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shepuryov [24]
3 years ago
13

What is the value of x?

Mathematics
2 answers:
user100 [1]3 years ago
7 0

Answer:

1/2

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable

Inga [223]3 years ago
3 0

Answer: x = 1/2

Step-by-step explanation too lazy to write that

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In any difference 6th grade class the ratio of boys and two girls is 3:2 how many boys and how many girls could there be in one
Artemon [7]
Yes there can be more than one answer because it can go on forever
3 to 2
6 to 4
9 to 6
12 to 8
it can go on forever
4 0
3 years ago
Twenty five heat lamps are connected in a greenhouse so, that when one lamp fails, another takes over immediately (only one lamp
olga55 [171]

Answer:

P = 0.006

Step-by-step explanation:

Given

n = 25 Lamps

each with mean lifetime of 50 hours and standard deviation (SD) of 4 hours

Find probability that the lamp will be burning at end of 1300 hours period.

As we are not given that exact lamp, it means we have to find the probability where any of the lamp burning at the end of 1300 hours, So we have

Suppose i represents lamps

P (∑i from 1 to 25 (X_i > 1300)) = 1300

= P(X^{'}> \frac{1300}{25})                  where X^{'} represents mean time of a single lamp

= P (Z> \frac{52-50}{\frac{1}{\sqrt{25}}})                Z is the standard normal distribution which can be found by using the formula

Z = Mean Time (X^{'}) - Life time of each Lamp (50 hours)/ (SD/\sqrt{n})

Z = (52-50)/(4/\sqrt{25}) = 2.5

Now, P(Z>2.5) = 0.006 using the standard normal distribution table

Probability that a lamp will be burning at the end of 1300 hours period is 0.006

4 0
3 years ago
9 9/15 - 2 13/15 = <br> i have know idea what it is plz help
maria [59]

Step-by-step explanation:

plase see it my step work solution

5 0
3 years ago
Find the product -7(-a2)(-b3)
vlada-n [284]
-7(-a^2)(-b^3)=\boxed{-7a^2b^3}
7 0
3 years ago
A rectangle on a coordinate plane is translated 5 units up and 3 units to the left. Which rule describes the
german

Answer:

A rectangle on a coordinate plane is translated 5 units up and 3 units to the left.

3) O(x,y)=(x-3,y+5)

6 0
3 years ago
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