MATHEMATICS MIDDLE SCHOOL

3.What is the capacity of the cube in milliliters?



A.
18 mL

B.
72 mL

C.
60 mL

D.
216 mL
...................................................
the lenth width and heidth are 6cm

Answers

Answer 1
Answer: 6 x 6 x 6 = 216. thus, the answer is **D**

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What type of correlation is shown in the scatter plot? A.
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B.
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C.
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Answers

A. positive correlation because even though it looks pretty scattered, in most cases the GPA is higher when the hours spent studying is higher

What is the scientific notation of 427 thousand

Answers

Thousand is 1,000, or 10^3, when multiplied by the 100 in 427, it becomes 10^5. Because we divided 427 and put the notation in the 10^#. It would be 4.27, once we add the ten^#, it becomes..

Answer: 4.27*10^5
Answer : 427.000 I think it’s correct but hope this helps

Which ordered pair is the solution to the system of equations?2x+y=-8
x-y=-4

A.
(−3, −2)

B.
(−1, 3)

C.
(1, 5)

D.
(−4, 0)

Answers

so first solve for x and y
add the 2 equations together

2x+x+y-y=-8-4
3x=-12
divide by 3
x=-4
subsitute
-4-y=-4
addd 4 to both sdies
-y=0

the solution is (x,y)  (-4,0) or D
So,

I have decided to use Elimination by Addition.

Add the two equations together
3x = -12

Divide both sides by 3
x = -4

Substitute -4 for x in the second equation.
-4 - y = -4

Add 4 to both sides
-y = 0
y = 0

Check
2(-4) + 0 = -8
-8 = -8 This checks.

-4 - 0 = -4
-4 = -4 This also checks.

The solution set for this system is as follows:
S = {(-4,0)}

That would be option D.

A 14 kg bag of pears for $17. how much is per

Answers

17 dollars divided by 14kg of pears equals 1.21 (to 3 significant figures)
$17 divided by 14kg and you will get 1.21. Hope this helps!

The object shown above has a mass of 10g. It is slowly lowered into the beaker of water as shown. Will it float?

Answers

Yes the object will be able to float 
yes i think it will be able to float because it is so light.

Please help!!!Which of the following lines is parallel to x=8?

3y=16

X=7

X=y

Y=8


Select the equation of the line that passes through the points (5,7) and is perpendicular to the line x=4.

Y=4

X=5

Y=7

X=7

Answers

The answer to question #1 is x = 7

For a line to be parallel to x = 8, it has to start with x = some number. Such a line would have an undefined slope.

Now, x = y is a line that goes through the origin. It has a slope of 1.

The answer to question #2 is y = 7

If a line is perpendicular to x = some number, then it has to be y = some number.

And this perpendicular line has to go through the point (4,7). So what is the y-value of this point, since the equation starts with y? The y-value is 7. So the equation has to be y = 7
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