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Nikolay [14]
2 years ago
10

PLEASE HELP I HAVE A TEST TOMORROW

Mathematics
2 answers:
NeX [460]2 years ago
5 0

Step-by-step explanation:

use the picture as reference and solve accordingly

best of luck for your test

Paraphin [41]2 years ago
4 0

Answer:

a = 12

Step-by-step explanation:

Pythagorean Theorem: A^2 + B^2 = c^2

9^2 + b^2 = 15^2

81 + b^2 = 225

225 - 81 = 144

\sqrt{144} = 12

Have an amazing day!!

Good luck on your test!!

Please rate and mark brainliest!!

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Juliette [100K]

Answer:

126.

Step-by-step explanation:

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= 9C4

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A quick way of calculating this is  

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7 0
3 years ago
If tñ=2ñ+3, find S10​
Allisa [31]

Answer:

S_{10}=280

Step-by-step explanation:

Given that,

t_n=2n+3 ...(1)

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Put n = 2 to find the second term.

t_2=2(2)+3=7

Put n = 3 to find the third term.

t_3=2(3)+3=9

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It means we need to find the sum of 5,7,9,.....,23.

The formula for the sum of n terms is given by :

S_=\dfrac{n}{2}(a+a_n)

We have, n = 10, a = 5 and a_n=23

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S=\dfrac{10}{2}(5+23)\\\\S_{10}=10\times 28\\\\=280

So, the value of S_{10} is equal to 280.

3 0
3 years ago
A countertop is 15 feet long and 8 feet wide.
stiv31 [10]

Answer:

it will help you

Answer:

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4 0
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7 0
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