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3 years ago

Madi has $8.80 in pennies and nickels.

1 answer:

7 0

Let p = number of pennies.
Let n = number of nickels.

We are given that n= 2p and the total value is $8.80.

We know that a penny = $0.01 and that a nickel = $0.05.

So $0.01p + $0.05n = $8.80.

Substitute 2p for n:
$0.01p + $0.05*2p = $8.80

$0.01p + $0.10p = $8.80

$0.11p = $8.80

p = 80
So n = 2p = 2*80 = 160

Thus there are 80 pennies ($0.8) and 160 nickels ($8.00). The value of all the coins is $8.80.

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You roll three die. what is the probability that 5 will not appear on the die?

castortr0y [4]

No of out comes =216
favorable outcome=3
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3 years ago

How do you solve for x? 6x+7=6

skelet666 [1.2K]

6x+7=6

Subtract both sides by 7
6x+7-7=6-7

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Divide both sides by 6 to isolate x
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3 years ago

Read 2 more answers

A cubical container measures 9 ft on each edge. What does it cost to fill the container at $2.58 per cubic ft?

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Answer:

1,880.82

Step-by-step explanation:

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3 years ago

Chole is baking cookies to sell in boxes of 12 cookies.If she bakes 112 cookies, calculate the number of boxes she can fill and

Grace [21]

Answer:

She can fill 9 boxes, and will have 4 cookies left over.

Step-by-step explanation:

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3 years ago

Write a system of equations to describe the situation below, solve using an augmented matrix, and fill in the blanks.This mornin

Georgia [21]

Answer:

$\begin{gathered} \text{ A tray of club sandwiches cost \$9} \\ A\text{ tray of vegetarian sandwiches cost \$6.} \end{gathered}$

Step-by-step explanation:

Given the information, create the following augmented matrix:

The first order was for 1 tray of club sandwiches, at a cost of $9. The second-order, which cost $69, was for 5 trays of club sandwiches and 4 trays of vegetarian sandwiches.

$\begin{gathered} 5x+4y=69 \\ x=9 \end{gathered}$

Into an augmented matrix:

$\begin{bmatrix}{5} & {4} \\ {\placeholder{⬚}} & {1}\end{bmatrix}\begin{bmatrix}{69} & {} \\ {9} & {}\end{bmatrix}$

Solve.

Let x be the cost of a tray of club sandwiches.

Let y be the cost of a tray of vegetarian sandwiches.

$\begin{gathered} x=9 \\ Substitute\text{ on the first equation} \\ 5(9)+4y=69 \\ 4y=69-45 \\ y=\frac{24}{4} \\ y=6 \end{gathered}$

8 0

1 year ago