X = 8, y = 20. Find y when x = 42

Answers

Answer 1

Answer: Create proportions to do this question
When x is 8, y is 20
when x is 42, y is ?

$(8)/(20)$ = $(42)/(?)$

Do cross multiplication:

8 × ? = 20 × 42
8 × ? = 840

Divide by 8 to isolate the unknown

$(8*?)/(8)$ = $(840)/(8)$
8 and 8 cancels out

? = 105

y is 105 when x is 42

Answer 2

Answer: 8 / 20 = 42 / y;
Then, y = ( 42 × 20 ) / 8 ;
y = 840 / 8 ;
y = 105;

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A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks.Number of pages 50 100 150 200
Cost 1.55 2.25 2.95 3.65

Which equation gives the cost, y, in terms of the number of pages, x?

A.

y = 0.014x + 49.15

B.

y = 0.014x + 1.55

C.

y = 0.014x + 0.85

D.

y = 58.8x + 0.85

Answers

so y=mx+b

cost=m(number of pages)+b

cost=y
# of pages=x

so points are
(x,y)
(50,1.55)
(100,2.25)
(150,2.95)
(20,3.65)

so solve for slope/m you do (y₁-y₂)/(x₁-x₂) so
just use any for example
(1.55-2.25)/(50-100)=-0.70/-50=1 times 0.7/50=7/500= (to convet to decimal form) 14/1000=1.4/100=0.14/10=0.014/1=0.014

slpoe is 0.014

y=0.014x+b

input one of the points exg 50 for x and 1.55 for y and solve for b
1.55=0.014(50)+b
1.55=.7+b
subtract .7 from both sides
0.85=b

so the equation is
y=0.014x+0.85

which is C

1 times 10 to the 21st power

Answers

Answer:

I believe the answer to this question is: 1 x 10^21 equal to 1000000000000000000000.

What is 2 to the 13th power over 8.

Answers

2 to the 13th power = 8192
8192 divided by 8 = 1024

How many pints are in 8 cups

Answers

The answer would be 4

4 would be the answer

The amount of data left on a cell phone plan is 6 GB after 8 days. 1.5 GB of data is used each day. How much data is available at the beginning of the cycle?

Answers

Answer:

the answer should be 18 GB

A student completed 1/4 of a workbook in 3/5 hour.He plans to work for 1 more hour at the same rate.What Fraction of the workbook should he expect to complete in 1 hour?

Answers

The fraction of the workbook he should expect to complete in 1 hour is 5/12

How to determine the fraction of work?

The student's rate is given as:

1/4 of a workbook in 3/5 hour.

The rate in this scenario is calculated using:

Rate = Workbook/time

So, we have:

Rate = 1/4 / 3/5

Express as product

Rate = 1/4 * 5/3

Evaluate

Rate = 5/12

This means that she would complete 5/12 of the workbook in 1 hour

Hence, the fraction of the workbook he should expect to complete in 1 hour is 5/12