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3 years ago

WORTH 15 POINTS!!!

Mathematics

1 answer:

12345 [234]3 years ago

5 0

Answer:

Hi, don't worry, I am not one of those persons who want to answer just because of points. Please look in the chat. Brainliest please...

Step-by-step explanation:

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Giving right answer a branleist

Marta_Voda [28]

Answer:

yes, (8×10) - (8×3)

hope this helps :)

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3 years ago

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R-12 evaluate if r= 7

lara [203]

r-12
substitute in r=7
so 7-12 = -5

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3 years ago

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Simplify: 18q2−45q+25/9q2−25.

Svet_ta [14]

Answer:

$\frac{(6q-5)}{(3q+5)}$

Step-by-step explanation:

Given: $\frac{18q^{2}-45q+25 }{9q^{2}-25 }$

Factorizing the numerator and the denominator, we have:

18 $q^{2}$ - 45q + 25 = 18 $q^{2}$ - 30q - 15q + 25

= (3q - 5)(6q - 5)

and

9 $q^{2}$ - 25 = (3q - 5)(3q + 5)

So that,

$\frac{18q^{2}-45q+25 }{9q^{2}-25 }$ = $\frac{(3q-5)(6q-5)}{(3q-5)(3q+5)}$

= $\frac{(6q-5)}{(3q+5)}$

Therefore,

$\frac{18q^{2}-45q+25 }{9q^{2}-25 }$ = $\frac{(6q-5)}{(3q+5)}$

5 0

3 years ago

Tony worked 4 2/3 hours on his science project. Sonia worked 1 1/4 times as long on her science project as Tony did.For how many

kherson [118]

To find how many hours Sonia work on her science project,we can multiply the working hours of Tony by the times Sonia did:

$4 \frac{2}{3} \times 1 \frac{1}{4} \\ = \frac{14}{3} \times \frac{5}{4} \\ = \frac{70}{12} \\ = 5 \frac{10}{12} \\ = 5 \frac{5}{6}$
Therefore Sonia work on her science project for 5 5/6 hours.

Hope it helps!

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3 years ago

Anyone please help me

scZoUnD [109]

I think it’s 5/4 because from (0,-1) you go up 5 and then left 4

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3 years ago

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