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Akimi4 [234]
3 years ago
8

Solve by factorisation 2x2 + 3x - 20 = 0

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
7 0
(2x - 5) (x + 4).................
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What is the answer?
sertanlavr [38]

Answer:

A. P(3/4)

Step-by-step explanation:

7 0
3 years ago
find the length of the side of square with an area of 121 in2. A.484 in, B.30.25 in, C.11 in, D.6.5 in
marishachu [46]
For a square, the area is the square of the side length (length x width = area, but in a square length = width). That means the side length is the square root of the area.

In this case the side length is the square root of 121, which is 11. Answer is C.
3 0
3 years ago
Read 2 more answers
Which of the following options correctly represents the complete factored form of the polynomial F(x)=x^4-3x^2-4?
Bumek [7]

Answer:

D

Step-by-step explanation:

Let's substitute a for x²:

x^4 - 3x² - 4

a² - 3a - 4

Now, this looks like something that is much more factorisable:

a² - 3a - 4 = (a - 4)(a + 1)

Plug x² back in for a:

(a - 4)(a + 1)

(x² - 4)(x² + 1)

The first one is a difference of squares, which can be factored into:

x² - 4 = (x + 2)(x - 2)

The second one can also be treated as a difference of squares:

x² + 1 = x² - (-1) = (x + √-1)(x - √-1) = (x + i)(x - i)

The answer is (x + 2)(x - 2)(x + i)(x - i), or D.

6 0
3 years ago
Read 2 more answers
NEED HELP ASAP !! PLEASE !!!
algol [13]

Answer:

The domain for A is 0, 1, 2, 3 and the range is 0, 5, 10, 15

and the domain for B is 2, 2, 4, 4 and the range is 4, 3, 2, 1

Only A is a function because for the same input value in B, there is two different output values which is not possible.

Step-by-step explanation:

I just wanna let you know so you don't waste any more points for us, but the domain is the x-values/ input/ stuff on the left of a given point. The range is the y-values, the output, and the stuff on the right side of a given point. So on (1, 7) for example, the 1 would be the domain number and the 7 would be the range number.

The y-axis values are the output/range and the x-axis values are the input/domain.

Hope this helps bro

6 0
3 years ago
*10 ml : 21* <br>pls help me with this ratios question in (simplest form) pls​
larisa86 [58]

Answer:

0,476190476 ml

Step-by-step explanation:

3 0
3 years ago
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