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2 years ago

Susie bought a $2,100 computer on an installment plan

Mathematics

1 answer:

fomenos2 years ago

5 0

Answer:

$110 interest paid

Step-by-step explanation:

Let's see how much ultimately Susie has to pay.

90 per month for 2 years (2*12 = 24 months) = 90 * 24 = $2160

Also, she made a 50 dollar downpayment, so total paid is:

2160 + 50 = 2210 dollars

Thus, the cost is 2100, but ultimately she has to pay 2210 for using installment plan.

<u>How much interest is that?</u>

The exxtra amount is the interest, so

2210 - 2100 = $110 interest paid

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Andy joins a social networking site. After day three, he has 25 friends; after day eight, he has 40 friends. Write the equation

Allisa [31]

Answer:

Point slope intercept form: The equation for line is given by; $y-y_1=m(x-x_1)$ ......[1] ; where m is the slope and a point $(x_1, y_1)$ on the line.

Let x represents the number of days and y represents the number of friends.

As per the statement: After day three, he has 25 friends; after day eight, he has 40 friends.

⇒ We have two points i.e,

(3, 25) and (8, 40)

First calculate slope(m);

$m = \frac{y_2-y_1}{x_2-x_1}$

Substitute the given values we get;

$m = \frac{40-25}{8-3}=\frac{15}{5}$ = 3

now, substitute the given values of m=3 and a point (3, 25) in [1] we get;

$y-25=3(x-3)$

Using distributive property; $a \cdot(b+c) = a\cdot b + a\cdot c$

$y-25 = 3x - 9$

Add 25 on both sides, we get;

$y-25+25 = 3x - 9+25$

Simplify:

y =3x + 16

if x = 18 days, then;

y = 3(18) + 16 = 54+16 = 70

Therefore, he will have on day 18, if he continues to add the same number of friends each day is, 70 friends.

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2 years ago

The sum of two numbers is 48 . The larger number is 12 more than the smaller number. What are the numbers?

SSSSS [86.1K]

Answer:

Smaller is 18 and larger be 30

Step-by-step explanation:

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2 years ago

How many ounces are in a 12 lb bag of potatoes

Readme [11.4K]

Answer:192 because id u do the math and multiply.

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3 years ago

Seven blue and four red balls are to be arranged in order. How many ways can this be done if (1) The blue balls are distinguisha

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Answer:

1) n = 39916800

2) n = 1663200

3) n = 330

Step-by-step explanation:

1) If the blue balls are distinguishable as are the red balls

Then you can arrange these balls in the following ways, we must use a permutation

In totally we have 11 balls, then

n = 11P11

$n = \frac{11!}{(11-11)!} = 11! = 39916800\\$

2) If Blue balls are distinguishable, but the red balls are identical

In this case, we need to do a correction due to the red balls are identical and we cannot identify the difference when we interchange two red balls

$n = \frac{11!}{4!} = \frac{39916800}{24} = 1663200$

3) If the balls of each color are indistinguishable

We proceed equal to the before case but we include a correction due to blue balls also

$n = \frac{11!}{4!*7!} = \frac{39916800}{24*5040} = 330$

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2 years ago

What is the missing statement in step 3 of the proof? mAngle1 = mAngle2 mAngle1 + mAngle2 = 90° mAngle2 = mAngle3 mAngle2 + mAng

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Answer:

answer is 90

if m^2=m^3

then, 90+90=180

Step-by-step explanation:

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2 years ago

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