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Bess [88]
3 years ago
11

Find the surface area of the rectangular prism

Mathematics
1 answer:
nika2105 [10]3 years ago
8 0

The team go skirt pop pop pop pop pop pop...

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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
Find the value of 33 ( one of the threes is a exponent) - (4)(2).<br><br> 1<br> 10<br> 19<br> 46
vampirchik [111]

19 is you awnser since:

By order of operations first do the exponent and then do the multiplication and finally the subtraction

3 to the third is 27

4 times 2 is 8

so 27-8 is 19

3 to the(3)-(4)(2)

27-(4)(2)

27-8

19 is your answer

5 0
3 years ago
Find the z-score that has 62.8% of the distribution's area to its right.
horrorfan [7]
<span>The best and easiest way to get it is by using a TI calculator and i hope you can have it, then you can type in the next: invnorm(1 - 0.628) What you are doing is that you are subtracting the probability from 1 because the invnorm function finds the z-score given the probability to the left of the z-score. I think that can help you. </span>

8 0
3 years ago
Solve algebraically for x: 3/4= -(x+11)/4x + 1/2x
pshichka [43]

Answer:

xbox series x is pretty good

Step-by-step explanation:

it has more power better graphics to. but ps5 still good but the xbox is better. disagree? look at the bionic chips and stuff. more teraflops and other stuff like GPU.

5 0
3 years ago
What is the interest due on $5,000 at 11% for 3 years?
g100num [7]
Amount after 11 years = 5000(1 + 0.11)^3 =  $6838.16

so interest is 1638.16 dollars
6 0
4 years ago
Read 2 more answers
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