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3 years ago

Donnell practiced the piano 3 hours longer than Marcus.

Mathematics

1 answer:

emmasim [6.3K]3 years ago

5 0

Donnell practiced 7 hours while Marcus practiced 4 hours.

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Can you help me with this question i dont get it

Marizza181 [45]

The answer is c or A

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3 years ago

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The cost of pumpkin seeds is proportional to

zheka24 [161]

Answer:

Part 1) The unit rate is $\$0.25\ per\ ounce$

Part 2) A 56 ounce bag of pumpkin Seeds cost $14.00

Step-by-step explanation:

Part 1) What is the unit rate for the pumpkin seeds?

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Let

y ----> the cost of pumpkin seeds in dollars

x ---> the weight in ounces

we have

For x=24 ounces, y=$6

Find the value of the constant of proportionality k

$k=\frac{y}{x}$

substitute the values

$k=\frac{6}{24}=\$0.25\ per\ ounce$

The unit rate is the same that the constant of proportionality k

therefore

The unit rate is

$\$0.25\ per\ ounce$

Part 2) How much would 56. ounce bag of pumpkin seeds cost?

we know that

The linear equation is equal to

$y=0.25x$

For x=56 ounces

substitute in the linear equation and solve for y

$y=0.25(56)=\$14.00$

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3 years ago

Solve for x.<br> 2x + 4<br> 4x - 88<br> x = [?]

baherus [9]

Solve for x.
2x + 4= 8
4x - 88 = -352
x = [?]

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3 years ago

If a set of school supplies cost $6.70, how much change do you get from $10.00?

aivan3 [116]

6.70-10.00=3.30
So you get $3.30 as change

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3 years ago

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Which shows the use of the associative property?

irina1246 [14]

Answer:

The Second One or B. You were correct.

Step-by-step explanation:

The associative property is when the numbers of an equation stay the same, but the parentheses move.

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2 years ago