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BlackZzzverrR [31]
1 year ago
6

Need answer if you could show work would be nice

Mathematics
1 answer:
Oliga [24]1 year ago
4 0
(x^3 - 3x^2 - 5x + 39) = (x^2 - 6x + 13)(x + 3). [you can verify this by expanding the brackets]
x + 3 = 0 when x = -3

x^2 - 6x + 13 = 0
x^2 - 6x + 9 + 4 = 0
(x - 3)^2 = -4
This shows x^2 - 6x + 13 = 0 has no real roots
The function only has one real root at x = -3
You might be interested in
I need help finding x
Nastasia [14]
All sides of a triangle add up to 180 degrees. Since we know one angle is 93 degrees, we know that the top part is going to equal 180 degrees. We know that two of those measurements are 93 and 45, so we add those together to get 138. We subtract this from 180 to find the missing angle, which is 42 degrees. So, the left side of the triangle is equivalent to 45 degrees and the right side (x) is 42 degrees. 93 + 45 + 42 = 180. If it was asking for the measurements of the supplementary angles to the bottom angles of the triangle, then those would be (for 45) 135 and (for 42) 138, that way both angles and their supplements add up to 180 each. I hope this helps and that it’s right
8 0
4 years ago
John rides his bike with a constant speed of 20 km/h. How far can he travel in 2 1/2 hours?
Olegator [25]

Ok so,

20*2= 40

20*1/2=10

40+10=50

So Johncan travel 50 km in 2 1/2 hours.

Hope this helps :)

4 0
3 years ago
2[3 (10 – 4)2] <br><br><br> 10 - 4 = 6 ^2 = 36 <br> 3 36 = 39 <br> 39 times 2 = 78
DochEvi [55]
2[3 + (10 - 4)^2] = 2[3 + 6^2] = 2[3 + 36] = 2[39] = 78
7 0
3 years ago
What is f(4) thanks
Arada [10]
F(4) is function notation that means the value of y when x = 4.

Replace x with 4 in the expression and evaluate the right side.

f(x) = 3x - 15

f(4) = 3(4) - 15

f(4) = 12 - 15

f(4) = -3
4 0
3 years ago
Read 2 more answers
Convert: 15 days into seconds​
tankabanditka [31]

Answer:

1296000 seconds

Step-by-step explanation:

Hope this helps

8 0
3 years ago
Read 2 more answers
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