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3 years ago

A pair of pants costs $80. If the sales tax is 8.25% how much is the sales tax? *

Mathematics

1 answer:

alexira [117]3 years ago

7 0

Answer:

Step-by-step explanation:

80 x 0.0825= sales tax

=6.6

= $6.60

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Answer:

Step-by-step explanation:

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Find the area of the circle... Round to the nearest tenth and include units in your answer

Fantom [35]

Answer:

452.4 cm

Step-by-step explanation:

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3 years ago

Solve the following triangle. Given A=51 degrees b=40 c=45

STALIN [3.7K]

Answer:

$a=36.87\ units$

$B=57.47^o$

$C=71.53^o$

Step-by-step explanation:

step 1

Find the length side a

Applying the law of cosines

$a^2=b^2+c^2-2(b)(c)cos(A)$

substitute the given values

$a^2=40^2+45^2-2(40)(45)cos(51^o)$

$a^2=1,359.4466$

$a=36.87\ units$

step 2

Find the measure of angle B

Applying the law of sines

$\frac{a}{sin(A)} =\frac{b}{sin(B)}$

substitute the given values

$\frac{36.87}{sin(51^o)} =\frac{40}{sin(B)}$

$sin(B)=\frac{sin(51^o)}{36.87}{40}$

$B=sin^{-1}(\frac{sin(51^o)}{36.87}{40})=57.47^o$

step 3

Find the measure of angle C

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

$A+B+C=180^o$

substitute the given values

$51^o+57.47^o+C=180^o$

$108.47^o+C=180^o$

$C=180^o-108.47^o=71.53^o$

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3 years ago

Find the exact value of the following.

qwelly [4]

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3 years ago

2.5d + 7.25 = 1 + 3.75d solve for d

dimulka [17.4K]

Answer:

Step-by-step explanation:

Subtract 1 from both sides. The equation becomes 2.5d + 6.25 = 3.75d

Subtract 2.5d from both sides. The equation becomes 6.25 = 1.25d

Divide 1.25 from both sides. You get 5 = d

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2 years ago