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kotegsom [21]
3 years ago
11

Taree fourts of the 64 books were math books. determine the percent of the books that were math books.​

Mathematics
1 answer:
Volgvan3 years ago
4 0

Answer:  <em>75% - these are books on mathematics.</em>

Step-by-step explanation:

\dfrac{3}{4} \cdot 64 = 48\\

<em>64 - 100%</em>

<em>48  -  x%</em>

\dfrac{64}{100} =\dfrac{48}{x}\\\\x=\dfrac{48 \cdot 100}{64}  \\\\x=75 \%

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agasfer [191]

Hey again!

The answer to your question is 14.54 inches

We can find this by doing 1454/100, and that is 14.54.

Hope it helps, have a great day! Let me know if there's more to help with.

4 0
3 years ago
Please answer the question from the attachment.
spin [16.1K]

Hi,

7x²-2x-8=0, so a = 7, b= - 2, and c = -8.

You just need to apply the formula for square equations:

x_{1,2}=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-(-2)\pm\sqrt{(-2)^2-4\cdot 7\cdot (-8)}}{2\cdot 7}=\dfrac{2\pm\sqrt{228}}{14}=\dfrac{2\pm\sqrt{4\cdot 57}}{14}=\\\\=\dfrac{1\pm\sqrt{57}}7\Rightarrow x_1=\dfrac{1-\sqrt{57}}7,\;and\;x_2=\dfrac{1+\sqrt{57}}7.

Green eyes.

7 0
3 years ago
Jenny is in charge of ordering T-shirts for the math club at her school. If she paid $322 for 23 T-shirts, which of the followin
TiliK225 [7]

Answer:

B. Jenny paid $322 for 23 T-shirts, which is a rate of $14 per T-shirt.

Step-by-step explanation:

To find the rate per shirt, divide the cost by the number of shirts:

322/14

= 14

So, she paid $322 at a rate of $14 per shirt.

Therefore, B is correct.

4 0
3 years ago
Why is the end behavior of a quadratic function different from a linear function?
inna [77]

A linear function can’t repeat but a quadratic function can

4 0
3 years ago
6 times a number is 27 less than the square of that number. Find the positive solution.
Sergeu [11.5K]

Answer:

The positive integer is 9

Step-by-step explanation:

6 times a number is 27 less than the square of that number.

Let the number be x

These interpreted means 6 nultiplies by x is 27 less than the square of that number(x^2). F

6x= 27<x^2

0 = 27<-6x+x^2

Look for 2 numbers whose product is 27 and sum is -6

0 = 27<-9x+3x+x^2

0 = -9(3+x)+x(3+x)

0 = (x-9)(3+x)

x-9 = 0 3 + x =0

x= 9 -3 = x

The positive integer is 9

8 0
3 years ago
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