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olchik [2.2K]
3 years ago
7

Q3: Explain how to use proportional relationships to solve multi-step percent problems.

Mathematics
1 answer:
Makovka662 [10]3 years ago
6 0
It is 3 steps so first explain then do the steps then solve
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A bus traveled 300 miles in 6 hours. How many miles would the bus travel in 1 hour?
Oksi-84 [34.3K]
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3 years ago
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The final scores of students in a graduate course are distributed normally with a mean of 72 and a standard deviation of 5. What
Tcecarenko [31]

Answer:

0.8041

Step-by-step explanation:

We know that  

μ=72  and  σ=5

and P(65<X<78)

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P( 65<X<78 )=P( 65-72< X-μ<78-72)

P((65-72)/5

P(65

To fine the Z values:

P (-1.4

From the standard normal tables:

P (Z

to find P ( Z<-1.4)

P ( Z

From the standard normal tables:

P ( Z

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P(-1.4

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Tim is building a bridge for his model railroad. He has 3 sections to fit together to fit together form the bridge span. The pie
Sergio [31]
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5 0
3 years ago
a plane flew a total of 2220 miles it is average speed was 55 miles per hour how many hours did the plane fly
raketka [301]

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Please complete z2+9z-90=(z-6)(z+?) ...?
notka56 [123]
The answer is:  (z - 6)(z + 15)

z² + 9z - 90 = z*z + 15z - 6z - 6*15 =
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4 0
3 years ago
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