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Goryan [66]
2 years ago
9

The price of a cup of coffee was $2.75 yesterday. Today, the price fell to $2.40. Find the percentage decrease. Round your answe

r to the nearest tenth of a
percent.
Mathematics
1 answer:
Fed [463]2 years ago
8 0

Answer: (2.75-2.40)/(2.75) * 100 [Before rounding to the nearest tenth]

Step-by-step explanation:

Formula for percentage decrease = (old-new)/(old) * 100

so substituting in, you get (2.75-2.40)/(2.75) * 100

From here, you can just plug this into a calculator (don't have on me rn)

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3 years ago
LA and B are vertical angles. If mZA = then find the value of x. (7x – 27) and m B = (3x + 29)°,
zhuklara [117]

we know that

Vertical angles are congruent angles

that means

substitute the given values

(7x – 27)=(3x + 29)

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7x-3x=29+27

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x=14

part b)

We know that

Supplementary angles are angles that their sum is equal to 180 degrees

so

A+B=180

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5x+25+x+17=180

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4 0
2 years ago
HELP PLEASE!!!!!!! This is due tomorrow. 20 points for this.
gogolik [260]

Answer:

x=16.75 y=4.5

Step-by-step explanation:

first turn the first trapezoid sideways so the side that says 8 matches with the side that says 10. This is the proportion. 8:10. The bottom of the first trapezoid says x+2. This matches with the side that says 15. Because the side that says 15 is on the bigger trapezoid, multiply by ten. Then multiply the other trapezoid by 8. We get an equation that looks like. 8x+16=150 Simplify and 8x=134 divide and we get x=16.75. Do the same for the side with y. 8y-24=50. 8y=36 y=4.5. There you have it.

5 0
4 years ago
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