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3 years ago

PLEASE HELLLLPPPP MEEEE

Mathematics

1 answer:

Norma-Jean [14]3 years ago

3 0

Answer:

$22.47

Step-by-step explanation:

Shirts are on sale for 30% discount

The original price of one shirt is $15

Discount = percentage discount/100 × original price = $\frac{30}{100}$ × $15 = $4.5

The selling price of one shirt is therefore;

$15 - $4.5 = $10.5

For two shirts, the selling price is 2 × $10.5 = $21

Tax = Percentage tax/100 × selling price = $\frac{7}{100}$ × $21 = $1.47

The total cost of these two shirts at sale price = $21 + $1.47 = $22.47

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2 years ago

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Four time a number r plus half a number s equals 12. Twice the number r plus one fourth of the numbers s equals 8. What are the

Snezhnost [94]

The system of equations have no solution.

Explanation:

The equations are $4r+\frac{1}{2}s=12$ and $2r+\frac{1}{4} s=8$

To find the two numbers, let us solve the equations using substitution method.

From the equation $2r+\frac{1}{4} s=8$ , let us determine the value of r,

$\begin{aligned} 2 r+\frac{1}{4} s &=8 \\ 2 r &=8-\frac{1}{4} s \\ r &=\frac{1}{2}\left(8-\frac{1}{4} s\right) \\ r &=4-\frac{1}{8} s \end{aligned}$

Let us substitute the value of r in $4r+\frac{1}{2}s=12$ , we get,

$\begin{aligned} 4\left(4-\frac{1}{8} s\right)+\frac{1}{2} s &=12 \\ 16-\frac{1}{2} s+\frac{1}{2} s &=12 \\ 16 &=12 \end{aligned}$

which is not possible.

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3 years ago

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lozanna [386]

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B) First, calculate fligth time (using the vertical motion) and then calculate the horizontal movement.

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3 years ago

PLEASE HELLLLPPPP MEEEE​

PLEASE HELLLLPPPP MEEEE