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2 years ago

8

Margo has $100 In her bank account and is saving $50 per month. Jon has $75 in his bank account and is saving $100 per month. Wh

ich of the following systems of equations would tell how many months, x, it will take for Margo and Jon to have the same amount of money, y?

1 answer:

Vikentia [17]2 years ago

8 0

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A phone company offers two monthly plans. Plan A costs $11 plus an additional $0.16 for each minute of calls. Plan B costs $29 p

Andrew [12]

Answer:

The plans will cost the same when the amount you have to pay for talking for "x" minutes on Plan A is the same has what you have to pay for talking for the same number of "x" minutes when using Plan B.

$$ Plan A = $$ Plan B

To find the charge on each plan we add the base rate to the per minute call rate for each.

Plan A = $27 + $0.11x

Plan B = $13 + $0.15x

Let's drop the $ sign for now and get rid of the decimal point by multiplying by 100.

2700 + 11x = 1300 + 15x

Subtracting 11x and 1300 from both sides:

4x = 1400

x = 350 min.

Using this result the plans both cost $65.50 for 350 min of talk time.

Step-by-step explanation:

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2 years ago

Allen is showing his work in simplifying –8.3 + 9.2 – 4.4 + 3.7. Identify and explain any errors in his work or in his reasoning

Bas_tet [7]

Answer:

try a

Step-by-step explanation:

4 0

3 years ago

F(x)=x2+8x+6. What is the value of f(4)?

dezoksy [38]

46

When it says f(4) that means x=4

So you then just fill in all the x’s with 4’s and solve as normal

4 0

2 years ago

The percentage of people under the age of 18 was 23.5% in New York City, 25.8% in Chicago, and 26% in Los Angeles.

Hatshy [7]

Answer:

0.0158 = 1.58% probability that all of them are under 18.

Step-by-step explanation:

Probability of independent events:

If three events, A, B and C are independent, the probability of all happening is the multiplication of the probabilities of each happening, that is:

$P(A \cap B \cap C) = P(A)P(B)P(C)$

The percentage of people under the age of 18 was 23.5% in New York City, 25.8% in Chicago, and 26% in Los Angeles.

This means that $P(A) = 0.235, P(B) = 0.258, P(C) = 0.26$

If one person is selected from each city, what is the probability that all of them are under 18?

Since the three people are independent:

$P(A \cap B \cap C) = 0.235*0.258*0.26 = 0.0158$

0.0158 = 1.58% probability that all of them are under 18.

8 0

2 years ago

What is the height of the building?<br><br> 33.9 m<br> 37.1 m<br> 36.8 m<br> 34.5 m

madreJ [45]

37.1
Hope this helps a lot!!

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2 years ago