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Elis [28]
4 years ago
10

PLZ HELP WILL MARK BRAINLIEST 30 POINTS

Mathematics
1 answer:
mariarad [96]4 years ago
8 0
Rigid motions like rotations and reflections apply to congruence for transformations because rigid motions are transformations and to get to another shape you need to apply rigid motions step by step. Hope this helps!!
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The transformer (grey box) on this power line is how far above the ground?
frez [133]

The transformer is 27.5 ft above the ground.

Solution:

The given image is like a triangle.

Angle 'L' represents the triangle is right triangle.

Use Pythagoras theorem to find the answer.

Base of the triangle = 12 ft

Hypotenuse of the triangle = 30 ft

Height of the triangle = x

Using Pythagoras theorem,

\text{Base} $^{2}+$ Height $^{2}=$ Hypotenuse $^{2}$

12^2+x^2=30^2

144+x^2=900

Subtract 144  on both sides of the equation.

x^2=900-144

x^2=756

Taking square root on both sides.

x=27.5

Hence the transformer is 27.5 ft above the ground.

6 0
3 years ago
If y =2x^2 -4x-5, what is the value of y when x= -3
matrenka [14]

Answer:

43

Step-by-step explanation:

36+12-5

48-5

4 0
3 years ago
Select the correct product. (x 2 4x 8)(2x - 1) 2x3 7x2 12x - 8 2x3 - 7x2 - 12x - 8 x2 6x 7 x2 8x - 8
kow [346]
(x^2 + 4x + 8)(2x - 1) = 2x(x^2 + 4x + 8) - (x^2 + 4x + 8) = 2x^3 + 8x^2 + 16x - x^2 - 4x - 8 = 2x^3 + 7x^2 + 12x - 8
7 0
4 years ago
What is the slope of the line ?
Svetradugi [14.3K]

Slope of a line

m = \frac{\text{rise}}{\text{run}} = \frac{y_2 - y_1}{x_2 - x_1}

m = slope

(x_1, y_1) = coordinates of first point in the line

(x_2, y_2) = coordinates of second point in the line

How do I find the slope of the line?

The slope equals the rise divided by the run: . You can determine the slope of a line from its graph by looking at the rise and run. One characteristic of a line is that its slope is constant all the way along it. So, you can choose any 2 points along the graph of the line to figure out the slope.

4 0
4 years ago
Sam obtains a $20,000 loan for a new car. If the interest rate is 3.5% with a loan term of 72 months, how much will his monthly
sleet_krkn [62]

Answer:  287.5 monthly payments

Step-by-step explanation:

3.5 = 0.035= 700  20,000 + 700 = 20,700 ÷  72 =287.5   This is a step by step equation but first you convert or simplify the percent to decimal then you make it to a whole number and you get what the percent is equal to. Next , you add 700 to 20,000 an you get 20,700. Lastly you divided 20,700 by 72 and you get the answer 287.5 .

6 0
3 years ago
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