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slega [8]
3 years ago
7

Y is directly related to x and y is 81 when x is 27 the constant of.variation is

Mathematics
1 answer:
suter [353]3 years ago
6 0

Answer:

The constant of variation is 3

Step-by-step explanation:

Given.

y=81

x=27

And y is directly related to x

y ∝ x

Here k is constant of variation

y=kx

k=\frac{y}{x}--------------(1)

Put the y and x value in equation 1.

k=\frac{81}{27}

k=3

So, the constant of variation is 3.

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What is tan angle QTR if line PR is tangent to circle T at Q, and TS = 1 cm?
lions [1.4K]
Tangent = opposite / adjacent

In the diagram:
TQ is the short leg or the opposite
QR is the long leg or the adjacent
TR is the hypotenuse. TS is part of the hypotenuse.

Tan(QTR) = TQ / QR

TS = 1 ; TQ = TS  so, TQ = 1

Tan(QTR) = 1/QR

I think the answer is C.RQ
3 0
3 years ago
Write the multiple of the first even number from 11 to 20​
andrew-mc [135]

Answer:

Multiples [10] - 10, 20, 30, 40, 50

Multiples [11] - 11, 22, 33, 44, and 55

<u><em>Find the Even numbers of these multiples</em></u>

Multiples [10]

  • - 10 = Even
  • - 20 = Even
  • - 30 = Not Even
  • - 40 = Even
  • - 50 = Not Even

  1. <u><em>10 × 1 = 10</em></u>
  2. <u><em>10 × 2 = 20</em></u>
  3. <u><em>10 × 3 = 30</em></u>
  4. <u><em>10 × 4 = 40</em></u>
  5. <u><em>10 × 5 = 50</em></u>

Multiples [11]

  • - 11 = Not Even
  • - 22 = Even
  • - 33 = Not Even
  • - 44 = Even
  • - 55 =  Not Even

  1. <u><em>    11 × 1 = 11</em></u>
  2. <u><em>    11 × 2 = 22</em></u>
  3. <u><em>    11 × 3 = 33</em></u>
  4. <u><em>    11 × 4 = 44</em></u>
  5. <u><em>    11 × 5 = 55</em></u>
  6. <u><em>    11 × 6 = 66</em></u>
  7. <u><em>    11 × 7 = 77</em></u>
  8. <u><em>    11 × 8 = 88</em></u>
  9. <u><em>    11 × 9 = 99</em></u>

Step-by-step explanation:

.... I messed up, sorry. I thought that 20 said 11

8 0
2 years ago
What is the solution to this system of equations?
mixas84 [53]

Answer:

(-2,4)

Step-by-step explanation:

The solution is the point at which the two lines intersect, (-2,4).  That point is the only one that satisfies (works) in both equations:

y = x + 6

4 = -2 + 6

and

y = -0.5x + 3

4 = -0.5(-2) + 3

4 = 1 + 3

====

You can also solve it algebraically:

y = x + 6

y = -0.5x + 3

-0.5x + 3 = x + 6   [Use the value of y from the second equation in the first equation]

-1.5x = 3

x = -2

Use this is y = -2 + 6:

y = 4

(-2,4)

5 0
2 years ago
Do any of y'all know how to do this I'm so confused and I need help ​plz show ur work btw
uranmaximum [27]

Answer:

I don't know the answer to the first one, but the second one's answer is 8.625

Step-by-step explanation:

1.5*2.5 + 1.5*2.5 + (1.5*1/5)/2 = 3.75 + 3.75 + 2.25/2 =

7.5 + 1.125 = 8.625

4 0
3 years ago
What precent of 44 is 11 <br><br>helllllllllllllllllllllllllllllllllllllllllllllllllllllllllp<br>plz
olganol [36]

Answer:

25.

Step-by-step explanation:

44:11*100 = 25

5 0
3 years ago
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