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3 years ago

Please do them all please

Mathematics

1 answer:

san4es73 [151]3 years ago

4 0

Answer:

7(3 + 3x) = 21x + 21

2d + 10(4d +4 + 2a) = 20a + 42d + 40

3t + 2x + x = 3t + 3x

5(r + 12) - 25 = 5r + 35

18s + 12rs + 10r - 2rs = 10rs + 10r + 18s

s(12 - 4) + 2 = 8s + 2

w(15 - 3) + 2 + 7w = 19w + 2

Step-by-step explanation:

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The measure of an angle is forty-four times the measure of its complementary angle. What is the measure of each angle?

mr_godi [17]

Answer:

Step-by-step explanation:

Suppose two angles ∠A and ∠B of measures x and y

A and B are complementary means x + y = 90

the measure of B is 44 times the measure of A means y = 44x

then we have to solve the system

x + y = 90

y = 44x

then

x + 44x = 90

then

45x = 90

then x = 90/45

= 2

therefore

y = 44×(2)

= 88

______________________

3 0

3 years ago

Someone help me please i don’t know how to do square units

Jet001 [13]

Answer: 78.

Explaination:

To calculate the area of a triangle, multiply the height by the width aka the "base" then divide by 2.

In this case, the height is 13 and the width is 12.

$S = \frac{height.width}{2} = \frac{13.12}{2} = 78$ .

8 0

2 years ago

Polygon ABCD is rotated 90° counterclockwise about the origin to create polygon A'B'C'D'. natch each set of coordinates to the v

Sati [7]

These questions are no problem, so long as you remember the rules for rotations. A point that is rotated 90 counterclockwise is simply x and y flipped, and negating the y.

For example, 2,9 becomes -9, 2.

So point A would be -1, 1, B would be -2, 1. So on and so forth.

5 0

3 years ago

A dog trainer has 96 ft of fencing that will be used to create a rectangular work area. Encloses area of 320 ft^2. What will be

Anastaziya [24]

Answer:

<em>The dimensions of the area will be 8 ft x 40 ft</em>

Step-by-step explanation:

<u>Area and Perimeter</u>

The perimeter can be understood as the distance measured around a shape. The area gives us the idea of the space occupied by the shape. Being w and l the width and length of a rectangle, the perimeter and areas can be computed as follows

$A=wl$