2 years ago

If R=5Z then 15Z=3Y, then R=? Show work please

Mathematics

1 answer:

Debora [2.8K]2 years ago

6 0

If R = 5z
Then 15 z = 3R so there given 15z=3Y soo R= 5 Y

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sarah spent a total of 10 on oranges and apples at the supet market. if she spent 3 dollars less for oranges than she did on app

beks73 [17]

Let's write 2 equations from the two statements given.

Sarah spent 10 dollars on both oranges and apples

Let the price of oranges be "x" and price of apples be "y", thus we can write:

$x+y=10$

Oranges cost 3 less than apples, thus we can say:

$y-3=x$

We can substitute this into the first equation and solve for y:

$\begin{gathered} x+y=10 \\ y-3+y=10 \\ 2y=10+3 \\ 2y=13 \\ y=\frac{13}{2} \\ y=6.5 \end{gathered}$

Thus, let's solve for x now,

$\begin{gathered} x=y-3 \\ x=6.5-3 \\ x=3.5 \end{gathered}$

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9 months ago

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Tanzania [10]

Answer:

Let

S= #small candles

L= #Large candles

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Step-by-step explanation:

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2 years ago

Boris bought 28 pounds of sugar for $11.

Drupady [299]

Answer:

about $2.54 per pound of sugar

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3 years ago

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irina1246 [14]

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2 years ago

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a mailing tube in the shape of cylinder has a height of 24 inches and a radius of 3 inches. what is the volume, in cubic inches,

TiliK225 [7]

ANSWER

The volume of the mailing tube is 678.6 square inches to the nearest tenth.

EXPLANATION

The volume of a cylinder is calculated using the formula;

$V=\pi \: {r}^{2} h$

Since the mailing tube is in the form of a cylinder, we use this formula to find its volume.

We substitute h=24 and r=3 to obtain,

$V=\pi \times {3}^{2} \times 24$

$V=216\pi {in}^{2}$

$V=678.6{in}^{2}$

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3 years ago