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pav-90 [236]
3 years ago
7

Factor the expression below. 4x2 - 1

Mathematics
1 answer:
Mila [183]3 years ago
4 0

Answer:

(2x-1)(2x+1)

Step-by-step explanation:

the answer is c

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The first painter can finish a paint job in 2 hours. The second painter can finish the same job in 8 hours. How long would it ta
vampirchik [111]

Answer: 1\frac{3}{5} hrs

<u>Step-by-step explanation:</u>

1st painter:  \frac{1}{2}

2nd painter: \frac{1}{8}

1st + 2nd = Together

\frac{1}{2} + \frac{1}{8} = \frac{1}{x}

\frac{1}{2}(8x) + \frac{1}{8}(8x) = \frac{1}{x}(8x)

4x + x = 8

5x = 8

 x = \frac{8}{5}

    = 1\frac{3}{5}

8 0
3 years ago
The sum of a number y and 9 is greater than 10​
astra-53 [7]

Answer:

y</= 2

Step-by-step explanation:

9 + 1 = 10

9 + 2 < 10

y = anything < 2

4 0
3 years ago
A rectangle has an area of 822.4 square miles and a base of 32 miles. What is the height?
JulijaS [17]
I believe it would be 25.7 miles. I just divide 822.4 by 32.
4 0
3 years ago
Read 2 more answers
On Saturday, the Gomez family left home to a resort in Maine. The drove at an average rate of 48 mph. ON Thursday they went back
tankabanditka [31]
If we set the unknown distance (in miles) as x, then we set up an equation according to the data, we can solve for x.

Time taken to go to resort : x/48
Time taken to return : x/40
Total time = x/48+x/40 = 11
Solve for x
common multiple between 48 and 40 = 240
so 
5x/240 + 6x/240 = 11
(5x+6x)/240 = 11
11x  = 11*240, => x=240
Distance from home to resort is 240 miles
4 0
3 years ago
A) Find the area<br>B) Find the perimeter ​
Archy [21]

Answer:

A)

A1= 64

A2= 40

B)

P= 56(of whole shape)

Step-by-step explanation:

A squares area is a side squared so 8^2= 64, and it is also shown that a side of the square is the base of the parallelogram. The area of a parallelogram is b*h so (square side)(8) * height(5)= 40.

Since a parallelograms opposite sides are congruent, 8+8=16, and the other two sides need to be congruent and equal to 40-16(24), therefore the sides are both 12.

Then to calculate the perimeter just count up the side lengths, 8+8+8+12+8+12=56

4 0
3 years ago
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