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ZanzabumX [31]
3 years ago
15

A sample of n = 9 scores is obtained from a population with m = 70 and s = 18. if the sample mean is m = 76, then what is the z-

score for the sample mean?
Mathematics
1 answer:
mr Goodwill [35]3 years ago
8 0
N times m equals the correcr answrr

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Which represents the solution set of 5(x+5) < 85?
Maru [420]

Answer:

\Huge \boxed{X

Step-by-step explanation:

To solve this problem, first you have to isolate it on one side of the equation. Remember to solve this problem, find represents the solution of 5(x+5)<85.

First, you divide by 5 from both sides.

\displaystyle \frac{5(x+5)}{5}

Solve.

\displaystyle 85\div5=17

\displaystyle x+5

Next, subtract 5 from both sides.

\displaystyle x+5-5

Solve.

\displaystyle 17-5=12

As a result, the correct answer is x<12.

<h2>Hope this helps! </h2><h2 /><h2>Have a wonderful blessing day! :)</h2><h2 /><h2>Good luck! :)</h2>
3 0
3 years ago
Sarah biked the same distance each day for 6 days. If she traveled 468 kilometers altogether, how many kilometers did she travel
I am Lyosha [343]
76 kilometers per day.

Step by step

468 divided by 6 = 76

76•6=468
8 0
3 years ago
Can somebody help me on this thank you it will mean a lot
MaRussiya [10]

Answer:

your will be A

Step-by-step explanation:

hoped i helped and can i get brainiest pls

5 0
3 years ago
A small business produces and sells balls. The fixed costs are $20 and each ball costs $4.32 to produce. Each ball sells for $8.
Gemiola [76]

Part 1:

Fixed Cost, f = $20

number of balls = n

Cost of each ball, c = 4.32

Price of each ball, p = 8.32

Equation for total cost:

Total Cost of balls will come by adding the cost of all balls and the fixed cost

Total Cost = number of balls made × Cost of each ball + fixed cost

<em>C = 4.32n + 20</em>

Equation for revenue:

Revenue  = Number of balls made × price of each ball

<em>R =  8.32n </em>

Part 2:

Use the graphing method to determine how many balls must be sold to break even

Breakeven means Revenue =  total Cost

This happens at a point (5,41.6) where n = 5 is the number of balls sold

and C = 41.6 is the total cost

When 5 balls are sold there will be breakeven

R = 4n - 20  

C = 4.32n + 20

Red line represent Cost

Black line represent Revenue

5 0
3 years ago
A model car is 3 3/4 inches long.using a scale of 1/2 inch=2 feet,find the actual length of the car
MaRussiya [10]

Answer:

14.25 because for every 1/2 inch, the car is 2 feet.

Step-by-step explanation:

8 0
3 years ago
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