HELP ME PLEASE?? I neeed help

Answers

Answer 1

Answer: a. That prism is composed of two similar triangles and 3 different rectangles. The area of a triangle is A = (base*height)/2. The area of a rectangle is A = length*width.

Surface area = 2*[(16*12)/2] + 32*20 + 12*32 + 16*32 = 1728 cm^2

b. The surface area of a cone is A = pi*radius*length
A = pi*9*19 = 537 yd^2

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in a swimming race, a student swam the first 50 meters in 42 seconds. she swam the secons 50 meters in 40 seconds. what was the students average speed during the race?

Answers

All you have to do is add 40 and 42 together and divide by 2. It's basically finding the mean.

Mrs. Epps buys 500 bags of balloons for the high school prom for $250. What is the cost per bag?

Answers

500/250=1/x
cross multiply
250(1)=(500)x
250=500x
divide both sides by 500
$0.50 per balloon

Write an expression
the quantity of 7+x, squared

Answers

Answer:

( X+7 ) ^ 2

Step-by-step explanation:

=X ^ 2+ 2 x 7 x X + 7 ^ 2

= X^2 +14X +49

Answer:

$\huge \boxed{(x+7)^2 }$

Step-by-step explanation:

The quantity x + 7 is squared.

$(x+7)^2$

Expand the brackets and simplify the expression.

$(x+7)(x+7)$

$x(x+7)+7(x+7)$

$x^2 +7x+7x+49$

$x^2 +14x+49$

We can leave the expression in factored form.

Why is the sky blue?

Thanks :)

Answers

Answer:

Violet and blue light have the shortest wavelengths and red light has the longest. Therefore, blue light is scattered more than red light and the sky appears blue during the day. When the Sun is low in the sky during sunrise and sunset, the light has to travel further through the Earth's atmosphere.

Find the missing terms in the sequence:
18, -72, 288,