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ololo11 [35]
2 years ago
12

How do you solve 5(r+9)−2(1−r)=1 need quickly

Mathematics
1 answer:
RUDIKE [14]2 years ago
5 0

Answer:

r=   -6

Step-by-step explanation:

expand and get

5r+45-2+2r=1

7r+43=1

7r=1-43

7r=-42

r=-6

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20 \times 7 = 140
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8 0
4 years ago
Read 2 more answers
The time required to complete a project is normally distributed with a mean of 80 weeks and a standard deviation of 10 weeks. Th
matrenka [14]

Answer: the due date would be 92 weeks

Step-by-step explanation:

Since the time required to complete a project is normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = number of weeks.

µ = mean

σ = standard deviation

From the information given,

µ = 80 weeks

σ = 10 weeks

If a construction company bidding on this contract wishes to be 90 percent sure of finishing by the due date, the z score corresponding to 90%(90/100 = 0.9) is 1.29

Therefore,

1.29 = (x - 80)/10

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5 0
3 years ago
The solution set of the quadratic inequality x squared minus 5 x plus 4 less or equal than 0 is
BigorU [14]

Answer:

it is equal to 0

7 0
3 years ago
Plsss help me with this question!! Will mark best answer brainiest!!
timofeeve [1]

Answer:

45

Step-by-step explanation:

45+45=90

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So if ABE is 90 degrees, then ABE (90) minus DBE(45) = ABD(45 degrees)

Hope you have a great day friend! <3

6 0
3 years ago
Simplify sqrt(p^2) Please solve this. I will give whoever solves this points.
Simora [160]

It's a bit of a trick question.  The principal square root of a real number, as indicated by the radical sign, is never negative. So if p is negative we'll get -p as the result.  We write this with absolute value:

\sqrt{p^2} = |p|

3 0
3 years ago
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