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noname [10]
3 years ago
14

Please help, dont understand

Mathematics
1 answer:
Artemon [7]3 years ago
3 0

Answer:

D

Step-by-step explanation:

D because it is always true

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Albert biked 3 times the number of miles Bob did yesterday. They biked 72 miles altogether. How many miles did Albert bike ?
erastova [34]

Hey there!

To start, first let's assign a variable to each person:

A to represent the miles biked by Albert

B to represent the miles biked by Bob

Now, let's set up a system of equations:

A=3B

A + B = 72

Next, use substitution (plug 3B in for A in the second equation since A is equal to 3B):

3B + B = 72

Then, simplify and solve:

3B + B = 72

(combine like terms)

4B = 72

(divide both sides by 4)

B=18

Now that you know the amount that Bob biked, you can plug his miles into the equation for Albert: A=3B

B=18

A=3(18)

A= 54

Your final answer would be that Albert biked 54 miles.

Hope this helps!

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3 years ago
There are 8 blue marbles, 3 red marbles, and 4 yellow marbles in a bag. What is the probability of selecting a purple marble on
andreyandreev [35.5K]

Answer:

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Step-by-step explanation:

there is only blue marbles, yellow marbles, and red marbles. there are no purple marbles so you’d be unable to pull out a purple one no matter how many times you tried. so the probability would be 0

6 0
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Adrians recipe for raisin muffins cost for 1 3/4 cup of raisin muffins Adrian want to make 2 1/2 batches for a bake sale how man
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