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mojhsa [17]
3 years ago
7

20 Points- Need help, please explain how you got your answer!

Mathematics
1 answer:
Korolek [52]3 years ago
5 0
3v+2 = 7v-6
3v-7v = -6-2
-4v = -8
v = 2

then the length of QS = 3(2)+2 = 6+2 = 8
and the length of TV = 7(2)-6 = 14-6 = 8
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What is the approximate area of a circle? Use pi = 3.14.
gayaneshka [121]
The area of a circle is equal to pi time the radius squared.
So you get: A=3.14(10.4^2)
A=3.14(108.16)
A=339.62
Therefore your answer is D.
4 0
3 years ago
Read 2 more answers
PLEASE PLEASE PLEASE HELP. This is a geometry worksheet.
Vinil7 [7]

Answer:

where's the question?

3 0
3 years ago
Mr. Dunbar takes his wife out to dinner at Macados to celebrate the holidays. Their total bill was $48.36 but he had a coupon to
viktelen [127]

Answer:

$51.38 or $60.45

Step-by-step explanation:

$48.36 minus 15 percent is $41.10. If you're tipping the waitress 25 percent from that price, then it would be $51.38. If you're tipping the waitress 25 percent from the original price, it would be $60.45.

3 0
3 years ago
The heights (in cm) and arm spans (in cm) of 31 students were measured. The association between (height) and (arm span) is shown
sergeinik [125]

Answer: Mike's arm span is 7.165 cm longer than the George's one.

Step-by-step explanation:

We have that the association between height and arm span is modeled by the equation

y = 4.5 + 0.977*x

where y is height and x is arm span.

Mike is 172 cm tall, so his arm span is:

172cm = 4.5 + 0.977*x

x = (172 - 4.5)/0.977 = 171.443 cm

and George is 165 cm tall, so his arm span is:

x = (165 - 4.5)/0.977 = 164.278 cm

Then the difference between their arm span is:

171.443cm - 164.278cm = 7.165 cm

So Mike's arm span is 7.165 cm longer than the George's one.

6 0
3 years ago
I need help with geometry.
Dahasolnce [82]
1.

In any trapezoid, the length of the midsegment is \frac{|base_1|+|base_2|}{2}

substituting the known values:

\frac{24+|base_2|}{2}=19

24+|base_2|=38

|base_2|=38-24=14

2.

Notice that since D and have the same y-coordinate, then DE is horizontal, and since F and D have the same x-coordinate, FD is vertical.

Thus FD and DE are perpendicular, so the triangle FED is a right triangle.

The median drawn from the right angle, is equal to half the hypotenuse.

That is, |DO|=1/2 |FE|, thus |OE|=|OF|=|OD|, are all radii of the circle centered at O.

O is the midpoint of EF, and is found by the Midpoint formula:

O=( \frac{1+7}{2} , \frac{5+1}{2} )=(4, 3)


Answer:

1. 14

2. (4, 3)

4 0
3 years ago
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