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3 years ago

Jeff bought 10 cookies and ate 4 of them. He ate

Mathematics

2 answers:

zmey [24]3 years ago

8 0

he ate 40 percent of the cookies

Natasha_Volkova [10]3 years ago

3 0

Answer:

Jeff ate 40% of the 10 cookies

Step-by-step explanation:

I took the cookies he ate and divided it by the total amount of cookies and then i convertied it into a percent.

4/10=0.4

0.4=40%

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Kyoko is reading a book by her favorite author. She read the first 20 pages in One-half of an hour. Reading at the same pace, Ky

irga5000 [103]

Answer:

It will take her 3 hours to read 120 pages.

Step-by-step explanation:

The number of pages read(y) after x hour can be modeled by a linear function in the following format:

$y = ax + b$

In which a is the number of pages read per hour and b is the initial number of pages read.

A straight line goes through (0, 0)

This means that when $x = 0, y = 0$

$y = ax + b$

$0 = a*0 + b$

$b = 0$

(0.5, 20)

When $x = 0.5, y = 20$

$y = ax$

$20 = 0.5a$

$a = \frac{20}{0.5}$

$a = 40$

The function in:

$y(x) = 40x$

According to the graph, which statement must be true?

It will take her 2 hours to read 60 pages.

$y(2) = 40*2 = 80$

Less than 2 hours for 60 pages, so this is false.

It will take her 3 hours to read 120 pages.

$y(3) = 40*3 = 120$

This statement is true.

It will take her 4 hours to read 180 pages.

$y(4) = 40*4 = 160$

More than 4 hours to read 180 pages. So false.

It will take her 5 hours to read 210 pages.

$y(5) = 40*5 = 200$

More than 5 hours to read 210 pages. So false.

8 0

3 years ago

For a party, you order 4 XXL pizzas & 2 boxes of breadsticks from Rock Star Pizza for $86. You return and order 6 XXL pizzas

Alex787 [66]

Answer:

XXL = $19.75

Box of Breadstick = $3.5

Step-by-step explanation:

Given that:

Let :

cost per XXL pizza = x

Cost per box of bread stick = y

4x + 2y = 86 - - - (1)

6x + 4y = 132.50 - - - (2)

From (1): Divide (1) by (2)

2x + y = 43 - - - (3)

y = 43 - 2x

Substitute y = 43 - 2x into (2)

6x + 4(43 - 2x) = 132.50

6x + 172 - 8x = 132.50

-2x + 172 = 132.50

-2x = 132.50 - 172

-2x = - 39.50

x = $19.75

y = 43 - 2x

y = 43 - 2(19.75)

y = $3.5

3 0

3 years ago

How much will you get paid if you work 28.5 hours for $7.75 per hour?

Wewaii [24]

Step-by-step explanation:

<h3>Answer:-</h3>

Here, Unitary Method is used. It tells:-

$\bf{1 \ hour =}$ $ $\bf{7.75}$

$\bf{28.5 \ hours =}$ $ $\bf{(7.75 \times 28.5)}$

$ $\bf{220.875}$ is the answer.

Hope it helps :D

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3 years ago

Arrange the parabolas with respect to the position of their vertices from left to right.

Amanda [17]

Vertices - n+f(x)=

it means that y=n, right? so it is algebra and it makes sense.

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dsp73

Well to find this answer, you want to divide $1.39 by 67.6. When you do this you get 0.0205. This is roughly 2 cents per ounce.

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3 years ago

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