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3 years ago

Which expression shows the amount would you pay if your lunch bill is X and you leave(pay) a 15% tip?

Mathematics

1 answer:

ddd [48]3 years ago

8 0

Answer:

Step-by-step explanation:

(b) is correct. x represents the bill and 0.15 represents the 15% tip on that bill.

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Which expression is equivalent to 5x + 5y + 5y?

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Answer:

5x + 10y

Step-by-step explanation:

5x + 5y + 5y = 5x + 10y

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The side of a square is 2.5 cm. Find its perimeter and area.

Neko [114]

Answer:

Perimeter = 10 cm

Area = 6.25 cm²

Step-by-step explanation:

$\bf \: Given :$

$\sf \: Side \: of \: the \: square = 2.5 \: cm$

$\bf \: To \: find:$

$\rightarrow \sf \: Perimeter$

$\sf\rightarrow Area$

$\bf \: Solution :$

$\rm \: First \: w e \: need \: to \: find \: out \: the \: perimeter \: o f \: it.$

So to find the Perimeter of the square, we'll use this formula :

$\boxed{ \sf\longrightarrow \: Perimeter = 4 \times side}$

$\bf \: Step \: 1 : \rm \: Put \: the \: value \: of \: side \: of \: the \: square :$

$\sf\longrightarrow \: Perimeter = (4 \times 2.5)cm$

$\bf \: Step\;2 : \rm Multiply :$

$\sf\longrightarrow \: Perimeter = 10 \: cm$

Hence, the perimeter would be 10 cm .

$\rule{225pt}{2pt}$

$\sf \: Now,\; let's\; find \: the \: Area .$

We know that the formula of Area to find the square is,

$\boxed{ \sf \longrightarrow \: Area = (side) {}^{2} }$

Note : The answer would always be in cm².

$\bf Step\; 1 :\rm Put\; the\; value \; of\; side \; of \; the\; square :$

$\sf\longrightarrow{Area} = (2.5) {}^{2} \: cm {}^{2}$

$\sf\longrightarrow{Area} = (2.5 × 2.5 ) \: cm {}^{2}$

$\bf \: Step\;2 : \rm Multiply :$

$\longrightarrow\sf \: Area = 6.25 \: cm {}^{2}$

Hence, the area of the square would be 6.25 cm².

$\rule{225pt}{2pt}$

I hope this helps!

Let me know if you have any questions.

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Find the distance between points with coordinates (3, -4) and (-6, 5)

netineya [11]

Answer:

√≈9.055385138137417

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Find the mean of the data set. 85 24 33 64 91 72 17 38

ziro4ka [17]

Answer:

The mean is 53.

Step-by-step explanation:

Add all of the numbers together to get 424.

Divide the sum of the numbers by the amount of numbers to get the mean

424/8=53

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