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Marizza181 [45]

3 years ago

6

Define a variable, write an inequality, and solve each problem. # 30 Twice a number is more than the sum of that number and eigh

t.

1 answer:

laiz [17]3 years ago

8 0

n= number

2n > n+8

subtract n from each side

2n-n > n+8-n

n > 8

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-x+ 2y = 10<br> -3x+By = 11

adoni [48]

Answer:

change the equation into one variable.

2 y equals 10 + x

y equals 5 + x by 2

now put that into the second equation

-3x + b parentheses 5 + x / 2 equals 11

-3x+b(5+ x/2)

-3x + b5 + bx/2 = 11

8 0

2 years ago

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Find an expression which represents the sum of (-8x+7y)(−8x+7y) and (2x-2y)(2x−2y) in simplest terms.

Yakvenalex [24]

Answer:

(-8x+7y)(−8x+7y)+(2x-2y)(2x−2y)= simplified - 68x^2+53y^2−120xy

I hope this helps ! <3

Step-by-step explanation:

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2 years ago

Half the difference of eight times a number and twelve

iris [78.8K]

Answer:

$\frac{8x-12}{2}$

Step-by-step explanation:

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3 years ago

The school that Stefan goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 se

aniked [119]

52 - 38 is 14
since on the second they sold one more child ticket then the first day we know the extra money is the price of a child ticket
so 14 is how much a child ticket is
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3 years ago

(1, 4) is a solution to the system that includes y=3x + 1 and y = -x + 5.

SIZIF [17.4K]

Answer:

yes

Step-by-step explanation:

y=3x + 1

y = -x+5

Check if (1,4) solves the first equation

4 = 3(1)+1

4 = 3+1

4=4

This is true

Check the second equation

4 = -1+5

4=4

This is true

(1,4) is a solution to the system of equations

7 0

2 years ago

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