3 years ago

I was sick the day that the class went over how to do this and I don’t know how to do it.

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

6 0

You first need to know the equation A=pi x r^2. The equation you need for this problem is pi (3.14) x 3^2

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Two friends shared

Sveta_85 [38]

The 1 and 1 represent the 2 friends.

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4 years ago

Margaret drove to a business appointment at 80 mph. Her average speed on the return trip was 70 mph. The return trip took her 1/

Gnoma [55]

Margaret traveled 80 miles to the appointment.

Step-by-step explanation:

Given,

Speed while driving for appointment = 80 mph

Speed while coming back = 70 mph

Let,

x be the time taken for the trip

y be the distance covered

Distance = Speed*Time

y = 80x Eqn 1

Time taken in return trip = x+1/7

y = 70(x+1/7)

$y=70x+10$ Eqn 2

Putting value of y from Eqn 1 in Eqn 2

$80x=70x+10\\80x-70x=10\\10x=10$

Dividing both sides by 10

$\frac{10x}{10}=\frac{10}{10}$

x = 1 hour

Putting x = 1 in Eqn 1

$y=80(1) \\y=80$

Margaret traveled 80 miles to the appointment.

Keywords: linear equation, substitution method

Learn more about substitution method at:

#LearnwithBrainly

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4 years ago

Mr James sells saltfish at his shop. On a certain day five people bought 1/4 pound of saltfish each, while four people bought 1/

kompoz [17]

5 x 1/4 = 1 1/4 or 1.25
4 x 1/2 = 2
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NikAS [45]

Answer:

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Step-by-step explanation:

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3 years ago

What expression factors to 8(x+2)

liq [111]

If you would like to solve 8 * (x + 2), you can do this using the following steps:

8 * (x + 2) = 8 * x + 8 * 2 = 8 * x + 16

The correct result would be 8 * x + 16.

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3 years ago

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