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kenny6666 [7]
2 years ago
8

Which expression is equivalent to (10 +7r−r2)+(−6r2−18+5r)

Mathematics
2 answers:
ArbitrLikvidat [17]2 years ago
5 0
Answer: -7r^2+12r-8
Explanation;
1. Combine -r^2 and -6r^2 to get -7r^2
2. Subtract 18 from 10 to get -8
3. Combine 7r and 5r to get 12r
vichka [17]2 years ago
4 0

Answer: after adding them -7r^2+12r-8

Step-by-step explanation: add them

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The ratio of SAMs age to hank is 5 to 3. If the sum of their age is 24. How old is is hank?
Serggg [28]
Lets consider SAM's age is 'x'  and Hank's age is 'y'
So as per given data Sam's age is 5/3 times of Hank's age
so x = 5/3 * y
3x = 5y --> equation 1
 and also sum of their ages is 24
so, x + y = 24
we need to find Hank's age (y)
so x = 24 - y
Now replace x value in equation 1
3(24-y) = 5y
72-3y = 5y
72 = 3y+5y
8y= 72
y= 72/8
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So the Hank's age is 9 years

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Step-by-step explanation:

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Alekssandra [29.7K]

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Step-by-step explanation:

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3 years ago
What is the absolute deviation for 62 in the data set?
valkas [14]
0 is the answer! that is because 62 is also the mean.


3 0
3 years ago
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2x + 3y = 5x - y complete the missing value in the solution to the equation
Leto [7]

Answer:

The missing value is(0,0)

Step-by-step explanation:

The complete question is:

2x+3y=5x-y

Complete the missing value in the solution to the equation.

( ,0)

<u>Solution:</u>

We have given:

2x + 3y = 5x - y

Combine the like terms:

2x-5x= -y-3y

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Both negative signs will be cancelled out by each other.

So we have,

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We have given y = 0

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3x= 0

Divide both sides by 3

3x/3 = 0/3

x = 0

y=0

Therefore missing value is(0,0)

4 0
3 years ago
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