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I am Lyosha [343]

3 years ago

14

Brainliest reward math question

2 answers:

Paladinen [302]3 years ago

7 0

Dude you are puuting up so many questions today.
hard questions im trying. too hard

Lemur [1.5K]3 years ago

3 0

1. A
To do find the deduction, you do 978 x.05.
2. I don't understand the question at all, I'm very sorry.

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Referring to the scale, 1:50 what is the actual measurement of the wall marked 18 cm on the plan?

vfiekz [6]

Answer:

900 cm

Step-by-step explanation:

1 : 50

We need the first number to be 18 so multiply by 18

1:18 : 50*18

18 cm : 900 cm

4 0

3 years ago

What is the equation of the line shown in this graph?

igor_vitrenko [27]

Answer:

y=1

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3 years ago

Can someone please help me?

cricket20 [7]

Answer:

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3 years ago

Which expression is equivalent to am ÷ an?

tatiyna

Answer:

$\frac{m}{n}$

Step-by-step explanation:

Setting it up as a fraction will help us see the simplification process a bit easier.

$\frac{am}{an}$

a/a = 1, so they cancel each other out, leaving us with simply

$\frac{m}{n}$

7 0

3 years ago

This net can be folded to make a square pyramid. what is the surface area of the pyramid

givi [52]

Answer:

$85in^2$

Step-by-step explanation:

to find the surface area we need to find the followng areas:

area of the square

area of a triangle and multiply it by 4 (because there are 4 triangles)

And once we have those areas, we add them to find the surface area.

Area of the square:

the formula to find the area of a square is:

$a_{square}=l^2$

where $l$ is the length of the side: $l=5in$

thus the area of the square is:

$a_{square}=(5in)^2$

$a_{square}=25in^2$

Area of the triangles:

the are of 1 triangle is given by

$a_{triangle} =\frac{b*h}{2}$

where $b$ is the base of the triangle: $b=5in$ (the base of the triangle is the side of the square)

and $h$ is the height of the triangle: $h=6in$

thus, the area of 1 triangle is:

$a_{triangle} =\frac{(5in)*(6in)}{2}$

$a_{triangle} =\frac{30in^2}{2}$

$a_{triangle} =15in^2$

the area of the 4 triangles is (we multiply by 4):

$a_{4-triangles}=4(15in^2)$

$a_{4-triangles}=60in^2$

finally we add the area of the square and the area of the 4 triangles to find the total surface area:

$Surface=25in^2+60in^2$

$Surface=85in^2$

8 0

2 years ago