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3 years ago

Plsssss help me!! ASAP, Brainlist! Plss help or I’m gonna fail, helpppp.

Mathematics

1 answer:

e-lub [12.9K]3 years ago

8 0

Answer:

. - 1 - 8 = -9

Step-by-step explanation:

- times - is equals to +
a small number cannot subtract a big number, so .... And; using a number line would make it easier to understand.

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What is the height of a pyramid (with a square base) whose side length is 12 cm and its slant

Bingel [31]

We have been given that side length of pyramid the square base is 12 cm and its slant height is 10 cm. We are asked to find the height of the pyramid.

We will use slant height of a pyramid formula to solve our given problem.

$s=\sqrt{h^2+\frac{1}{4}a^2}$ ,where,

s = Slant height,

h = Height,

a = Each side of square base.

Upon substituting our given values in above formula, we will get:

$10=\sqrt{h^2+\frac{1}{4}\cdot 12^2}$

$10=\sqrt{h^2+\frac{1}{4}\cdot 144}$

$10=\sqrt{h^2+36}$

Switch sides:

$\sqrt{h^2+36}=10$

Let us square both sides:

$(\sqrt{h^2+36})^2=10^2$

$h^2+36=100$

$h^2+36-36=100-36$

$h^2=64$

Now we will take positive square root of both sides.

$\sqrt{h^2}=\sqrt{64}$

$h=8$

Therefore, the height of the pyramid is 8 cm and option 'b' is the correct choice.

7 0

3 years ago

What is the product of 713 and 82

suter [353]

Just multiply them together and you'll get 58,466.

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3 years ago

Devi has a grid in the shape of a parallelogram. She has equilateral triangles with an area of 40 square millimeters that fit on

Ludmilka [50]

The area of the parallelogram is 26 × 10 = 260 cm^2 ;
The area of equilateral triangle is 0.4 cm^2 ;
<span>The </span>number<span> of triangles can Devi fit on the gris is 260 ÷ 0.4 = 260 × ( 10 / 4 ) = 2600 / 4 = 650 ;</span>

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4 years ago

in a survey of 400 people ,160 people said they would rather have a cat instead of a dog .what percent of the people said they w

Leya [2.2K]

Hi,

For this question, your answer would 40%.

All you had to was divide 160 by 400.

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4 years ago

HELP I NEED THIS DONE RN!!!1

Arlecino [84]

Answer:

Step-by-step explanation:

7 9/16 - 2 3/4 = 4 13/16

8 0

3 years ago

Read 2 more answers