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VladimirAG [237]
3 years ago
14

The scores on a math ema tics exam have a mean of 76 and a standard deviation of 7. Find the X-value that corresponds to the Z-s

core 2.942.​
Mathematics
1 answer:
Zina [86]3 years ago
3 0

Answer:

ersdf

Step-by-step explanation:

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The volume of a cube whose edge is 3x, is​
diamong [38]

Answer:

27 { x}^{3}

Step-by-step explanation:

s represents one side of the cube

Volume of cube= (s)^3

= (3x)^3

= 27x^3

6 0
3 years ago
Emily has 8 coins in her purse totaling 50 cents. The only kinds of coins she has are nickels and dimes. How many nickels does E
makvit [3.9K]
5x + 10y = 50
x + y = 8

x = 8 - y
5*(8-y) + 10y = 50
40 - 5y + 10y = 50
10y - 5y = 50 - 40
5y = 10
y = 2

x + y = 8
x + 2 = 8
x = 8 - 2
x = 6

She has 6 nickels and 2 dimes
3 0
3 years ago
Read 2 more answers
Round 4.645 to the nearest whole number! Please explain step by step to get marked
Gemiola [76]

Step-by-step explanation:

to round 4.645 to the nearest whole number consider the tenths’ value of 4.645, which is 6 and equal or more than 5. Therefore, we have to round up: the whole number part of 4.645, 4, increases by 1 to 5, and the decimal point and all digits (.645) are removed.

4.645 rounded to the nearest whole number = 5

5 0
2 years ago
Can anyone help solve this?
Mashcka [7]

Answer:

12.2

Step-by-step explanation

The triangles are congruent, so the sides are as well. Add 6.1 and 6.1 and you will get 12.2

5 0
3 years ago
A patrolman spends three times as many hours patrolling as she does completing paper work. If she works 36 hours per week, how m
fomenos

Answer:

27 hours

Step-by-step explanation:

Let her work "x" hours for paperwork

Since, patrolling amount of hours is THREE TIMES that,

Patrolling = 3x hours

Total Hours = 36

That is including paperhour work (x) and patrolling (3x). So we can setup an equation in x and solve for x first:

x + 3x = 36

4x = 36

x = 36/4

x = 9 hours

Amount of Hours for Patarolling = 3x hours = 3(9) = 27 hours

So, she spends 27 hours patrolling

4 0
3 years ago
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