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Paladinen [302]
3 years ago
5

A circle with circumference 20 has an arc at 72 central angle. what is the length of the arc

Mathematics
1 answer:
Vsevolod [243]3 years ago
5 0

Answer:

4 units

Step-by-step explanation:

\because \: l =  \frac{ \theta}{360 \degree}  \times c \\  \\  \therefore \: l =  \frac{72 \degree}{360 \degree}  \times 20 \\  \\ \therefore \: l =  \frac{72 \degree}{18\degree} \\  \\ \therefore \: l =  4 \: units

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He made a baby quilt that was 3 feet wide. it's perimeter is 16 feet. What was it's area?
Anon25 [30]
Since it’s 3 feet wide that means this is a rectangle, not a square. so Two sides are 3 feet which would equal 6. 16-6=10. The other two sides would have to be 5 so that all the sides add up to 16. The area for a rectangle is Length • Width. so 3•5= 15 feet squared.
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4 years ago
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The total weight of a truck and its load is w pounds. Let /be the weight of the load . When it's empty the truck weighs 2,439 po
emmainna [20.7K]

Answer:

equation will be 2439+/=w

Step-by-step explanation:

It is pretty clear from the question, that

the weight of the load is /. and the weight of the empty truck is 2439 pounds.

It means when we load the truck with '/' pounds load, trucks weight increases and is given by

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ki77a [65]

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3 years ago
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3 years ago
Please Help! Will mark brainliest.!!!!!
olga_2 [115]

Answer:

C

Step-by-step explanation:

Median of triangle: It is a line segment joining a vertex to the midpoint of the opposite side.

Consider ΔABC, point F id the midpoint of line segment AB and E is the midpoint of luine segment AC.

Draw line segments FC and BE(medians of  triangle). G is the point where line segment FC and BE meet. Now, Join AG.

Let H be the point outside the ΔABC and AG passs through the point H  such that AG intersects BC at D. BH and HC are dashed lines.

We need to show that D is the midpoint of BC. The correct logical order for proof will be:

III. GC is parallel to line segment BH and line segment BG is parallel to line segment HC.

IV.  Line segment FG is parallel to line segment BH and line segment GE is parallel to line segment HC.

I. BGCH is a parallelogram as opposite sides are parallel (from III.)

II. Since, diagnols of a parallelogram bisect each other. Henc, we get BD=DC.

Therefore, D is mid pont of BC.

It implies that AD is also a median.

Hence, all the three medians that are: BE,FC and AD passes through a common vertex G.

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