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mart [117]
3 years ago
11

Help with this math.

Mathematics
1 answer:
valentinak56 [21]3 years ago
6 0

Answer:

Step-by-step explanation:

Mean:  Add them all up then divide that sum by how many there are.

Median:  They are in number order, so that makes median and mode very very nice.  For an odd number of points, you choose the middle point, for an even number of points (which we have) take the two and find the average of those two.  That is, add the two up then divide them by two, it's basically taking their mean.  since there are 20 you take the 10th and 11th numbers.

Mode:  Again, super easy since they are in number order, just look for the number that appears the most.  If none do, there is no mode.  Hint, there is a number that appears twice.  

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Find x. Round to the nearest degree.
jeka94

The Law of Cosines features the 3 side lengths of a triangle, plus the measure of the angle opposite one of those sides.


We want angle x, which is opposite the side of length 39.


Then: a^2 = b^2 - 2ab cos C becomes 39^2 = 36^2 + 59^2 - 2(36)(59)cos x


or 1521 = 3481 + 1296 - 2(36)(59) cos x


Subtract (3481+1296) from both sides: 1521 - 4777 = -4248cos x

-3256 = -4248cos x

-3256

Then: cosx = --------------- = 0.766

-4248


Solving for x: x = arccos -0.766 = 0.698 radian, or 40 degrees (answer)

5 0
3 years ago
Ryan estimates the measurements of the volume of a container to be 36 cubic inches. the actual volume of the popcorn container i
vlada-n [284]
The absolute error is 4 cubic inches. To find the absolute error, you simply subtract the two values.

The percent error is 10%. To find the percent error, we create a fraction out of the error and the actual value.
4 / 40 x 100 = 10%
6 0
3 years ago
Carrie borrowed $960 in interest free to pay for a car repair. She will pay $120 monthly until the loan is paid off. How many mo
astraxan [27]

Answer:

It will take Carrie 8 months to pay off the loan

Step-by-step explanation:

Step 1: Determine the expression for total amount to be paid

T=m×n

where;

T=total amount to be payed

m=total payments per month

n=number of payments to be made

In our case;

T= $960

m= $120

n=unknown

replacing;

960=120×n

120 n=960

n=960/120

n=8 months

It will take Carrie 8 months to pay off the loan

6 0
3 years ago
How to solve 21 = m +14 1/6
Oduvanchick [21]

Answer:

\frac{56}{3}

Step-by-step explanation:

Image

5 0
2 years ago
Read 2 more answers
How many cubes with side lengths of 1/2 cm does it take to fill the prism? Height: 3/2 cm Width:1 cm length: 2 cm
Irina18 [472]

Answer:

24

Step-by-step explanation:

If we want to cover the base of the prism having dimensions 2 cm × 1 cm with \frac{1}{2} cm length of cube, then there will be (4 × 2) = 8 cubes that can occupy the base.

Width is 1 cm, so there can fit 2 cubes of length \frac{1}{2} cm and length is 2 cm, where 4 cubes of length \frac{1}{2} cm can fit. So, in total (4 × 2) = 8 cubes of \frac{1}{2} cm length.

Now, height of the prism is \frac{3}{2} cm where 3 cubes of length \frac{1}{2} cm can fit.

Therefore, in total there can be (8 × 3) = 24 cubes of \frac{1}{2} cm length. (Answer)

8 0
3 years ago
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