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slavikrds [6]
3 years ago
7

Find the value of M

Mathematics
1 answer:
Aleksandr [31]3 years ago
3 0

Answer:

∠ABC=52

Step-by-step explanation:

(5x-22)+(4x+4)=90

9x-18=90

x-2=10

x=12

12*4+4=52

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What is the total amount of 2/5+5/3+9/3 and the lowest common denominator?
gregori [183]

The lowest common denominator is lcm(5, 3), which is 15.

The sum of 2/5 + 5/3 + 9/3 is 6/15 + 25/15 + 45/15, which is 76/15 or 5\frac{1}{15}.

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
Quadrilateral ABCD is a square.<br> BC = 10<br> What is the length of AC?
aliya0001 [1]
All four sides of a square are equal.

So if BC is 10, then AC is also 10.
4 0
3 years ago
Read 2 more answers
Mary has to spend $18000 on expenses each year.if that amount of money 40% of her salary then how much does Mary make working as
Naddik [55]

Answer:

40% × ? = 18,000

? =

18,000 ÷ 40% =

18,000 ÷ (40 ÷ 100) =

(100 × 18,000) ÷ 40 =

1,800,000 ÷ 40 =

45,000


4 0
3 years ago
Please help!<br><br> Thank you!
Ne4ueva [31]
Answer: 25a²b⁴c⁶
Hope this helps
5 0
2 years ago
Read 2 more answers
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