3 years ago

If 18 is 45% of a value, what is that value?

Mathematics

1 answer:

Andrew [12]3 years ago

6 0

Answer:

it is 40 :)))

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Subtract.

mixas84 [53]

9514 1404 393

Answer:

17 -4i

Step-by-step explanation:

You do this the same way you would if i were a variable.

8-(-4+5i)-(-5-i) = 8 +4 -5i +5 +i = (8 +4 +5) +(-5i +i) = 17 -4i

7 0

3 years ago

Enter the value for x that makes the equation √x-7=-4

Agata [3.3K]

Answer:

Your answer is 9

Step-by-step explanation:

√9=3

3-7=-4

4 0

3 years ago

7. Judy and Steve collect baseball cards. Judy has six less than twice the

Harman [31]

Answer:

c. 2n-6

Step-by-step explanation:

6 less than 2xSteve so 2n-6

8 0

3 years ago

Evaluate 5|x^3 - 2| + 7 when x = -2

Dafna1 [17]

Answer:

Step-by-step explanation:

5 |-2^3 - 2| + 7

-2^3 = -8

-8 - 2 = -10

absolute value of -10 = 10

5 * 10 = 50

50 + 7 = 57

7 0

3 years ago

Read 2 more answers

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