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vfiekz [6]
3 years ago
15

9. If y = kx, where k is a constant, and y = -3 when x = 6, what is the value of x when y = 12?

Mathematics
2 answers:
____ [38]3 years ago
6 0

Answer:

x would be -24

Step-by-step explanation:

since k is a constant, we have to find out what k is from the equation

. -3=6(k) divide both sides by 6 to get that k is -0.5/-1/2.

then, solve for what x is when y is 12 by setting up the equation 12=(-0.5)x. this would result in x being -24

NemiM [27]3 years ago
4 0

Hey there! :)

Answer:

x = -24.

Step-by-step explanation:

Plug in the values to find the value of 'k':

-3 = k(6)

Divide both sides by 6 to solve for 'k':

-3/6 = k

k = -1/2

Plug this into the equation to solve for the value of x when y= 12:

12 = -1/2(x)

Divide both sides by -1/2:

-24 = x

x = -24.

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A plane traveled from California and back. It took one hour longer on the way out than it did on the way back. The plane's avera
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Answer:

Option D is the correct answer.

Step-by-step explanation:

Let x be the one way distance and t be the time out.

Time taken for back = t-1

We have plane's average speed out was 300 mph and average speed on the way back was 350 mph.

That is

           \frac{x}{300}=t\texttt{ and }\frac{x}{350}=t-1

Dividing both equations

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5 0
4 years ago
Read 2 more answers
Please help!!<br>solve for x
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Answer:

4

Step-by-step explanation:

These both angles are vertically opposite angles. And, vertically opposite angles are equal. So,

→ 5x ― 6 = 3x + 2

→ 5x ― 3x = 2 + 6

→ 2x = 8

→ x = 8/2

→ x = 4

<u>Therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>value</u><u> </u><u>of</u><u> </u><u>x</u><u> </u><u>is</u><u> </u><u>4</u><u>.</u>

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a card player selects a playing card from a well-shuffled deck of standard playing cards and sees if the card is a red card or n
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As given in the question,

Number of cards are unknown.

Number of red cards are unknown in the starting of experiment.

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For binomial random variable number of red cards should be known.

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