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3 years ago

Sheila nuns 8 miles on Saturday, 3

Mathematics

2 answers:

Bond [772]3 years ago

4 0

The answer is 3.2 miles

Korvikt [17]3 years ago

3 0

Answer:

3.2 miles on average.

Step-by-step explanation: Because you must add all those miles together then divide by 7 to represent weeks. Plus Sheila forgot Monday.

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suppose that you have 75$ in your savings account and you save an additional 5$ per week. your friend has 30$ in his savings acc

ivanzaharov [21]

Answer:

12 weeks

Step-by-step explanation:

your account

75 total

5 a week to add in

friend account

30 total

10 a week to add in

you need to first recognize that the friend might have a lower balance but he will be adding in double a week compared to you.

it will take him it will take you

starting 30 75

week 1 40 80

week 2 50 85

week 3 60 90

week 4 70 95

week 5 80 100

week 9 90 105

week 10 100 110

week 11 110 115

week 12 120 120

6 0

3 years ago

8. Anthony and Yareli's combined driving distance this week was 60 miles. Yareli drove 4 times as far as Anthony. How

NeX [460]

You divide 60 and 4. And you get the answer

8 0

3 years ago

Read 2 more answers

Emilio borrows $1200 from a bank with 8% simple interest per year. How much will he have to pay back total in 2 years?

Vinil7 [7]

Answer:

Step-by-step explanation:

1200÷2=600

8 0

3 years ago

A distribution of scores for a test of life stressors has a mean of µ = 125 and standard deviation of σ = 15. The researcher cal

laila [671]

Answer:

The mean and standard deviation for the z-scores in this distribution are 0 and 1 respectively.

Step-by-step explanation:

Let the random variable X follow a Normal distribution with mean μ and standard deviation σ.

The z-scores are standardized form of the raw scores X. It is computed by subtracting the mean (μ) from the raw score x and dividing the result by the standard deviation (σ).

$z=\frac{x-\mu}{\sigma}$

These z-scores also follow a normal distribution.

The mean is:

$E(z)=E[\frac{x-\mu}{\sigma} ]=\frac{1}{\sigma}\times [E(x)-\mu] =\frac{1}{\sigma}\times [\mu-\mu]=0$

The standard deviation is:

$Var(z)=Var[\frac{x-\mu}{\sigma} ]=\frac{1}{\sigma^{2}}\times [Var(x)-Var(\mu)] =\frac{\sigma^{2}-0}{\sigma^{2}}=1\\SD(z)=\sqrt{Var(z)}=1$

Thus, the mean and standard deviation for the z-scores in this distribution are 0 and 1 respectively.

8 0

3 years ago

Write the equation of the line in slope-intercept form that has: slope: 3 point: (0,2)

goldenfox [79]

Answer:

y=3x+2

Step-by-step explanation:

y=mx+b

we have m here so

y=3x+b

then the 2 is the y-intercept

y=3x+2

7 0

3 years ago