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Marat540 [252]
3 years ago
10

Factor completely 4x^2-1

Mathematics
2 answers:
kari74 [83]3 years ago
7 0

Answer:

4×^2-1=(2× +1)(2× -1)

Step-by-step explanation:

using a^2 - b^2 =(a+b)(a-b)

alina1380 [7]3 years ago
6 0

Answer:

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

Step-by-step explanation:

Difference of Squares: (ax + b)(ax - b) = (ax² - b²)

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Matthew is half as old as Alan. If the sum of their ages is 54, find their ages.
kompoz [17]

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26

Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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6 0
3 years ago
A city places 18 trash cans along a 13.5 miles stretch of beach. The trash cans are placed an equal distance apart.
mylen [45]

Answer:

The cans are spaced 0.75 miles from each other.

Step-by-step explanation

Since the trash cans are placed at an equal distance we need to divide the total distance they cover by the number of cans that are spread across that distance in order to know how far apart they are. This is shown below:

distance between cans = (total distance)/(number of cans)

distance between cans = 13.5/18

distance between cans = 0.75 miles

The cans are spaced 0.75 miles from each other.

4 0
3 years ago
1. Graph: y = 3x<br> please help
Zielflug [23.3K]

Answer:

[see below]

Step-by-step explanation:

Find two points that would satisfy the equation.

When x = 1:

y=3(1)\\\\y=3

One point would be (1, 3).

When x = 2:

y=3(2)\\\\y=6

Another point would be (2, 6).

Graph the points (1,3) and (2,6) and draw a line crossing through them.  

Hope this helps.

8 0
4 years ago
Which is the approximate circumference of a circle with a diameter of 60 cm?
Dima020 [189]
The circumference is the diameter times pi.

d=60 \ [cm] \\ \\&#10;C=60\pi \approx 60 \times 3.14=188.4 \approx 188 \ [cm]

The answer is D.
8 0
3 years ago
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