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alexgriva [62]
3 years ago
8

Which of the following statements correctly compares the median and range of their scores?

Mathematics
1 answer:
Nesterboy [21]3 years ago
5 0

Answer:

B

Step-by-step explanation:

because it’s not A, C, and D

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How do you solve these two equations? Please Help!!<br>y = 2x + 160 <br>y = - 3x + 208
Archy [21]
Their are 2 main methods of solving 2 equations with 2 variables:
1) SUBSTITUTION
2) ELIMINATION
I'll show you both:

1) y = 2x + 160
y = - 3x + 208
plug what y is equal to in 1st equation into the y of the 2nd:
2x + 160 = -3x + 208
2x + 3x + 160 = -3x + 3x + 208
5x + 160 -160 = 208 - 160
5x = 48
5x/5 = 48/5
x = 48/5 = 9 3/5
now plug that x into either one of the original equations: y = -3x + 208 = -3(48/5) + 208
y = -144/5 + 208 = 1040/5 - 144/5 = 896/5
y = 179 1/5

2) add the whole equations together so as to cancel out one of the variables:
I'm choosing to eliminate the y, so we need y-y to remove the y's, I'll multiply the whole 2nd equation by -1 to make that -y
-1 (y = - 3x + 208)
-y = 3x - 208
So set it up like:
y = 2x + 160
-[y = 3x - 208]
---------------------
0 = 5x - 48
0+48 = 5x -48 +48
5x = 48
5x/5 = 48/5
x = 48/5
plug that x value into one of the original equations: y = 2x + 160 = 2(48/5) + 160
y = 96/5 + 160 = 96/5 + 800/5 = 896/5
y = 179 1/5

SO WE GOT THE SAME VALUES BOTH WAYS.
WHEN YOU SEE FUTURE PROBLEMS LIKE THESE, SOME WILL BE QUICKER BY ELIMINATION AND OTHERS BY SUBSTITUTION

6 0
3 years ago
What is the mass of a 3 cm cube of pine? (Reminder: The length, width, and height of a cube are all the same.)
ryzh [129]

Answer:Using this idea, you can calculate the mass of a cube with the formula for Density = mass ÷ volume. Review the formula for density: Density = mass ÷ volume. If you solve this equation for mass, it becomes: mass = density x volume.

Step-by-step explanation:Hope this help u

7 0
3 years ago
Drag the colon to the correct spot in the sentence.
Maslowich
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3 years ago
Read 2 more answers
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stepladder [879]
Calvinism - the Protestant theological system of John Calvin and his successors, which develops Luther's doctrine of justification by faith alone and emphasizes the grace of God and the doctrine of predestination.

Answer: Predestination
8 0
3 years ago
A scale drawing of a rectangular painting has a scale factor of 1:4 which statements are true
vovikov84 [41]

Answer:

object have been reduced by a factor of 4 on paper or the drawing have been increased by a factor of 4 on land .

Step-by-step explanation:

What a scale factor of 1:4 means.

Simply it means that the reals size of the object on land have been reduced in the drawing in the paper.

Now for scale factor of 1:4 in particular it means that the object have been reduced by a factor of 4 on paper or the drawing have been increased by a factor of 4 on land .

Example if the drawing has measurements of 4 inches on paper, then on land it will be 16 inches

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