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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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Choose which equation(s) demonstrate the Distributive Property:
Butoxors [25]

Hey there! I'm happy to help!

The distributive property is when you multiply a number outside the parentheses by each term inside. We see this demonstrated in answer D) 6n-6=6(n-1).

6(n-1) can be undistributed. 6(n)=6n and 6(-1)=-6, giving us 6n-6, which is still equal to 6(n-1).

Have a wonderful day! :D

7 0
3 years ago
Write and solve a system of equations: Vanessa and Geneva worked together to buy a pair of tickets ($240 total) to the Green Day
Goshia [24]

Answer:

The systems of equation are \left \{ {{v+g=21} \atop {10v+12g=240}} \right..

Vanessa worked for<u> 6 hrs </u>and Geneva worked for <u>15 hrs</u> to earn exactly $240.

Step-by-step explanation:

Let the number of hours worked by Vanessa be 'v'.

Let the number of hours worked by Geneva be 'g'.

Given:

Total number of hours worked = 21 hours

So we can say that;

Total number of hours worked is equal to sum of number of hours worked by Vanessa and number of hours worked by Geneva.

framing in equation form we get;

v+g=21              ⇒ equation 1

Also given:

per hour earnings of Vanessa = $10

per hour earning of Geneva = $12

Total they need to earn = $240

So we can say that;

Total they need to earn would be equal to sum of  per hour earnings of Vanessa multiplied by number of hours worked by Vanessa and per hour earning of Geneva multiplied by number of hours worked by Geneva.

framing in equation form we get;

10v+12g =240     ⇒ equation 2

Hence The systems of equation are \left \{ {{v+g=21} \atop {10v+12g=240}} \right..

On Solving above equations we get;

First we will multiply equation 1 by 10 we get;

10(v+g)=21\times10

10v+10g =210     ⇒ equation 3

Now Subtracting equation 3 from equation 2 we get;

10v+12g -(10v+10g)=240-210\\\\10v+12g-10v-10g=30\\\\2g =15

Dividing both side by 2 we get;

\frac{2g}{2}=\frac{30}{2}\\\\g =15\ hrs

Now Substituting the value of g in equation 1 we get;

v+g=21\\\\v+15=21\\\\v=21-15 =6\ hrs

Hence Vanessa worked for<u> 6 hrs </u>and Geneva worked for <u>15 hrs</u> to earn exactly $240.

7 0
3 years ago
If a net is made of a triangular prism, what shapes contain? How many will there be of each shape?
serg [7]

Answer:

5 shapes, 3 rectangles 2, Triangles

Step-by-step explanation:

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2 years ago
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It is -129/500
I hope this is the answer you are looking for
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The line of the line below is -4 use the coordinates of the labeled point to find a point slope equation of the line(4,-9)
marusya05 [52]

Answer:

c. y + 9 = -4(x - 4)

Step-by-step explanation:

According to the Point-Slope Formula, <em>y - y₁ = m(x - x₁)</em><em>,</em><em> </em>all the negative symbols give the OPPOSITE terms of what they really are, so be EXTREMELY careful.

I am joyous to assist you anytime.

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3 years ago
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