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dexar [7]
2 years ago
11

Simplify the expression: 7(3x + 5y)

Mathematics
2 answers:
user100 [1]2 years ago
5 0
I think the answer is 21x+35y
Nitella [24]2 years ago
4 0

Answer:

21x + 35y

Step-by-step explanation:

When doing these expression problems, you have to DISTRIBUTE

When distributing, you multiply the 7 on the OUTSIDE of the parentheses to the 3x and if you know 7x3 is 21 so it becomes 21x

Now we do the same thing to the 5y, we multiply the 7 by the 5y to get 35y

Since we can’t combine the terms since they have different variables, our final answer is 21x + 35y

Hope this helps and please award brainliest!

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Damm [24]

Answer:

there are 83 percent of books

5 0
2 years ago
Rational numbers that are not integers are?
Vladimir [108]
Any number that can be writen as a fraction example: 0.75, -15, 0, 9
6 0
3 years ago
What is the best measure of center for this data?
brilliants [131]

Answer:

The answer is A

Becaise Mode is not a measure of centre, and Mean is dramatically changed with the outli

I think that would be correct, Hope it helps!!!

3 0
2 years ago
Cheryl is moving to a new house. Her old house is 3 kilometers and 457meters from her new house. How many meters is her old hous
MrRissso [65]

Answer:

Her old house is 3000m+457m = 3457m from her new house.

Step-by-step explanation:

Conversion of units problems can always be modeled as a rule of three problem.

Rule of three problem:

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too. In this case, the rule of three is a cross multiplication

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease. In this case, the rule of three is a line multiplication.

In the case of a conversion of units problem, the measures are:

- the value in one unit

- the value in another unit

As the value of the first unit increases, so will the value of the second unit. It means that in a conversion of units problem, we will always have a direct rule of three.

The problem states that Cheryl's new house  is 3 kilometers and 457meters from her old house. The problem wants to know this distance purely in meters, so we have to convert 3km to meters. 1km = 1000m, so:

1km - 1000m

3km - xm

x = 1000*3

x = 3000m

Her old house is 3000m+457m = 3457m from her new house.

5 0
3 years ago
25 miles an hour equals how many meters per minute
aivan3 [116]
25 miles per hour equals 11.176 meters per second.
3 0
3 years ago
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