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3 years ago

7

kirans mother gets a restaurant bill for $25. He has a coupon for 15% of the as the discount is applied she adds 20% as tip. Wha

t is the total after the discount and tip explain how or show resoning

1 answer:

Fofino [41]3 years ago

5 0

25 x .15 = 3.75
25 - 3.75 = 21.25
21.25 x .20 = 4.25
21.25 - 4.25 = $17 total

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: Find the approximate perimeter of the isosceles triangle A OPD.

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Step-by-step explanation:

The picture of the question in the attached figure

we have the coordinates

P(1,-6),D(4,3),O(7,-6)

The perimeter of triangle OPD is equal to

$P=OP+PD+OD$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the distance OP

we have

O(7,-6),P(1,-6)

substitute in the formula

$d=\sqrt{(-6+6)^{2}+(1-7)^{2}}$

$d=\sqrt{(0)^{2}+(-6)^{2}}$

$d_O_P=6\ units$

step 2

Find the distance PD

we have

P(1,-6),D(4,3)

substitute in the formula

$d=\sqrt{(3+6)^{2}+(4-1)^{2}}$

$d=\sqrt{(9)^{2}+(3)^{2}}$

$d_P_D=\sqrt{90}\ units$

step 3

Find the distance OD

we have

O(7,-6),D(4,3)

substitute in the formula

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$d=\sqrt{(9)^{2}+(-3)^{2}}$

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step 4

Find the perimeter

$P=6+\sqrt{90}+\sqrt{90}$

$P=6+9.49+9.49=24.98\ units$

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3 years ago