answer:

f(x) = -(x-3)^2 + 4

5 0
3 years ago
X²+7x+10=0 a=1, b=7, c=10 b²-4ac=(7)²-4(1) (10) =49-4(10) =49-40 =9​
Sloan [31]

Answer:

X=5

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Step-by-step explanation:

8 0
3 years ago
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rodikova [14]

Answer:

7/165

Step-by-step explanation:

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Now ,the denominator:

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For each non repeating decimal we write a zero

Denominator is 990

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kipiarov [429]

Answer:

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Step-by-step explanation:

we know that

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where K is the constant of proportionality

In this problem we know that

The circumference of a circle is equal to

C=\pi D

therefore

the relationship between the circumference of a circle and its diameter is a direct variation and the constant of proportionality is equal to the constant \pi

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Graph the systems of equations.
Pepsi [2]
Using a graphical tool we obtain that the solution of this system
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3 0
3 years ago
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