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vivado [14]
3 years ago
5

Assume that y varies directly with x. If y = -15 when x = -5, find y when x = 3.

Mathematics
1 answer:
____ [38]3 years ago
5 0

Answer: Y = 9

Step-by-step explanation:

Y & X

Y = KX

K = Y / X = - 15 / - 5 = 3

X = 3

K= 3

Y=?

Y = KX = 3 x 3 = 9

Therefore, when X = 3, Y = 9

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The volume of a cone =13πr2h
xz_007 [3.2K]

Answer:

Volume of cone = 418.67 cm³ (Approx.)

Step-by-step explanation:

Given:

Radius of cone = 5 cm

Height of cone = 16 cm

Find:

Volume of cone

Computation:

Volume of cone = [1/3][π][r²][h]

Volume of cone = [1/3][3.14][5²][16]

Volume of cone = [1/3][3.14][25][16]

Volume of cone = [1/3][3.14][400]

Volume of cone = [1/3][1,256]

Volume of cone = 418.67 cm³ (Approx.)

8 0
2 years ago
Anybody want to role play ???
Afina-wow [57]

Answer:

Thats smarttt

Step-by-step explanation:

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8 0
3 years ago
What is the first step when solving the following inequality x+2/-5<4? Group of answer choices A. Add 5 to both sides and DO
LiRa [457]

Assuming we're dealing with \frac{x+2}{-5} < 4, which is the same as writing (x+2)/(-5) < 4, then the answer is choice C.

We multiply both sides by -5 and this will flip the inequality sign.

-------------------------------------

Multiplying or dividing both sides by a negative number flips the inequality sign.

An example would be saying -2x < 10 leads to x > -5

What we can do is divide both sides by -2 and flip the inequality sign, or we could follow the steps shown below

  • -2x < 10
  • 0 < 10+2x ... adding 2x to both sides
  • -10 < 2x ... subtracting 10 from both sides; this is one way to see why the sign flip happens
  • 2x > -10
  • x > -10/2 ..... dividing both sides by 2
  • x > -5
4 0
2 years ago
70% in the SIMPLEST Form​
masya89 [10]

Answer:

7/100

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator

GCD of 70 and 100 is 10

Divide both the numerator and denominator by the GCD

70 ÷ 10

100 ÷ 10

Reduced fraction:

7

10

Therefore, 70/100 simplified to lowest terms is 7/10.

4 0
3 years ago
This function can be used to determine the number of bacteria in a culture h hours after the culture was started.
dimulka [17.4K]

Answer:

The statement means that after 2 hours, there are 90 bacteria in the culture.

Step-by-step explanation:

The number of bacteria after x hours is given by the function states in the exercise. We have that f(x) will be the number of bacteria after x hours.

Which statement best describes the meaning of the equation f(2) = 90 ?

The statement means that after 2 hours, there are 90 bacteria in the culture.

3 0
3 years ago
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