3 years ago

I don’t know , help you

Mathematics

1 answer:

Sphinxa [80]3 years ago

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In the figure below, APQR is a reflection of ATSA.

balu736 [363]

Answer:

both student one and student two

Step-by-step explanation:

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3 years ago

the ratio of seniors to juniors in the math club is 2:3. If there are 21 juniors, how many seniors are in the club?

Bond [772]

Answer:14

Step-by-step explanation:

1. Ratio : 2:3

2. Multiply the number of juniors by the Ratio

(2/3)(21)

3. Solve for answer

Answer: 14

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3 years ago

What should be done to x^2 + 15x in order to create a perfect square?

lana [24]

$\bf \qquad \textit{perfect square trinomial} \\\\ (a\pm b)^2\implies a^2\pm \stackrel{\stackrel{\text{\small 2}\cdot \sqrt{\textit{\small a}^2}\cdot \sqrt{\textit{\small b}^2}}{\downarrow }}{2ab} + b^2 \\\\[-0.35em] ~\dotfill$

$\bf x^2+15x+\boxed{?}^2\implies \stackrel{\textit{we know the middle term is}}{2\sqrt{x^2}\cdot \sqrt{\boxed{?}^2}\implies 2x\boxed{?}}\qquad then\qquad 2x\boxed{?}=15x \\\\\\ \boxed{?}=\cfrac{15x}{2x}\implies \boxed{?}=\cfrac{15}{2}\qquad \impliedby \textit{we should add that much \underline{squared}} \\\\[-0.35em] ~\dotfill\\\\ x^2+15x+\left( \cfrac{15}{2} \right)^2\implies \left(x+ \cfrac{15}{2} \right)^2$

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3 years ago

the total is 30 coins and 3 dollars. there are twice as many nickles as dimes. how many nickles and dimes and there

beks73 [17]

Answer:

20 nickels and 10 dimes.

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3 years ago

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A total of 60 students in your cousin's school are taking Spanish class this year. This is 25% more than the number of students

alina1380 [7]

Since 25% is 1/4, you multiply 60 by 1/4 to get how many students took Spanish class last year. So, 60 times 1/4 is 60/4, which is 15. Then you subtract 15 from 60 to get 45. So, 45 students took Spanish class last year.

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3 years ago

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