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Sonbull [250]
1 year ago
7

NEED HELP FAST WILL GIVE BRAINIEST

Mathematics
2 answers:
vladimir1956 [14]1 year ago
5 0

Answer:

x^2 + 8x - 65 = 0.

Step-by-step explanation:

In order to solve the side of the enlarged area of 81 square inches, we use the equation in solving the area of a square. Area = side^2.

the increase in side will be x, so (4+x)^2 = 81, x^2 + 4x + 4x + 16 = 81

x^2 + 8x + 16 - 81 = 0

x^2 + 8x - 65 = 0.

  Hoped this helped mark Brainliest!

almond37 [142]1 year ago
4 0

to solve the side of the area of 81 square inches

use the equation in solving the area of a square. Area = side^2.

the increase in side will be x, so (4+x)^2 = 81, x^2 + 4x + 4x + 16 = 81

x^2 + 8x + 16 - 81 = 0

x^2 + 8x - 65 = 0.

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During a sale, 20-cent candy bars were sold at 3 for 50 cents. How much is saved on 9 bars?
Mazyrski [523]

Answer:

Step-by-step explanation:

$0.30

Step-by-step explanation:

1 bar of candy = $0.20

3 bars of candy = $0.50

To solve, multiply for both:

If you pay for each candy bar individually, they each cost $0.20. Multiply 9 with 0.20:

9 x 0.20 = $1.80

If you pay for the candy bars by 3's, they cost $0.50 each pack. Divide 9 with 3, then multiply by 0.50:

9/3 = 3

3 x 0.50 = $1.50

Subtract the total cost of the individual from the pack:

$1.80 - $1.50 = $0.30

. $0.30 is your answer.

8 0
2 years ago
ASAP NO WORK JUST ANSWER
KIM [24]

Answer:

c

Step-by-step explanation:

4 0
1 year ago
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A race car is driven by a professional driver at 99 . What is this speed in and ? 1 mile = 1.61 kilometers 1 hour = 60 minutes E
Lena [83]

Let us assume that the given speed is in miles per hour.

A race car is driven by a professional driver at 99 mph.

We have to find the speed in kilometer per hour and kilometer per minutes

As 1 mile = 1.61 km

So, 99 miles = 99\times1.61=159.39 kmph

1 km per hour = 0.0166 km per minute

So, 159.39 kmph = 159.39\times0.0166=2.6458 km per minute

Hence, The speed is equivalent to 159.39 kilometers /hour, or 2.645 kilometers/minutes .


7 0
1 year ago
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A barber shop produces 96 haircuts a day. each barber in the shop works 8 hours per day and produces the same number of haircuts
Finger [1]
We know that
A barber shop produces 96 haircuts a day----------> <span>8 hours per day
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if </span><span>if the shop's productivity is 2 haircuts per hour of labor
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the answer is
6 </span><span>barbers</span>
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2 years ago
A new car is purchased for 20700 dollars. The value of the car depreciates are 11% per year. What will the value of the car be,
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Answer: $5,744.61

Step-by-step explanation:

year 1 = -2,277

year 2 = -2026.53

year 3 = -1803.61

year 4 = -1605.21

year 5 = -1428.64

year 6 = -1271.49

year 7 = -1131.62

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you are subtracting 11% from each year.

5 0
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