3 years ago

Which is the 30o-60o-right triangle theorem?

1 answer:

3 0

A 30 60 90 triangle is when one angle is 30, another is 60 and the other one is 90. and the side across from the 30 is x(1) and the one across from 60 is x rote 3(rote 3) and across from 90 is 2x(2).

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A random sample of 100 recorded deaths in the United States during the past year showed an average life span of 71.8 years. Assu

Oliga [24]

Answer:

This indicates that the chances of the mean life span today is greater than 70 years is 0.5871

Step-by-step explanation:

The past year showed an average life span of 71.8 years.

$\mu = 71.8 years$

Population standard deviation = 8.9 years

$\sigma = 8.9 years$

We are supposed to find the mean life span today is greater than 70 years

i.e. P(X>70)

Formula : $Z = \frac{x-\mu}{\sigma}$

$Z=\frac{70-71.8}{8.9}$

Z=−0.202

P(X<70)=0.4129

P(X>70)=1-P(X<70)=1-0.4129=0.5871

Hence This indicates that the chances of the mean life span today is greater than 70 years is 0.5871

7 0

3 years ago

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There are 17 girls and 13 boys in a school club. What is the percent of the members are girls?

tresset_1 [31]

Answer:

131%

Step-by-step explanation:

17:13

17 ÷ 13 = 1.3076923076923 = 130.76923076923%

6 0

3 years ago

100 POINTS!!!!!!!!!! PLEASE HELP NEED THIS DONE AS SOON AS POSSIBLE ASAP

Llana [10]

Answer:

20.28

Step-by-step explanation:

Triangles; 4

Area of 1 Triangle; 2

Rectangles; 8

Semi Circle; 6.28

Area in total; 20.28

Hope This Helps! :)

4 0

1 year ago

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Help please what is 6 -7/9

Aneli [31]

5.22 is the answer......

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2 years ago

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Find two positive consecutive integers whose product is 132.

iren2701 [21]

If x is the first integer, then x+1 is the second. x(x+1)=132 or x^2+x-132=0. This factors as (x-11)(x+12)=0. Thus either x=11 or x=-12
<span>So either 11 and 12 or -12 and -11 will do.</span>

7 0

3 years ago