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3 years ago

Janessa bought for 4 stamps for $1.48 at this rate how much would 10 stamps cost

Mathematics

1 answer:

atroni [7]3 years ago

3 0

Answer:

$3.70

Step-by-step explanation:

divide 1.48 by 4 = .37

multiply by 10

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skad [1K]

$2x^2-7=74\\
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3 years ago

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Step-by-step explanation:

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3/4 ÷ 1/5
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3 years ago

Rachel's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Rachel $4.30 per pound, and typ

Sergio039 [100]

Step 1

Write out the system of equations

$let\text{ x represent pound of Type A coffee and y represent Type B coffee pound }$ $\begin{gathered} 4.30x+5.9y=738.80----(1) \\ x+y=148---(2) \end{gathered}$

Step 2

Find the value of one pound of type A coffee, x

$\begin{gathered} From\text{ equation 2; x+y=148} \\ Therefore \\ y=148-x \end{gathered}$ $\begin{gathered} Substitute\text{ for y in equation 1} \\ 4.30x+5.9(148-x)=738.80 \\ 4.30x+873.2-5.9x=738.80 \\ 873.2-738.80=5.9x-4.3x \\ 134.4=1.6x \\ x=84pounds \end{gathered}$

Therefore the answer will be;

$\begin{gathered} x+y=148 \\ 84+y=148 \\ y=64\text{ pounds} \\ \end{gathered}$

The pounds of type B coffee she used is 64pounds

The pounds of type A coffee she used is 84 pounds

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1 year ago