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alexandr402 [8]
3 years ago
9

I don't understand this problem

Mathematics
1 answer:
DerKrebs [107]3 years ago
5 0
The board A is 8 inches. If you use 3/4 of an 8-foot-board. Then you're left with 2 feet.
3    6
-- = --
4    8
8 - 6 =2
(8= the length of the board)
1/3 of 2 feet = 8 inches
1    24   24
-- x -- = --- = 8 inches
3    1      3
(24= the equal amount of inches in a 2-foot-board)
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What is the solution to the following system of equations?<br> y = x2 + 10x + 11<br> y = x2 + x − 7
marishachu [46]
Hello,

y=x²+10x+11
y=x²+x-7

==>x²+10x+11=x²+x-7
==>9x=-18
==>x=-2

Sol={(-2,-5)}

8 0
4 years ago
What is the equation of a line that its parallel to -3x+4y=4 and passes through the point (4,0)?
anzhelika [568]

Answer:

y=3/4x-3

Step-by-step explanation:

Okay so to be parallel to an equation of another line, the line must have the same slope but a different y-intercept. First, you need to find the slope of the equation -3x+4y=4. The equation must be in y=mx+b format, so you first move -3x to the right by adding it on both sides, leaving you with 4y=3x+4. Next, you divide 4y by 4 in order to isolate y and do that on the other side. Now, you have y=3/4x+1.

To find the equation of the new line, you must put the point and slope into point slope form: y-y1=m(x-x1). In the point (4, 0), 4 would be x1 and 0 would be y1. so, the new equation is y-0=3/4 (x-4). now, distrubute the 3/4, leaving you with y=3/4x-3. This is correct since the slope remains the same in both equations with a different y-intercept. To check deeper, you could place point (4, 0) on a graph and then rise 3, run 4 until you get the line :) hope this helps

7 0
3 years ago
Find the difference -10-(-7)=
Lelu [443]

Answer:

-3

Step-by-step explanation:

Since the - in -7 and the subtraction sign - are the same, you have to group them so now it is + (positive). -10 + 7 = -3

4 0
3 years ago
Could someone please help me? Will mark brainlist!
Musya8 [376]
25 percent increase
Hope this helps
7 0
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sertanlavr [38]
Well we would need to know how old but if Kim is 2 Years Older that kinda means that she can do more .-.
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