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Amiraneli [1.4K]
3 years ago
15

Factor the expression completely.

Mathematics
1 answer:
netineya [11]3 years ago
3 0

Answer:

C. 2(2x + 3)(2x - 3)

Step-by-step explanation:

8 {x}^{2}  - 18 \\  = 2 \times 4 {x}^{2}  - 2 \times 9 \\  = 2(4 {x}^{2}  - 9) \\  = 2 \{( {2x})^{2}  - ( {3)}^{2}  \} \\  = 2(2x + 3)(2x - 3) \\

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3. If a ladder is x feet long, how high up a wall can it safely reach?
sineoko [7]

Answer:

xsin∅

Step-by-step explanation:

If the ladder is <em>x foot long</em>, and it can safely make a <em>maximum angle ∅</em>  with the floor, then, the maximum height it can reach will be xsin∅

6 0
3 years ago
Please help and thannks
blsea [12.9K]

Answer:

745

Step-by-step explanation:

3 0
3 years ago
A triangle has an area of 90 and a height of 10. What is the base
Dima020 [189]
The base would be equal to 18

5 0
3 years ago
Paula’s Printing charges $21.50 for each T-shirt. Shantay’s Shirts has a one-time set-up fee of $63 and then charges $18 for eac
ki77a [65]

Answer:

No.

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
Find the slope and y-intercept of the line that is parallel to y = -x - 3 and passes through the point (3, -2)
motikmotik
Use point slope formula y-y1=m(x-x1)
You are told that y=-x+3. This equation is of the form y=mx+b. Where m=-1. m is the slope. And you have a point (x1,y1) that is (3,-2). With all of this in mind, you then plug all of these details into the point slope formula y-y1=m(x-x1)

In point slope form, you have the following:


y-(-2)=-1(x-3).

To turn this into slope intercept form, simplify y-(-2) to get y+2 and distribute in the -1 to get:

y+2=-x+3

Subtract 2 from both sides to get

y=-x+1

In slope intercept form, the answer is
y=-x+1 and in point slope form, the answer is y+2=-x+3

Hope this helps!!!

3 0
3 years ago
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