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3 years ago

4 books for 1$12.00 3 books for $9.00 What is the price per book? What is the constant of proportionality

Mathematics

1 answer:

Valentin [98]3 years ago

6 0

Answer:

the price per book is $3 the constant of proportionality is 3

Step-by-step explanation:

12 divided by 4 is 3 and 9 divided by 3 is 3 so it means that the price for 1 book is going to be 3 and for every book you buy the original value will be 3.

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(1, 7); slope = -1 please help fast

Harrizon [31]

Answer:

y = - x + 8

Step-by-step explanation:

Step 1:

y = mx + b Slope Intercept Form

Step 2:

y = -x + b Input Slope

Step 3:

7 = - 1 ( 1 ) + b Input x and y

Step 4:

7 = - 1 + b Multiply

Step 5:

b = 8 Add 1 on both sides

Answer:

y = - x + 8

Hope This Helps :)

7 0

3 years ago

Read 2 more answers

The largest county in the state of Texas is 6064 square miles larger than the smallest county in the same state. The size of the

Ann [662]

The smallest county is 129 square miles large.

Step-by-step explanation:

Let,

Smallest county = x

Largest county = y

According to given statement;

The largest county in the state of Texas is 6064 square miles larger than the smallest county in the same state.

y = x+6064 Eqn 1

The size of the largest county is 48 times the size of the smallest county plus one square mile.

y = 48x+1 Eqn 2

As Eqn 1 and Eqn 2 are both equal to y, therefore,

Eqn 1 = Eqn 2

$x+6064=48x+1\\6064-1=48x-x\\6063=47x\\47x=6063$

Dividing both sides by 47

$\frac{47x}{47}=\frac{6063}{47}\\x=129\ square \ miles$

The smallest county is 129 square miles large.

Keywords: linear equation, substitution method

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7 0

3 years ago

Nathan spins 2 different spinners at the same time.There are a total of 10 possible outcomes.which pair of spinners did Nathan s

Dahasolnce [82]

Answer: 20 percent .............

4 0

3 years ago

What is a1? what is d? what’s the equation? what is a7? what is a59?

Zina [86]

Answer:

a1 = 2

d = 3

an = 2 + (n - 1) * 3

a7 = 20

a59 = 176

Steps:

a1 is the initial value (when n equals 1), and since there are 2 crosses, it is 2.

d is the added value to each amount of crosses. And since the second amount is 5 and the third amount is 8, we can determine that each n is adding 3 crosses, therefore making d = 3.

The equation is simply plugging in the values for a1 and d.

A7 is simply plugging in 7 for n in the equation and solving for it. So;

a7 = 2 + (7 - 1) * 3

a7 = 2 + 6 * 3

a7 = 2 + 18

a7 = 20

And same thing as the last for 59 except substitute 59 in for where you put 7;

a59 = 2 + (59 - 1) * 3

a59 = 2 + 58 * 3

a59 = 2 + 174

a59 = 176

8 0

2 years ago

Read 2 more answers

For each arithmetic sequence find d and the missing terms: a) 3, ?, ?, 10.5

MakcuM [25]

Answer:

Step-by-step explanation:

8 0

3 years ago