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valentinak56 [21]

3 years ago

13

a student studies the same amount of time each day for a test in 4 days she studied 60 minutes which equation shows this relatio

nship let x = the number of days

1 answer:

Keith_Richards [23]3 years ago

8 0

Y=mx
m=amount of time per day studied
y=time
x=number of days
we have
60=m(4)
divide by 4
15=m

y=15x

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Step-by-step explanation:

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Suppose the mean SAT verbal score is 525 with a standard deviation of 100, while the mean SAT math score is 575 with a standard

Ipatiy [6.2K]

Answer:

The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.

Step-by-step explanation:

Normal variables

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In this question:

Verbal: $\mu_{V} = 525, \sigma_{V} = 100$ .

Math: $\mu_{M} = 575, \sigma_{M} = 100$

Combined:

$\mu = \mu_{V} + \mu_{M} = 525 + 575 = 1100$

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The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.

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