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Andreyy89
4 years ago
11

Solve each equation by factoring, PLZ HELP!!

Mathematics
1 answer:
Sidana [21]4 years ago
5 0
1) x^2=64 is the same as x=the root of 64 which gives us: (+-)8

2) here you must us pq-formel as:

5m^2-5m=60

5m^2-5m-60=0

(m^2-5m-60)/5=0

m^2-m-12=0

m=0,5(+-) the root of 0,25+12

m=0,5(+-)3,5

m1=0,5+3,5

m2=0,5-3,5

15) x^2=7x

x^2-7x=0 here there is two x, so:

x(x-7)=0

x1=0

x2=7
<span>
Here you can only use PQ formula in all the others, just as I did in the question number 2</span>
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Help now solve it but show your work too
marin [14]

Answer:

-1/6

Step-by-step explanation:

1/6-1/3

1/6-1×2/3×2

1/6-2/6

1-2/6

-1/6

5 0
3 years ago
Read 2 more answers
If the length of the side of a square is 3×-y what is the area of the square in terms of x and y
soldier1979 [14.2K]
(3x -y)(3x-y )= 9x^2 - 6xy + y^2
5 0
3 years ago
PLEASEE HELP ME!!!!
Svet_ta [14]

The angle would be 35 degrees (the complement is 90-35 = 55 degrees.)  Hope this helps!

3 0
3 years ago
Read 2 more answers
Sean is helping his dad build a tiled walkway in their backyard. The walkway will be 69 feet long and 2 feet wide. The local har
Flura [38]
First we should figure out how many times 2 goes into 69,(because each tile is 2 feet long) and I am going to do that by dividing 69 by 2. I got 34.5, so we can just say 35 to make it easier. So we now know we need 35 tiles, but they come in boxes of 6, so we will need to divide 35 by 6. It didn't make a full number (it was 5.833) but we need a full number of tiles so we will round up.

Our final number of how many boxes of tiles is 6.
6 0
3 years ago
Read 2 more answers
What is the answer 2(4y+1)=3y
SCORPION-xisa [38]
2(4y+1) = 3y. We need to solve for y.
First let's get ride of the parenthesis by developing 2(4y+1). This means to multiply 2 by 4y and 2 by 1, and add them.
2(4y+1) = 2*4y + 2*1 = 8y + 2
So 2(4y+1)=3y
8y+2 = 3y
Then you subtract 8y from each side to have the variables on a side and the numbers on the other:
3y - 8y = 8y + 2 - 8y
-5y = 2
Then you divide each side by -5 to get the variable y alone on a side and its value on the other:
(-5y)/-5 = 2/-5
y = -2/5

You can re-check your answer (very important):
2(4y + 1) = 2(4*-2/5 + 1) = -1.2
3y = 3 * -2/5 = -1.2
So 2(4y+1)=3y= -1.2
The answer has been approved.

Hope this Helps! :)
4 0
4 years ago
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