3 years ago

HELP AND HURRY I WILL GIVE BRAINLIEST TO BEST ANSWER

Mathematics

1 answer:

SpyIntel [72]3 years ago

4 0

Answer: 60

Step-by-step explanation:

6x10=60

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Each year lizzy e's school purchases students agenda books, which are sold in the school store.This year, the school purchased 3

notsponge [240]

In order to make back the money they spent ($1,137.50) plus $1500, they want to make $1137.5+1500=2637.5$ $2,637.50 total.

They want to make this amount by selling 350 agendas, so divide the amount they want to make by 350 to find the amount per book:
$2637.5/350=7.54$
I rounded the answer to the nearest hundredth because the hundredth is the smallest amount we have in USD (the penny.)
So they need to charge at least $7.54 to make back their money plus $1500.

Hope I helped, and let me know if you have any questions :)

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2 years ago

Find the coefficient of the x^3 in the expansion of (2x-9)^5

il63 [147K]

Use the binomial theorem:

$\displaystyle (2x-9)^5 = \sum_{k=0}^5 \binom5k (2x)^{5-k}(-9)^k = \sum_{k=0}^5 \frac{5!}{k!(5-k)!} 2^5 \left(-\frac92\right)^k x^{5-k}$

The x ³ terms occurs for 5 - k = 3, or k = 2, and its coefficient would be

$\dfrac{5!}{2!(5-2)!} 2^5 \left(-\dfrac92\right)^2 = \boxed{6480}$

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3 years ago

I need help to see if their equivalent help fast pls

Taya2010 [7]

They are not equivalent. When you distribute the 1/4, the expressions are different.

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3 years ago

Please help me I DO NOT UNDERSTAND

stepladder [879]

Are they asking for the surface area?

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2 years ago

Solve the equation by completing the square. round to the nearest hundredth if necessary. x^2-6x=20

amm1812

X^2 - 6x = 20
x^2 - 6x + 9 = 20 + 9
(x - 3)^2 = 29
x - 3 = (+-) sqrt 29
x = 3 (+-) sqrt 29
x = 3 (+-) 5.39

x = 3 + 5.39 = 8.39 <=
x = 3 - 5.39 = - 2.39 <=

6 0

3 years ago

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HELP AND HURRY I WILL GIVE BRAINLIEST TO BEST ANSWER