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marysya [2.9K]
2 years ago
9

Sheila has a bag of 40 marbles. 10 of them are blue, 12 of them are green and the rest of them are red. What is the probability

that Sheila will get a red marble if she pulls it at random from the bag.
Mathematics
1 answer:
Schach [20]2 years ago
8 0

Answer:

18

Step-by-step explanation:

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After ten years his salary is x2

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The circle graph below represents the opinions of 100 students about their favorite sports. Each student chose exactly one of th
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Yo…what’s the graph?

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The recommended angle for a wheelchair ramp is 5 degrees. If the rise of the ramp to go up the steps is 5 feet, find the horizon
dybincka [34]

Answer:

57.2\ ft

Step-by-step explanation:

we know that

The formula of slope is "rise over run", where the "rise" (means change in y, up or down) and the "run" (means change in x, left or right)

In this problem

The tangent of angle of 5 degrees is equal to the quotient of "rise over run"

Let

y ----> the rise of the ramp

x ----> the run of the ramp

tan(5^o)=\frac{y}{x}

we have

y=5\ ft

substitute and solve for x

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5 0
3 years ago
he Garcia family bought 400 yards of fencing to enclose a circular wildflower garden. They will use all of the fencing. a. What
frez [133]

9514 1404 393

Answer:

  • 127.32 yards diameter
  • 12,732.4 square yards area

Step-by-step explanation:

The diameter can be found from the circumference using the relation ...

  C = πd

  d = C/π = (400 yd)/π ≈ 127.32 yd . . . . diameter

The area is ...

  A = πr²

where the radius (r) is half the diameter.

  A = π(63.662 yd)² ≈ 12,732.4 yd² . . . . area

_____

<em>Additional comment</em>

We have used a full-precision value for pi. If you use 3.14, your answers will be different. Your diameter will be about 127.4 yards; your area about 12,738.9 yd².

6 0
3 years ago
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