What is the perimeter of the triangle?

Mathematics

2 answers:

Afina-wow [57]3 years ago

8 0

We can count the bottom units to get 10 units. Now to get the sides of it.

Let’s split this triangle in the middle to get two right triangles.

The height of the triangle is 12 units and one of the legs is 5 ( from 10/2 )

Let’s find the hypotenuse

(5) ^2 + (12) ^2 = c^2

C = 13

So this mean each side is 13 units

13 + 13 + 10 = 36 units

Perimeter = 36 units

Stolb23 [73]3 years ago

7 0

Answer:

Step-by-step explanation:

5,9,8

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Let p be the proportion of adults have heard of the new electronic reader.

Given claim : The accompanying technology display results from a test of the claim that 38% of adults have heard of the new electronic reader.

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So the sample proportion for adults have heard of the new electronic reader : $\hat{p}=\dfrac{522}{1558}\approx0.34$

The test statistic for proportion is given by :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\\Rightarrow\ z=\dfrac{0.34-0.38}{\sqrt{\dfrac{0.38(1-0.38)}{1558}}}\\\\\\\Rightarrow\ z=-3.25279036541\approx-3.25$