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2 years ago

1 in 4 families now owes money on a

Mathematics

1 answer:

Alecsey [184]2 years ago

4 0

"a rise of a quarter from last year" means the percentage went up by 25%

x = old value

x + 25% of x = x + 0.25x = 1.25x = new value = 0.25 since "1 in 4" means 1/4 = 0.25

So,

1.25x = 0.25

x = 0.25/1.25

x = 0.2

x = 2/10

x = 1/5

Answer: The fraction of families that owed money is 1/5, or 1 in 5.

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Carmen has 240 action figures she wants to display in 4 bookcases. Each bookcase has 5 shelves, and each shelf gets the same num

Levart [38]

Answer:

60 books in one bookcase

12 books in one shelf

plz mark brainliest

Step-by-step explanation:

figures is one bookshelf =240/4

figures in each shelf=240/4*5

7 0

2 years ago

A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a pers

Arturiano [62]

Answer:

A person who watches 8.5 hours of TV can do 30.4 sit ups.

Step-by-step explanation:

The regression equation is used to predict or estimate the value of the response (or dependent) variables using the information about the explanatory (or predictor) variables.

The general form of a regression equation is:

$y=ax+b$

Here,

y = dependent variable

x = independent variable

a = intercept

b = slope

The regression equation representing the relationship between hours of TV watched per day (x) and number of sit ups a person can do (y) is:

$y=-0.74x+36.359$

Compute the number of sit ups a person who watches 8.5 hours of TV can do as follows:

$y=-0.74x+36.359$

$=(-0.74\times 8.5)+36.359\\=-6.29+36.659\\=30.369\\\approx 30.4$

Thus, a person who watches 8.5 hours of TV can do 30.4 sit ups.

6 0

3 years ago

Hector has a part-time job at a garage. He gets a paycheck of $820 every for

ElenaW [278]

Answer:

A. Hector pays $ 123 in taxes each paycheck.

B. Hector should expect to receive $615 or 75% of his regular pay.

C. Hector will be paid $ 902 when he receives his next 4- week paycheck.

Step-by-step explanation:

1. Let's review the information given to us to answer the questions correctly:

Paycheck Hector gets every four weeks = $ 820

2. Hector has to pay 15% of his income in taxes. How much money does he

pay in taxes each paycheck? Show your thinking with a diagram and

calculations.

Taxes = 15% of 820

Taxes = 0.15 * 820

Taxes = $ 123

Hector's paycheck: ←------------------------------820--------------------------------------→

Taxes: ←----123---→

3. Hector took a 1-week vacation, so his next paycheck will only be for 3

weeks of work. What percentage of his regular pay should he expect to

receive? How much is that?

We can answer this question using the Direct Rule of Three, this way:

Weeks Paycheck

4 820

3 x

***********************************

4x = 820 * 3

4x = 2,460

x = 2,460/4

x = 615

615/820 = 0.75 = 75%

4. The garage owner is impressed with Hector's work and is giving him a

10% raise. How much will Hector be paid when he receives his next 4- week paycheck?

Raise = 10% of 820

Raise = 0.1 * 820 = 82

Next 4- week paycheck = 820 + 82 = 902

4 0

3 years ago

Starts with z and cube it

OlgaM077 [116]

Cubed means you have to multiply it by the other number like an exponent so that means the answer is z3

8 0

3 years ago

Nina purchased a meal for $24. She left a 20% tip. How much was the tip?

k0ka [10]

Answer:

She left a $4.80 tip.

6 0

2 years ago

Read 2 more answers