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algol13
2 years ago
9

I NEED A 100% ACCURATE RIGHT ANSWER ASAP NO LINKS !!!

Mathematics
2 answers:
Virty [35]2 years ago
7 0

it's 8=8 meaning it is always true, and infinity.

hoa [83]2 years ago
4 0

Answer: all real num.

Step-by-step explanation:

4(a+2) = 8+4a

4a+8 = 8+4a

It can be all real number.

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5x+y=-10 4x-7y=-8 Substition Method (Show it step by step please!)
Fynjy0 [20]

\left\{\begin{array}{ccc}5x+y=-10&|\text{subtract 5x from both sides}\\4x-7y=-8\end{array}\right\\\left\{\begin{array}{ccc}y=-5x-10&|\text{substitute to the second equation}\\4x-7y=-8\end{array}\right\\\\4x-7(-5x-10)=-8\qquad\text{use distributive property}\\\\4x+(-7)(-5x)+(-7)(-10)=-8\\\\4x+35x+70=-8\qquad\text{subtract 70 from both sides}\\\\39x=-78\qquad\text{divide both sides by 39}\\\\\boxed{x=-2}\\\\\text{Put the value of x to the first equation}\\\\y=-5(-2)-10\\\\y=10-10\\\\\boxed{y=0}

Answer:\ \boxed{x=-2\ and\ y=0}

3 0
3 years ago
Read 2 more answers
A house purchased for $216,500 gains 2% of its value every year. If this growth rate continues, in how many years will the house
NikAS [45]

Answer: 36 years

Step-by-step explanation:

You can use the Rule of 72 to calculate how long it might take the house to double in value.

The Rule of 72 works by dividing 72 by the interest rate as a whole number and the result will be a rough estimate of the time in years it will take for the investment to double in size:

= 72 / 2

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3 0
3 years ago
12 things that has energy
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8 0
3 years ago
Read 2 more answers
The sum of a number divided by 2 and 7 is equal to 3
n200080 [17]
I would say no but i don't know how to do your problem by how your describing it sorry :(
7 0
3 years ago
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And outdoor deck is 7 feet wide. The perimeter of the deck is 64 feet. What is the length of the deck?
vova2212 [387]
Well perimeter is lengthx2 and widthx2 so   7x2=14 
then 64-14=50
50÷2= 25 

length=25
4 0
3 years ago
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