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Mathematics

1 answer:

TiliK225 [7]2 years ago

5 0

Answer:

68cm^2

Step-by-step explanation:

Well there's not much to explain - the problem statement does it for us.

The surface area is equal to the sum of areas of the walls. There's 2 l*w walls, 2 l*h walls and 2 h*w walls.

SA = 2*l*h + 2*l*w + 2*h*w

SA = 2*4cm*6cm + 2*4cm*1cm + 2*6cm*1cm = 48cm^2 + 8cm^2 + 12cm^2 = 68cm^2

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Suppose you are standing on the edge of a canyon that is 400 meters high, where two sides of the canyon are at the same height a

pogonyaev

Set up a right triangle. the height is one side of triangle, its length is 400.
The angle opposite to the 400 is 14.3 degrees. The adjacent side is distance across, "x"

Use tangent ratio
$tan(14.3) = \frac{400}{x}$

$x = \frac{400}{tan (14.3)}$

7 0

3 years ago

For the equation -4y = 8x , what is the constant of variation?

Inga [223]

-4y = 8x

Divide both sides by -4

y = -2x

This is in the form of y = kx, where k is the constant of variation.
y = kx is the direct

That means, k = -2.

The constant of variation is B. -2.

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3 years ago

Read 2 more answers

Which ordered pairs make the inequality true?

salantis [7]

1.
$(-2,3) \\
x=-2 \\
y=3 \\ \Downarrow \\
-2+3 \times 3$

The ordered pairs (-2,3) and (5,1) make the inequality true.

2.
$15y-3(4y+10)=15y-3 \times 4y-3 \times 10= 15y-12y-30= \\
=3y-30$

The simplified form of the expression is 3y-30.

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3 years ago

A dance teacher makes bows for her students'

ivolga24 [154]

Answer:

24/36 or simplified 2/3 of a yard

Step-by-step explanation:

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2 years ago

Whats the average of the following? 101, 15,62,84 and 55

Ivan

The average of the following is 63.4