I don’t know how to do this and I need help

Mathematics

1 answer:

lilavasa [31]3 years ago

8 0

You are expected to remember and make use of the fact that adjacent angles in a parallelogram are supplementary. That means ...
(2x -10) +(5x +15) = 180
7x +5 = 180 . . . . . . . . . . . collect terms
7x = 175 . . . . . . . . . . . . . . add -5. To find x, divide by 7.
x = 25 . . . . . . . . the answer to the question

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Paul [167]

I’m not 100% sure but I think it’s y=5x+20

8 0

3 years ago

If a car has tires with a diameter of 28 inches and is traveling at 55 mph, how fast are its tires spinning, in rpm^ prime s (re

Aleksandr-060686 [28]

Answer:

The tires are spinning at 660.49 revolutions per minute.

Step-by-step explanation:

The speed of the tires (v) is the same that the speed of the car, so to find the angular velocity of the tires we need to use the equation:

$\omega = \frac{v}{r}$

Where:

r: is the radius of the tires = d/2 = 28 inches/2 = 14 inches

$\omega = \frac{55 mph}{14 inches*\frac{1 mile}{63360 inches}} = 2.49 \cdot 10^{5} \frac{rad}{h}*\frac{1 h}{60 min}*\frac{1 rev}{2\pi rad} = 660.49 rpm$

Therefore, the tires are spinning at 660.49 revolutions per minute.

I hope it helps you!

5 0

3 years ago

Please help, test review. Need done today

ANTONII [103]

D=number of drinks
p=number of bags of popcorn

75=6d+8p
100.50=12d+10p

multiply first equation by -2 and add to first
-49.50=-6p
divide -6
8.25=p
sub

100.50=12d+10p
100.50=12d+82.50
minus 82.50
18=12d
divide 12
1.50=d

$1.50 per drink

YOU BETTER READ AND LEARN AND NOT JUST USE THIS TO PASS, LEARN

7 0

4 years ago

Find the height of a cylinder with a volume of 12157 mm3 and a radius of 9 mm.

Ivahew [28]

Volume of a Cylinder = pi * r^2 * h

V / (pi*r^2) = h

12157 / (pi * 9^2) = h = 47.774

5 0

3 years ago

What is the completely factored form of f(x)=x3+5x2+16x+80 ?

saw5 [17]

Answer: