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3 years ago

What are the factors of x² + 3x - 4?

Mathematics

2 answers:

Andrej [43]3 years ago

6 0

Answer: (X+4) and (X-1) hope this helps!

solong [7]3 years ago

6 0

Answer:

(x + 4) and (x - 1)

Step-by-step explanation:

x² + 3x - 4

You want to look for what numbers can be multiplied in order to get the 3rd number (the -4) that can also add/subtract to the middle number (the 3)

simply,

(4)(-1) = -4

(4) -1 = 3

to make sure you can also reverse it and if you get to the same thing that you started with it is correct.

(check photo)

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12.4. Measure of Dispersion 2076 Q.No. 15 Find the standard deviation of: 4, 6, 8, 10, 12.

Alenkinab [10]

Answer:

Standard deviation of given data = 3.16227

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 5

Given data 4, 6,8,10,12

$Mean = \frac{4+6+8+10+12}{5} = 8$

Mean of the sample x⁻ = 8

Standard deviation of the sample

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

Step(ii):-

Given data

x : 4 6 8 10 12

x-x⁻ : 4 - 8 6-8 8-8 10-8 12-8

(x-x⁻) : -4 -2 0 2 4

(x-x⁻)² : 16 4 0 4 16

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

$S.D = \sqrt{\frac{16+4+0+4+16}{4}}$

S.D = √10 = 3.16227

Final answer:-

The standard deviation = 3.16227

8 0

3 years ago

Express 73/5as a decimal.

Assoli18 [71]

Answer:

as a fraction it could be 3/5

Step-by-step explanation:

but as a decimal it would be 0.6

7 0

3 years ago

The point (0, –4) is located . A coordinate plane.

Citrus2011 [14]

Answer:

On the x- axis

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Due in 15 helpppp!!!!!!!!!

notka56 [123]

36m+25. ehhwienebtbtbrbve

4 0

3 years ago

Can you read each graph for its unit rate and type the correct code? Please remember to type in ALL CAPS with no spaces

Ray Of Light [21]

Answer:

1.5, 20, 40, 7.5

Step-by-step explanation:

The first one is 1.5, the second one is 20, the third is 40, and the fourth is 7.5

5 0

3 years ago