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3 years ago

Please help and explain!!!!!!!!!!!

Mathematics

2 answers:

murzikaleks [220]3 years ago

4 0

a=9.3 units

Explanation:

Use pythagorean theorem,

c2=b2+a2

Rearrange,

a=√c2−b2

Sub in and solve,

a=√(12.6)2−(8.5)2

a=9.30 units

hope i helped -beanz:)

Rainbow [258]3 years ago

4 0

A= √c^2-b^2
a= √12.6^2-8.5^2
a=√158.76-72.25
a=√86.51
a= 9.301

Letter a is the correct answer.

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Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

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Answer:

3/11

Step-by-step explanation:

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2 years ago

Area and perimeter pls

Alla [95]

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2 years ago

Witch of the following expression is equivalent to the logarithmic expression below. log(3)5/x^2

BabaBlast [244]

Assuing you mean
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4 0

3 years ago

Read 2 more answers

Find the mean, median, mode, and range of the data set after you perform the given operation on each

agasfer [191]

Answer:

mean= 8.8

median= 9

mode= 9

range= 10

ANSWER: A

Step-by-step explanation:

6 0

2 years ago

If cosa=1/2(a+1/a), verify that. cos2a=1/2(a²+1/a²)

Alborosie

Answer:

see explanation

Step-by-step explanation:

using the identity

cos2a = 2cos²a - 1 , then

cos2a

= 2[ $\frac{1}{2}$ (a + $\frac{1}{a}$ ) ]² - 1

= 2 [ $\frac{1}{4}$ (a² + $\frac{1}{a^2}$ + 2) ] - 1

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1 year ago