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Sloan [31]
3 years ago
10

Anyone know how to factor this: x^3 -3x^2 -10x=0

Mathematics
1 answer:
Kazeer [188]3 years ago
6 0
Answer : x = 0,5,-2
Step 1 : factor left side
x(x+2)(x-5)=0
step 2 : set factors equal to 0
x=0, x+2=0 or, x-5=0
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What are the zeros of f(x) = x2 + x - 20?
jeyben [28]

Answer:

x = - 5, x = 4

Step-by-step explanation:

Given

f(x) = x² + x - 20

To find the zeros equate f(x) to zero, that is

x² + x - 20 = 0

Consider the factors of the constant term ( - 20) which sum to give the coefficient of the x- term ( + 1)

The factors are + 5 and - 4, since

5 × - 4 = - 20 and + 5 - 4 = + 1, hence

(x + 5)x - 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 5 = 0 ⇒ x = - 5

x - 4 = 0 ⇒ x = 4

8 0
3 years ago
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Step-by-step explanation: because each money increment is 15$ so the answer is $15

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3 years ago
What is the probability that you and your friend are both chosen?
WINSTONCH [101]

Answer:  \frac{2}{35}

Step-by-step explanation:

Given: The total number of ways of to choose 3 contestants out of 7 (including me and my friend)=35..................> Total outcomes.

Favorable outcomes = 2

Then the probability that me and my friend are both chosen =\frac{\text{favorable outcomes }}{\text{Total outcomes}}

Thus , the probability that me and my friend are both chosen =\frac{2}{35}

5 0
3 years ago
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Use distribute property and simplify<br> Help me please​
stellarik [79]

Answer:

104

155

180

Step-by-step explanation:

an easy way is to solve what is in the parenthesis then multiply by the outside number

but if you need to use the distributive property:

1. 4 x (20 - -6)

(4 x 20) - (4 x -6) = 80 - -24 = 80 + 24 = 104

2. -5 x (24 - -7)

(-5 x 24) - (-5 x -7) = -120 - 35 = 155

3. 12 x (-30 + 45)

(12 x -30) + (12 x 45) = -360 + 540 = 180

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3 years ago
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Solve for K <br><br> 8(10-K) = 2k<br><br><br> K=?
maks197457 [2]

8(10-K) = 2k

mutiply the bracket by 8

(8)(10)= 80

(8)(-k)= -8k

80-8k= 2k

move -8k to the other side

sign changes from -8k to +8k

80-8k+8k= 2k+8k

80= 2k+8k

80= 10k

divide by 10 for both sides

80/10= 10k/10

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Answer: k= 8

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