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Inga [223]
3 years ago
14

Find the value of x. *

Mathematics
1 answer:
Ludmilka [50]3 years ago
6 0

Answer:

13x + 7 + 4x + 15 = 90

17x + 22 = 90

17x = 68

x = 4

4(4) + 15= 16 + 15= 31

13(4) + 7 = 52 + 7 = 59

Step-by-step explanation:

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The expected value of a random variable is the
alekssr [168]

Answer:

The expected value of random variable X is often written as E(X) or µ or µX.

Step-by-step explanation:The expected value is the 'long-run mean' in the sense that, if as more and more values of the random variable were collected (by sampling or by repeated trials of a probability activity), the sample mean becomes closer to the expected value.

6 0
3 years ago
New tablets are on sale for 40% off. They're
Morgarella [4.7K]

Answer:

$89.7

Step-by-step explanation:

First, find the 40% of 149.5, which is 59.8. Then, subtract the percentage (59.8) from 149.5 which equals 89.7.

So it is $89.7 dollars when it is 40% off.

HOPE THIS HELPS!!!!

BEST OF LUCK!!!

8 0
3 years ago
the fastest elevators in the Burj Khalifa can travel 330 feet in just 10 seconds how far does the elevator travel in 11 seconds
larisa [96]

Answer:

363 feet

Step-by-step explanation:

The ratio of feet traveled per second is 33. You can find this by diving the original feet given by the time given. 330 divided by 10 is 33. So now you know how many feet is traveled in only a second of time. Qith this information, you can mutliply your ratio by 11 to find the feet traveled in 11 seconds. 33 times 11 is 363. Hope this helps :))

8 0
3 years ago
Can someone help me, please???
jasenka [17]
What are you even supposed to do
5 0
3 years ago
Write an equation in slope-intercept form for the line containing the giving points (10,2) (2,-2)
zysi [14]

(y - yo) = m.(x - xo)

(-2 - 2) = m.(2 - 10)

-4 = m.(-8)

m = -4/-8

m = 1/2

(y - yo) = 1/2.(x - xo)

(y - 2) = 1/2.(x - 10)

y - 2 = 1/2x - 5

y = 1/2x - 5 + 2

y = 1/2x - 3

7 0
3 years ago
Read 2 more answers
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