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3 years ago

14

Billy is saving up to buy a $400 PS5. He already saved $275. If he has saves $25 a week, how many weeks will it take him to save

enough money to buy the PS5? Write an equation for this situation. Use x as your variable.
Solve equation

2 answers:

JulijaS [17]3 years ago

7 0

Answer:3 weeks

Step-by-step explanation:

goldenfox [79]3 years ago

3 0

Answer is 9 weeks

Explanation/equation 275+25x=400

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60 in the ratio of 5:7

dusya [7]

5+7 = 12
60/12 = 5

5 x 5 = 25
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<span>60 in the ratio of 5:7 = 25:35
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3 years ago

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2 years ago

The length of a rectangle is 8 feet more than its width. If the width is increased by 4 feet and the length is decreased by 5 fe

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Assign the following variables for the origina3l rectangle:
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No for the second rectangle:
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Now our problem says that the two area will be equal to each other, which sets up the following equation:

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United Blood Services is a blood bank that serves more than 500 hospitals in 18 states. According to their website, a person wit

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Answer:

a) 0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b) 0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

Step-by-step explanation:

I am going to solve this question treating these events as Venn probabilities.

I am going to say that:

Event A: Person has type A blood.

Event B: Person has Rh- factor.

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This means that $P(A) = 0.43$

15% of people have Rh- factor

This means that $P(B) = 0.15$

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This means that $P(A \cup B) = 0.52$

a. Find the probability that a person has both type O blood and the Rh- factor.

This is

$P(A \cap B) = P(A) + P(B) - P(A \cup B)$

With what we have

$P(A \cap B) = 0.43 + 0.15 - 0.52 = 0.06$

0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b. Find the probability that a person does NOT have both type O blood and the Rh- factor.

1 - 0.06 = 0.94

0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

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