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GenaCL600 [577]
2 years ago
9

Evaluate. [42 ÷ (2 + 3 • 2)] + [4 • (36 – 52)] I really need help!!!

Mathematics
1 answer:
juin [17]2 years ago
8 0
Ok so first we do 2 + 3 = 5 * 2 = 10 / by 42 = 4.2

other side 36 - 52 = 16 * 4 = 64 now add     4.2 + 64 = 68.2
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Find the volume of the following. Please round your answer to the nearest tenth. Please do not put units. Hint: You need to use
Sophie [7]

Answer:

<em>V = 1,568</em>

Step-by-step explanation:

<u>The Volume of a Square Pyramid</u>

Given a square-based pyramid of base side a and height h, the volume can be calculated with the formula:

\displaystyle V=\frac{1}{3}a^2h

We are given a square pyramid with a base side a=14 ft but we're missing the height. It can be calculated by using the right triangle shown in the image attached below, whose hypotenuse is 25 ft and one leg is 7 ft

We use Pythagora's theorem:

25^2=h^2+7^2

Solving for h:

h^2=25^2-7^2=625-49=576

h=\sqrt{576}=24

The height is h=24 ft. Now the volume is calculated:

\displaystyle V=\frac{1}{3}*14^2*24

V = 1,568

3 0
2 years ago
Help please and thanks! I always give brainliest!
Alika [10]

Answer:

X = 18

y = 9

Step-by-step explanation:

Basically the 2 diagnols bisect each other making them congruent. so that makes

x-3 = 15 and y + 3 = 12

simplify and

the. you simplify and get x = 18 and y =9

3 0
2 years ago
There are 321 kids on a field trip. There are 5 more girls than boys. How many girls are there? How many boys?
Ratling [72]
158 boys, and 163 girls, do this by dividing 321 by two(do get how many of each gender if #s were equal) subtract 2.5 to get boys, and add 5 to that to get girls
4 0
3 years ago
68/100 as a fraction? <br> 5/10 as a fraction?
horsena [70]

Answer:

68/100 - 17/25

5/10 - 1/2

Step-by-step explanation:

You have to simplify both into lowest term.

8 0
2 years ago
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myrzilka [38]

Answer:

$500 invested at 3%

$1300 invested at 6%


Step-by-step explanation:


8 0
3 years ago
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