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Slav-nsk [51]
2 years ago
9

Help pls ill gve brainlist <3 or however you spell it

Mathematics
2 answers:
telo118 [61]2 years ago
8 0

Answer:

1) Is 3 for K

2) is 4 for X

3) is 56 for Y

igomit [66]2 years ago
8 0

Answer:

1) k = 3

2) x = 4

3) y = 56

Step-by-step explanation:

1) y ÷ x = k // 21 ÷ 7 = 3

2) 24 ÷ 6 = 4

3) 14 ÷ 2 = 7  |  8 x 7 = 56

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6 0
3 years ago
Read 2 more answers
The radius of the base of a cylinder is increasing at a rate of 777 millimeters per hour. The height of the cylinder is fixed at
Tatiana [17]

Answer:

252<em>π</em>  or 791.7 mm³/h

Step-by-step explanation:

The volume of a cylinder is given by

V = \pi r^2h

We desire to find the volume rate, that is,\dfrac{dV}{dt}

\dfrac{dV}{dt} = \dfrac{dV}{dr}\cdot\dfrac{dr}{dt}

<em>dr/dt</em> is the rate of change of the radius which is 7 mm/h.

<em>dV/dr</em> is derived by differentiating the volume equation, yielding

\dfrac{dV}{dt} = 2\pi rh

At <em>r</em> = 12 mm and <em>h</em> = 1.5 mm,

\dfrac{dV}{dt} = 2\pi\times12\times1.5\times7 = 252\pi = 791.7

5 0
3 years ago
Kayla is running for charity. Her dad pledges to give her $0.50 per mile she runs. Her mom pledges to give her a flat donation o
amm1812

Answer:

  10 miles

Step-by-step explanation:

Let m represent the number of miles Kayla runs. We want to find m such that ...

  0.50m = 5.00

Divide by the coefficient of m:

  m = 5.00/0.50 = 10

Kayla has to run 10 miles to get the same donation from both parents.

5 0
3 years ago
Tina buys a briefcase online for 62.95. If shipping and handling are an additional 20% of the price, how much shipping and handl
Alexxandr [17]

Answer:

Tina will pay $12.95 for shipping and handling.

Step-by-step explanation:

Because you literally just have to multiply $62.95 by .2 and you have your answer.

4 0
2 years ago
Select all ratios equivalent to 10:2.
Butoxors [25]

Answer:

5:1

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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