Please help Factor completely. Show your work (as much work as possible, including a list of factors if
2 answers:
Answer:
1. x =0; x = -7
2. x = -3; x = 10
3. x = -5; x = -4
Step-by-step explanation:
(1). 6x² + 42x = 0
6x (x + 7) = 0
6x = 0. OR. x + 7 = 0
x = 0/6. x = 0 - 7
x = 0. x = -7
x = 0
x = -7
(2). x² - 7x - 30 = 0
The factors here are (3, -10)
x² - 10x + 3x - 30 = 0
x ( x - 10) + 3 ( x - 10) = 0
(x + 3) ( x - 10) = 0
x + 3 = 0 OR. x - 10 = 0
x = 0-3. x = 0 + 10
x = -3. x = 10
x = -3
x = 10
(3). x² + 9x + 20 = 0
The factors are ( 4, 5)
x² + 4x + 5x + 20 = 0
x ( x + 4) + 5 ( x + 4) = 0
(x + 5) (x + 4) = 0
x + 5 = 0 . OR. x + 4 = 0
x = 0-5. x = 0 - 4
x = -5. x = -4
x = -5
x = -4
Answer:
Step-by-step explanation:
1) 6x² + 42x
6x is common to both terms. Therefore, it becomes
6x(x + 7)
2) x² - 7x - 30
We would find two numbers such that their sum or difference is -7x and their product is - 30x².
The two numbers are 3x and -10x. It becomes
x² + 3x - 10x - 30
x(x + 3) - 10(x + 3)
(x + 3)(x - 10)
3) x² + 9x + 20
We would find two numbers such that their sum or difference is 9x and their product is 20x².
The two numbers are 4x and 5x. It becomes
x² + 4x + 5x + 20
x(x + 4) + 5(x + 4)
(x + 4)(x + 5)
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The answer is -3.8 this is the answer
<span>There are 4 vans. So we have that probability that the first vehicle is a van p (e) = 4/10 = 0.4.
P(e|f) = P( f and e) / p (f)
p(e) = 0.4 and p(f) = 3/9
P (f and e) = 0.40 * 0.33 = 0.132
So p(e|f) = 0.4 * 0.33/ 0.33 = 0.4
P(f and e) p(f) * p(e) = 0.4 * 0.33 = 0.132</span>
Answer:
104 ft
Step-by-step explanation:
The ratio of object to shadow is 5:8 and the tree is 65 so 65/5 is 13 and 13*8=104 so that's your answer! Sorry if it doesn't make to much sense.
Answer:
2? bc if x=7 then it equals 2(7) which is 14 sooo i believe either 7 or 2
