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Licemer1 [7]
2 years ago
8

What is the value of x, if the equation 2(x + 60) + 2(30) = 200

Mathematics
1 answer:
lawyer [7]2 years ago
5 0
X= -530

This is because:

2(x+60)+2(30)=200
•distribute the 2s into each parentheses
2x+1200+60=200
•combine like-terms
2x+1260=200
•isolate 2x by subtracting 1260 from both sides of the equation
2x=200-1260
•subtract 1260 from 200
2x= -1260
•divide both sides by 2 so you can have x all alone
2x/2= -1260/2
Hence
x= -530
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A photograph has a width of 8 cm and a length of 3x cm.
enyata [817]
W*l=A

w=8
l=3x
8*3x= A

That would be the equation 
3 0
3 years ago
Solve the system <br> 5x+3y=-9 &amp;- 2x+y=8
lianna [129]
5x+3y=-9
-2x+y=8

The first step is the trickery (and quite frankly, hardest to explain) part. You need to multiply one equation by a number that will create one variable to be the negative version of the other...(Confusing, right? Don't worry, I'll show you)

We are going to solve for X first.

We will multiply the second equation by -3
5x+3y=-9
-3(-2x+y)=(-3)8

Now simplify:
5x+3y= -9
6x-3y= -24

Now combine the two equations (add them together)
11x= -33
Divide by 11
X=-3

Now plug X in to one of the first equations:
5(-3)+3y= -9
-15+3y =-9
3Y= 6
Y= 2


So your final answer is:
x= -3
Y= 2

Hope this helps!
3 0
3 years ago
Read 2 more answers
304001 in expanded form
allsm [11]

Answer:

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Step-by-step explanation:

Expanded form is used to show the mathematical values of numbers.

304001 in expanded form is 300,000 + 4,000 + 1.

There are 3 hundred thousands, 4 thousands, and one one.

5 0
3 years ago
the manager at a hotel wants to know how often do his costomers rent boats at the nearby lake.Which sampling method will give va
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6 0
3 years ago
4 to the second power divided by (3 + 1)
Citrus2011 [14]

Answer:

4

Step-by-step explanation:

3 + 1 = 4

4 to the second power / 4 is 4

5 0
3 years ago
Read 2 more answers
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