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Ymorist [56]
4 years ago
14

I NEED HELP RIGHT NOW PLEASE!!!!!!!!!! h-(-2.22)=-7.851

Mathematics
1 answer:
Leviafan [203]4 years ago
6 0
<h3>I'll teach you how to solve h-(-2.22)=-7.851</h3>

---------------------------------------------------------

h-(-2.22)=-7.851

Apply rule:

h+ -2.22=-7.851

Subtract 2.22 from both sides:

h+ -2.22-2.22 =-7.851-2.22

Simplify:

h= -10.071

Your Answer Is h= -10.071

plz mark me as brainliest :)

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an isosceles triangle has congruent sides of 20cm. the base is 10cm. find the height of the triangle.​
dolphi86 [110]

Answer:

\large\boxed{A_\triangle=25\sqrt{15}\ cm^2}

Step-by-step explanation:

Look at the picture.

The formula of an area of a triangle:

A_\triangle=\dfrac{bh}{2}

<em>b</em><em> - base</em>

<em>h</em><em> - height</em>

<em />

We need a length of a height.

Use the Pythagorean theorem:

leg^2+leg^2=hypotenuse^2

We have:

leg=5,\ leg=h,\ hypotenuse=20

Substitute:

5^2+h^2=20^2

25+h^2=400             <em>subtract 25 from both sides</em>

h^2=375\to h=\sqrt{375}\\\\h=\sqrt{(25)(15)}\\\\h=\sqrt{25}\cdot\sqrt{15}\\\\h=5\sqrt{15}\ cm

Calculate the area:

A_\triangle=\dfrac{(10)(5\sqrt{15})}{2}=\dfrac{50\sqrt{15}}{2}=25\sqrt{15}\ cm^2

8 0
4 years ago
A news service conducted a survey of 1026 adults ages 18 years or older in a certain​ country, August 31minus−September ​2, 2015
Musya8 [376]

Answer:

B. To determine the percent of adults in the country who believe the federal government wastes 51 cents or more of every dollar.

Step-by-step explanation:

Given that:

sample size = 1026

sample proportion = 0.36

Margin of error = 55% = 0.55

Confidence interval level = 99%

The purpose of this question is to determine the research objective:

The research objectives indicate the intention of the study, the objectives,\ or the main idea. This main idea arises from a need (the research problem) and refined into specific questions (i.e. the research questions). From, the given information, the research objective is to determine the percent of adults in the country who believe the federal government wastes 51 cents or more of every dollar.

7 0
3 years ago
I’m new to this app so I don’t know how to give more points but I would appreciate it if you could help
faust18 [17]

Hi! The answer would be all real numbers!

Hope this helps! :)

8 0
3 years ago
The length of a rectangle is 13 ft. And its width is 49 ft. What is its perimeter? 512 ft 427 ft 79 ft 159 ft
crimeas [40]

Answer:

  = 124 ft

Step-by-step explanation:

Perimeter of a rectangle is

P = 2(l+w)

We know the length is 13 and the width is 49

P = 2(13+49)

   =2(62)

   = 124 ft

7 0
3 years ago
Read 2 more answers
PLEASE ANSWWR ASAP thanks
AleksAgata [21]
(4x - 8) = 80/2
4x - 8 = 40
4x = 48
x = 12
answer
x = 12
4 0
3 years ago
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