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guapka [62]
2 years ago
7

Donna reads a book at a rate of 20 chapters per hour.

Mathematics
2 answers:
mart [117]2 years ago
8 0

Answer:

20/1=20 1 hour read one book

Step-by-step explanation:

4 chapter read in 4 hour because 1 chapter read in one gour

Studentka2010 [4]2 years ago
5 0

Answer:

80

Step-by-step explanation:

When working with rates, multiplication is very useful. Rate questions will give a specific rate and then a time period. They often ask, based on the rate, what can be achieved in the given time period.

The question says that if Donna can read 20 chapters in 1 hour, how many chapters can she read in 4 hours. To solve this, you can multiply 20*4; this will show how many chapters she reads in the given time period.

Since 20*4=80, she must read 80 chapters in 4 hours.

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Which of these rational numbers is also an integer?
dexar [7]

Answer:

6/3

Step-by-step explanation:

An integer is a whole number, that is not a fraction. All of the numbers are fractions, but if you simplify them, you see that 6/3=2. 2 is a whole number, and therefore an integer.

3 0
3 years ago
Read 2 more answers
what is the equation of a line that passes through the point (6,1) and is perpendicular to the line whose equation is y=2x-6?
alexandr402 [8]

Answer:

y = -(1/2)x + 4

Step-by-step explanation:

Use the standard form on an equation:  y = mx + b

A line that is perpendicular has a slope that is the opposite reciprocal of the other line.  We also have a point (x, y) that is on the line, so our equation begins as..

1 = -(1/2)(6) + b           We must solve for b (  -1/2 is the opposite reciprocal of 2)

1 = -3 + b

4 = b  

so our equation is

y = -(1/2)x + 4

3 0
3 years ago
Read 2 more answers
Suppose you invest $100 a month in an annuity that
Dominik [7]

Answer:

  $2502.60

Step-by-step explanation:

The formula for the amount of an annuity due is ...

  A = P(1 +r/n)((1 +r/n)^(nt) -1)/(r/n)

where P is the monthly payment (100), r is the annual interest rate (.04), n is the number of compoundings per year (12), and t is the number of years (2). Given these numbers, the formula evaluates to ...

  A = $100(1.00333333)(1.00333333^24 -1)/0.00333333

  = $100(301)(0.08314296)

  = $2502.60

_____

This value is confirmed by a financial calculator. The given answer choices all appear to be incorrect. The closest one corresponds to an annual interest rate (APR) of 4.286%, not 4%.

4 0
3 years ago
Read 2 more answers
1797 is 31% of a number. What number?
abruzzese [7]
You should
1797/g = 31/100
g= 1797 x 100 ÷ 31
g= 5796.77
8 0
3 years ago
PLEASE HELP!<br><br> Thank you if you helped! <br> Will give Brainliest
pogonyaev

Rent all

55.5/3 = 18.5

74/4 = 18.5

it costs 18.5 per day

1.     y = 18.5 x      where y =cost and x=days


A-1

10.99 per 1/2 day

10.99 * 2 =21.98 per day

2.  it costs 21.98 per day from A-1


Rentall is the better deal because it is only 18.50 per day versus 21.98 per day




5 0
3 years ago
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