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3 years ago

6

What is 9+12-4x15+3 divided by 2

1 answer:

STALIN [3.7K]3 years ago

7 0

Answer:

The correct answer is -18

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What is the equation (simplified) the inverse of y=2x^2?

Yuki888 [10]

$2x^2=y\ \ \ |divide\ both\ sides\ by\ 2\\\\x^2=\dfrac{y}{2}\\\\\boxed{x=\sqrt{\frac{y}{2}}}\\\\x=\dfrac{\sqrt{y}}{\sqrt2}=\dfrac{\sqrt{y}\cdot\sqrt2}{\sqrt2\cdot\sqrt2}\to\boxed{x=\dfrac{\sqrt{2y}}{2}}\\\\\\\boxed{f(x)=2x^2\to f^{-1}(x)=\dfrac{\sqrt{2y}}{2}}$

3 0

3 years ago

The circumference of a circle is equal to n times its diameter. Estimate the circumference of a round swimming pool that has a d

sdas [7]

Answer: An estimate done quickly: The circumference is about 75 ft.

Step-by-step explanation:

Round π to 3, and 24 to 25. 3 times 25 is 75

A more exact value would be 75.36

3.14 × 24 = 75.36

5 0

3 years ago

A train leaves Boston at 10:20 AM and arrives in Stamford at 1:00 PM. Find the distance between the stations if the average spee

mina [271]

60 mph = 1 mile per minute
10:20 AM -> 1:00 PM = 2 hours and 40 minutes
2 hours 40 minutes = 160 minutes
Boston -> Stamford = 160 miles

4 0

3 years ago

Solve for x.<br>-3+85-5=-8<br>A. -2.<br>B.-1<br>C.-3/4<br>D.0

posledela

Answer:

-2

Step-by-step explanation:

-3+8x-5=-8

8x = -16

x = -2

5 0

3 years ago

Read 2 more answers

Dr black is standing 20 feet from street lamp lamp shadow is 5 feet long angle from top of his shadown to top of light is 30degr

s344n2d4d5 [400]

Then answer would be

90° < 0 < 180°.

hope it helps!

7 0

3 years ago