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dmitriy555 [2]
2 years ago
14

What is the total surface area of a square pyramid with a base length of 10 meters and a slant height of 13 meters?

Mathematics
2 answers:
Temka [501]2 years ago
5 0

Answer:

379 (Rounded to nearest whole)

A = a² + 2a \sqrt{\frac{a^2}{4} + h^2}

    = 10² + 2 × 10 × \sqrt{\frac{10^2}{4} + 13^2 } ≈ 378.57

Harlamova29_29 [7]2 years ago
3 0
130 please give Brian
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Two angles in a triangle measure 1020 and 670. What is the measure of the third angle?
Brilliant_brown [7]

Answer:

A) 11°

Step-by-step explanation:

All triangles equal 180, so:

102 + 67 + x = 180

169 + x = 180

x = 11

3 0
3 years ago
Consider this equation.
mina [271]

Answer:

No, Mia is not correct, the answer is -2.

Step-by-step explanation:

First we are going to use the distributive Property.

Step 1: 2(0.75+0.4). multiply the 2 out. .75m x 2=1.5m and 2 x .4= .8.

We get 1.5m+.8, so 2(0.75+0.4)=1.5m+.8

Now we are going to distribute on the oher side. 4(.5m-.8)

4x .5m=2m and 4x.8=3.2. Keep the sign the same and we get 2m-3.2, so 4(.5m-.8)=2m-3.2

We put this into the new equation to get 1.5m+.8+7.8=-6.4m+2m-3.2

Step 2: combine like terms

.8+7.8= 8.6 and -6.4m +2m =-4.4m

Plug that into our equation and we get 1.5mn+8.6=-4.4m-3.2

Step 3: Switch the sides

Bring -4.4m to the other side to get 1.5m+4.4m=5.9m

One side is 5.9m

We bring 8.6 to the other side to get -8.6. now we do -3.2-8.6=-11.8.

Our new equation is 5.9m=-11.8

divide by 5.9 on both sides to get our answer of

m=-2

6 0
3 years ago
Read 2 more answers
20 POINTS BRAINLIEST math
8090 [49]

Answer:

OPTION C

Step-by-step explanation:

Given: $ y = \sqrt{36 - 72} + 5 $

This can be rewritten as: $ y = \sqrt{36(x - 2)} + 5 $

Also, since $ \sqrt{ab} = \sqrt{a}.\sqrt{b} $

$ \implies y = \sqrt{36}.\sqrt{x - 2} + 5 $

We know that $ \sqrt{36} = 6 $

$ \implies y = 6\sqrt{x - 2} + 5 $

Hence, Option C would the answer.

6 0
3 years ago
Which of the following demonstrates the distributive property?
AlladinOne [14]

Answer:

D. (r + s)t = rt + st

Step-by-step explanation:

Distribute means that the term outside gets multiplied to each term on the inside of the parentheses

(r + s)t = rt + st

8 0
3 years ago
20 Points! Help pls! !
lara31 [8.8K]
Well i think it 120 your welcome
3 0
3 years ago
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