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kramer
3 years ago
7

 Find the perimeter. Simplify the answer

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
6 0
Add the sides and then combine like terms and solve it the answer should be 30s-18
stira [4]3 years ago
5 0

3s - 1 + 7s - 1 + 10s - 8 + 10s - 8 \\ 10s - 2 + 20s - 16 \\  = 30s - 18

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Macy bought some records. She spent a total of $45 after a discount of $11 off of her total purchase. Each record cost $8. How m
Rzqust [24]

Answer:

7 records. and the answer would be 8r-11=45

7 0
3 years ago
Is -7 + 9= 9 + 7 true, false or open
True [87]
That's false -7+9=2 and 7+9=18
5 0
3 years ago
Read 2 more answers
If anyone knows how to do this
iogann1982 [59]

Answer:

1) 47

2) 4

Step-by-step explanation:

Complimentary = 90 degrees

1) 43 + ? = 90

? = 47

2) 86 + ? = 90

? = 4

8 0
3 years ago
You have just used the network planning model and found the critical path length is 30 days and the variance of the critical pat
joja [24]

Answer:

0.726 is the probability that the project will be completed in 33 days or less.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 30 days

Variance = 25 days

Standard Deviation,

\sigma = \sqrt{\text{Variance}} = \sqrt{25} = 5

We assume that the distribution of path length is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(completed in 33 days or less)

P( x \leq 33) = P( z \leq \displaystyle\frac{33 - 30}{5}) = P(z \leq 0.6)

Calculation the value from standard normal z table, we have,  

P(x \leq 33) = 0.726 = 72.6\%

0.726 is the probability that the project will be completed in 33 days or less.

8 0
3 years ago
Choose the correct trig ratio you would use to solve for the missing piece of the right triangle.
arlik [135]

Answer:

take 19 degree as reference angle

using sine rule

sin 19 degree=x/74

0.32=x/74

0.32*74=x

23.68=x

Step-by-step explanation:

Hope this helps u !!

8 0
3 years ago
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