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2 years ago

Rachel has $10.00. She wants to buy a book that costs $6.79. Will she have enough

Mathematics

2 answers:

prisoha [69]2 years ago

8 0

Answer:

Step-by-step explanation:

Because 10 - 6.79 = 3.21

Nezavi [6.7K]2 years ago

6 0

No because if you subtract $6.79 from 10.00 you will get $3.21

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In 1980, the median age of the U.S. population was 30.0; in 2000, the median age was 35.3.

miss Akunina [59]

Answer:

y = 0.265x - 494.7

Step-by-step explanation:

Let median age be represent by 'a' and time be represent by 't'

In 1980, median age is given 30

which means that

a₁ = 30

t₁ = 1980

In 2000, the median age is given 35.3

which means that.

a₂ = 35.3

t₂ = 2000

The slope 'm' of the linear equation can be found by:

m = (a₂ - a₁) /(t₂ - t₁)

m = (35.3 - 30)/(2000-1980)

m = 0.265

General form of linear equation is given by:

y = mx + c

y = 0.265x +c

Substitute point (1980,30) in the equation.

30 = 0.265(1980) + c

c = -494.7

Hence the the linear equation can be written as:

y = mx + c

y = 0.265x - 494.7

4 0

3 years ago

A 7-pack of plastic rings costs $2.52. What is the unit price? per ring?

VikaD [51]

Answer:

7 rings = $2.52

then 1 ring will cost = 1/7×2.52

= 0.36

Therefore 1 ring will cost $0.36.

4 0

3 years ago

If m is 7 and x is 7 so what is m

olchik [2.2K]

Can u just post the whole question or elaborate further

6 0

3 years ago

Read 2 more answers

If A = {2, 3, 4, 5} and B = {5, 6, 7, 8}, what is A U B? {2, 3, 4, 5, 6, 7, 8) {5}

Ulleksa [173]

Hey!!!!

Here's your answer:

Solution:

A={2,3,4,5}

B={5,6,7,8}

 A U B={2,3,4,5} U {5,6,7,8}

 ={2,3,4,5,6,7,8}

In case of Union,we have to list all the elements which are present in both sets.

Hope it helps...

Good luck on your assignment

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3 years ago

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Tatiana [17]

Answer:

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Step-by-step explanation:

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3 years ago