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1 year ago

14

Samuel scored a 72, 92 and 80 on his first three exams. What is the minimum score he needs to get on his exam to get an average

of 85?

1 answer:

sattari [20]1 year ago

4 0

Samuel would need to score a minimum of 96 on his 4th exam

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The grocery store where Ms. Maple works pays her $6.50 per hour. Any time she works more than 40 hours per week, she is paid tim

Charra [1.4K]

Answer:

$289.25

Step-by-step explanation:

First we should find out how much Ms. Maple would make in a week without overtime.

6.5 x 40 = 260

Now, let's figure out how much she makes per hour in overtime.

6.5 x 1.5 = 9.75

Now add up the hours of overtime.

9.75 x 3 = 29.25

Now we add the weekly wage to the overtime

260 + 29.25 = 289.25

For 40 hours of regular time at $6.50/hr and 3 hours of overtime at $9.75/hr, Ms. Maple will make $289.25 for the week.

7 0

3 years ago

Find the solution(s) to the system of equations represented in the graph.

jolli1 [7]

Answer:

(-3,0) and (0,3)

Step-by-step explanation:

The solution to the system of equation is where the two graphs intersect

The intersect at two points

(-3,0) and (0,3)

3 0

3 years ago

A principal believes 50% of her music students reported their practice hours accurately. Based on that assumption, she ran 200 s

Alex17521 [72]

Answer:

C. unlikely

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

A probability is said to be extremely likely if it is 95% or higher, and extremely unlikely if it is 5% or lower. A probabilty higher than 50% and lower than 95% is said to be likely, and higher than 5% and lower than 50% is said to be unlikely.

In this problem, we have that:

$\mu = 0.48, \sigma = 0.18$

How likely is it that a single survey would return a mean of 30%?

We have to find the pvalue of Z when X = 0.30.

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0.30 - 0.48}{0.18}$

$Z = -1$

$Z = -1$ has a pvalue of 0.1587.

So the correct answer is:

C. unlikely

4 0

3 years ago

Simplify (2+3)^2+8/2

kkurt [141]

Answer:

Exact Form: − 29 30 Decimal Form: − 0.9 ¯ 6

Hoped I helped

8 0

3 years ago

The city of Paris, France, is completely contained within an almost circular road that goes around the edge. The radius of Paris

Firdavs [7]

Answer:

Area of Paris is approximately 28.26 square miles.

Step-by-step explanation:

Given:

Radius of Paris = 3 miles

We need to find the approximate area of Paris.

Also Given:

City of Paris has an almost circular road that goes around the edge.

hence Considering it as Circle we will find the area of circle.

Area of Circle is equal to π times square of the radius.

Framing it in equation form we get;

area of Paris = $\pi r^2$

Substituting the value of radius we get;

Area of Paris = $\pi \times r^2 = 3.14 \times3^2 = 28.26 \ miles^2$

Hence Area of Paris is approximately 28.26 square miles.

5 0

3 years ago