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Wewaii [24]
4 years ago
15

1) 2a + a + 3b

Mathematics
1 answer:
ivolga24 [154]4 years ago
5 0

Answer:

1) 3a + 3b

2) 3a + 4b

3) 5a +3c

4) 3a + 3b

5) 7a + 2b

6) 4a + 4c

7) 7c +4d

8) 2a + 6b

Step-by-step explanation:

1) 2a + a + 3b  = 3a + 3b

2) 2a + 2b + a + 2b  = 3a + 4b

3) 3a + 2c + 2a + c  = 5a +3c

4) a + 2b + 2a + b  = 3a + 3b

5) 4a + b + 3a + b  = 7a + 2b

6) 3a + 2c + 2c + a  = 4a + 4c

7) 3d + 2c + d + 5c  = 7c +4d

8) a + 2b + a + 3b + b = 2a + 6b

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I’m not to sure my my guess is zero because it is not going up or down
7 0
3 years ago
I want the answer for this question and how you got it please please!
Olin [163]

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8 0
3 years ago
You cut a circular hole 1/4 -inch in diameter in a piece of cardboard. With the cardboard 30 inches from your face, the Moon fit
Stolb23 [73]

Answer:

The Moon's diameter is greater than 1,500 miles

Step-by-step explanation:

we know that

1\ mile=63,360\ inches

1,500\ miles=1,500*63,360=95,040,000\ inches

240,000\ miles=240,000*63,360=15,206,400,000\ inches

by proportion

Find the Moon's diameter

Let

x-----> the Moon's diameter in inches

\frac{x}{15,206,400,000}=\frac{0.25}{30}\\ \\x= 15,206,400,000*0.25/30\\ \\x=126,720,000\ inches

Compare

126,720,000\ inches> 95,040,000\ inches

therefore

The Moon's diameter is greater than 1,500 miles

3 0
3 years ago
A sample of bacteria is growing at a rate of 8% per hour compound continuously. How many hours will it take for the sample to do
Anettt [7]

Answer:

The sample would double in 9 hours

Step-by-step explanation

The number of hours it will take for the sample to double can be found using the 72 rule.

The 72 rule is such that a growth rate would double itself by it is used in dividing the number 72 as shown below:

number of hours =72/8=9 hours

The number of hours it would take the sample to double is 9 hours as computed above.

6 0
4 years ago
Select the better deal in the pair. Then give the unit rate for the better deal.
Mekhanik [1.2K]

Answer:182/7g

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and you want the lowest cost so a.

4 0
3 years ago
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