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Minchanka [31]
2 years ago
6

Factorise x2 - 8x + 15

Mathematics
2 answers:
brilliants [131]2 years ago
8 0

Answer:

(x-5) (x-3)

Step-by-step explanation:

At first find two numbers, that if you multiply, you get +15x², and the same number, if you do addition, get -8x

Those numbers are: -5x and -3x.

Now replace the -8x with the -5x and -3x. (x² - 5x - 3x + 15)

Now factorise as normal. You should get (x-5) and (x-3)

Hope I helped!

lisabon 2012 [21]2 years ago
4 0

Answer:

{x}^{2}  - 8x + 15 \\ (x - 5)(x - 3)

I hope I helped you^_^

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3 years ago
Brainliest, what is the total measure of angles 8 and 5 of angle 7 equals 61
guapka [62]
Lines equal 180°. The line with angles 5 and 7 equals 180°. If angle 7 equals 61°, then angle 5 equals 119° (180° - 61°= 119°).

Angles 5 and 8 are opposite vertical angles, which are always congruent (equal), so angles 5 and 8 both equal 119°.

119° (angle 5) + 119° (angle 8)= 238°


ANSWER: The two angles total 238° (bottom choice).

Hope this helps! :)
7 0
3 years ago
Sanjay borrowed 7,000 at a simple interest rate of 3% per year. After a certain number of years he had paid $840 in interest alt
alexgriva [62]

Answer:

It was 4 years.

Step-by-step explanation:

To solve this problem we need to use the appropriate formula for simple interest, which is shown below:

M = C*r*t

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840 =7000*0.03*t

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t = 840/210

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7 0
3 years ago
Factor -8m^3n^3+2m^5+2m^3
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−

2

m

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 out of  

−

8

m

3

n

3

+

2

m

5

+

2

m

3

.

−

2

m

3

(

4

n

3

−

m

2

−

1

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7 0
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Calculate exactly how many miles not light year is the star Sirius is from the sun
algol13

Answer:

5.06208e+13 Hope it helps :)

Step-by-step explanation:

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