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Elden [556K]
2 years ago
13

PLEASE HELP I HAVE 45 min to SUBMIT WILL GIVE BRAINLESSLY

Mathematics
1 answer:
luda_lava [24]2 years ago
3 0

Answer:

Step-by-step explanation:

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The diagram shows a track composed with a semicircle on each end. The area of the rectangle is 8,400 square meters. What is the
MrRa [10]

Answer:

468.4 meters

Step-by-step explanation:

Find the width of the rectangle.

The area of a rectangle is A=length*width. Substitute the values of length and area and solve for width.

A=length*width

8,400=140*width

60= width

Use the width of the rectangle to find the circumference of the semicircles. Since each semicircle is half of a​ circle, the perimeter of the two semicircles is equal to the circumference of one circle.

The circumference of a circle is equal to pi​d, where d is the diameter. The diameter of the semicircle is the same as  the width of the rectangle.

​So, the diameter is 60 meters. Substitute the diameter into the formula for the circumference and simplify using 3.14 for pi.

≈188.4

(2 times 140)+ 188.4

​So, the perimeter of the track is 468.4 meters.

7 0
3 years ago
How many distinct triangles can be formed for which m∠E = 64°, g = 9, and e = 10?
zysi [14]

Answer:

1) one

2) zero

Step-by-step explanation:

e/sinE = g/sinG

10/sin64 = 9/sinG

sinG = 0.8089146417

G = 53.99

j/sinJ = k/sinK

3/sin129 = 8/sinK

sinK = 2.072389241

3 0
3 years ago
Read 2 more answers
A card is chosen at random from a deck of 52 cards. What is the probability that a king or queen is chosen?
Slav-nsk [51]

The answer is B) 2/13.

An easy way to figure this out is to find what the unsimplified probability would be:

Since there are 8 kings and queens in total, the number is:

8/52

But, since these are both even numbers, they can be simplified.

1/4 x 8 = 2

1/4 x 52 = 13

2/13

Since 13 is a prime number, the answer cannot be simplified anymore.

4 0
3 years ago
4. Exchanging one good for another is called
Sonbull [250]

Answer: Barter

Step-by-step explanation: hope this helps

4 0
3 years ago
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Percentage of change from $158.49 to $149.99
8_murik_8 [283]

Answer:

-5.36%

Step-by-step explanation:

4 0
2 years ago
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