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3 years ago

Can I take a photo of my question lol

Mathematics

1 answer:

Vikentia [17]3 years ago

3 0

Yes, you can take a photo of your question. You push the camera button at the bottom of the page.

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Solve for x:<br><br> HELPP PLEASE WILL MARK BRAINLIEST :))))

balu736 [363]

Answer: X = 20

Step-by-step explanation:

7x - 99 = 2x + 1 --Take 2x from both sides

-2x -2x

5x - 99 = 1 -- add 99 to both

+99 +99

5x = 100 --Divide by 5

÷5 ÷5

x = 20

3 0

3 years ago

Read 2 more answers

Dave and Sandy Hartranft are frequent flyers with a particular airline. They often fly from City A to City B, a distance of 756

horsena [70]

Answer:

Plane = 441 mi/h; wind = 63 mi/h

Step-by-step explanation:

distance = rate × time

Let p = the plane's speed in still air

and w = the wind speed . Then,

p + w = speed with wind

p - w = speed against wind

We have two conditions:

(1) 756 = (p - w) × 2

(2) 756 = (p + w) × 1.5

Distribute the constants (3) 756 = 2p - 2w

(4) 756 = 1.5p + 1.5 w

Multiply Equation (3) by 3 (5) 2268 = 6p - 6w

Multiply Equation (4) by 4 (6) 3024 = 6p + 6w

Add Equations (5) and (6) 5292 = 12p

Divide each side by 12 (7) p = 441 mi/h

Substitute (7) into Equation(3) 756 = 882 - 2w

Add 2w to each side 2w + 756 = 882

Subtract 756 from each side 2w = 126

Divide each side by 2 w = 63 mph

The plane's speed in still air is 441 mi/h.

The wind speed is 63 mph.

Check:

(1) 756 = (441 - 63) × 2 (2) 756 = (441 + 63) × 1.5

756 = 378 × 2 756 = 504 × 1.5

756 = 756 756 = 756

8 0

3 years ago

The price of a fan is $15. This price is 27% lower than last week.

Goshia [24]

The price of fan was 20 Dollars 55 cents last week.

Step-by-step explanation:

Let,

The price last week = x

As the price is 27% lower than last week, therefore

(100%-27%) * Price last week = $15

73% * x = 15

Solving the percentage;

$\frac{73}{100}*x=15\\ Multiplying\ both\ sides\ by\ 100\\100*\frac{73x}{100} = 15*100\\73x=1500\\Dividing\ both\ sides\ by\ 73\\\frac{73x}{73} = \frac{1500}{73} \\x= 20.55$

The price of fan was 20 Dollars 55 cents last week.

Keywords: Percentage, multiplication.

Learn more about percentages at:

#LearnwithBrainly

5 0

2 years ago

Identify the type of function represented by f(x) 4 2^x

Romashka [77]

B bc the coefficient is greater than 1. if, for example it was 0.5 it would be a

5 0

3 years ago

Read 2 more answers

There are 144 animals at a pet store. 56 are cats; the rest are dogs. what fraction of all of the animals are dogs?

svlad2 [7]

144 - 56 = 88

88/144 simplified to -----> 11/18

4 0

3 years ago

Read 2 more answers