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SpyIntel [72]
4 years ago
14

Miranda is taking tennis lessons in one lesson, she returned 36 balls out of all the balls served to her. If she returned 40% of

the balls, how many balls were
served to her?
Mathematics
1 answer:
iragen [17]4 years ago
4 0

Answer:

90 balls

Step-by-step explanation:

Set up proportion

36/x = 40/100

Cross multiply: 40x=3600

Solve for x

x=90

To check work:

40 percent of 90 would be 36

90(0.4)=36

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Find the area of the trapezoid. Leave your answer in simplest radical form.
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Answer:

64√3 ft²

Step-by-step explanation:

The short leg of the triangle has length (8 ft)(cos 60°), or (8 ft)(1/2), or 4 ft.

The long leg (represented by the dashed line) is (8 ft)(sin 60°), or

(8 ft)(√3/2), or 4√3.  This is also the width of the horizontal trapezoid.

The area of this horizontal trapezoid is:

      (sum of horizontal sides)

A = ------------------------------------- * (width)

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Here, the area is:

      (18 ft + (18 ft - 4 ft)

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5 0
3 years ago
10 points right only
SIZIF [17.4K]
7/12, 2/3, 17/24, 3/4
3 0
3 years ago
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If two events are independent, then Group of answer choices the sum of their probabilities must be equal to one. they must be mu
algol13

Answer:

For this case we can define the following two events A and B.

In order to classify A and B as independent we needd to satisfy this condition:

P(A \cap B) = P(A) *P(B)

None of the above.

True, because none of the options were correct.

See explanation below

Step-by-step explanation:

For this case we can define the following two events A and B.

In order to classify A and B as independent we need to satisfy this condition:

P(A \cap B) = P(A) *P(B)

So let's analyze one by one the possible options:

the sum of their probabilities must be equal to one.

False, the sum of the probabilities can be <1 so this statement is not true

they must be mutually exclusive.

False when we talk about mutually exclusive events we are saying that:

P(A \cap B) =0

But independence not always means that we have mutually exclusive events

their intersection must be zero.

False the intersection of the probabilities is 0 just if we have mutually exclusive events, not independent events

None of the above.

True, because none of the options were correct.

5 0
3 years ago
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pantera1 [17]

Answer: The fraction in 3/9 which is 1/3

Step-by-step explanation:

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3 years ago
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Fynjy0 [20]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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