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3 years ago

10

Thirty students are at soccer practice. Each group of three students needs a soccer ball and two field cones . How many balls an

d cones are needed in all? balls ___. cones ____.

1 answer:

3241004551 [841]3 years ago

4 0

Answer:

10 soccer balls

20 cones

Step-by-step explanation:

30/3=10 groups

10*2=20

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2 years ago

What is the formula of (x^3 + y^3) as a factorized form?

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Answer:

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Step-by-step explanation:

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3 years ago

If 3/5 of a chorus is singing. What fraction of the chorus is not singing?

Montano1993 [528]

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3 years ago

Read 2 more answers

The input is 8 and the output is 26 what's the rule?

LuckyWell [14K]

Answer:

It could either be x * 3.25 or x + 18

Step-by-step explanation:

8 * 3.25 = 26

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3 years ago

Use completing the square to determine which of the following gives the solutions to 3x2 - 24x + 40 = 28.

jeka94

Answer:

$x=4+2\sqrt{3}$

$x=4-2\sqrt{3}$

Step-by-step explanation:

<u>Completing the square</u>

when $ax^2+bx+c=0$

Given equation:

$3x^2-24x+40=28$

Subtract 40 from both sides:

$\implies 3x^2-24x=-12$

Divide both sides by 3:

$\implies x^2-8x=-4$

Add the square of half the coefficient of $x$ to both sides:

$(\frac{b}{2})^2=(\frac{-8}{2})^2=16$

$\implies x^2-8x+16=-4+16$

Factor the left side and simplify the right side:

$\implies (x-4)^2=12$

Square root both sides:

$\implies x-4=\pm\sqrt{12}$

Add 4 to both sides and simplify the radical:

$\implies x=4\pm\sqrt{4 \cdot 3}$

$\implies x=4\pm\sqrt{4}\sqrt{3}$

$\implies x=4\pm2\sqrt{3}$

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1 year ago