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algol [13]
3 years ago
14

How to factor 8x - 4

Mathematics
2 answers:
noname [10]3 years ago
8 0

Step-by-step explanation:

first you take out 4 leavinf you with 2x-1 and thennyou are done

Greeley [361]3 years ago
3 0

8x - 4 is an expression. This means that x can mean anything.

If you mean 8*-4, the answer would be -32 because 8 multiplied by 4 is 32, but since a positive multiplied by a negative equals a negative, the product would become a negative.

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So I'm stuck on a math problem. Given z=3 + 5i and w= -5 +I, evaluate z-w
skad [1K]

Answer:

8 + 4i  

Step-by-step explanation:

Put corresponding terms above each other and subtract in the usual way.

    z =   3 + 5i

<u>     w = -5 +   i </u>

z - w =  8 + 4i: 3 - (-5} = 8; 5i - 1i = 4 i

7 0
2 years ago
Write the equation of a line of a line passing through the points (3,1) and (6,3).​
maxonik [38]

Answer:

i think its 2 1

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Write the equation of a line through points (5, 5) and (1, 0) in point-slope form
klasskru [66]

Answer:

y=(5/4)x-5/4

Step-by-step explanation:

First we need to find the slope:

\frac{y_{2}-y_{1} }{x_{2}-x_{1} }

=\frac{5-0}{5-1}

=5/4

The SLops is 5/4

point-slope forum is

y=(5/4)x-5/4

(i think)

3 0
3 years ago
Need help with equations with variables on both sides, giving 100 points, tysm if you help :) 6 (2x-4) = 8(x +2) A. 3 B. 10 C. 2
scoundrel [369]

Answer:

B. 10

C. All real numbers.

Step-by-step explanation:

6 (2x-4) = 8(x + 2)

Distribute the numbers outside of the factors:

12x - 24 = 8x + 16

Subtract both sides by '8x'

12x - 8x - 24 = 8x - 8x + 16

4x - 24 = 16

Add '24' to both sides:

4x = 40

Divide both sides by 4:

x = 10. Therefore, <u>B. 10</u> is the correct answer.

3(4p - 2) = -6(1 - 2p)

Distribute the numbers similarly to the example before:

12p - 6 = -6 + 12p

Subtract '12p' from both sides:

12p - 12p -6 = -6 + 12p - 12p

0 -6 = -6

Add '6' to both sides:

0 - 6 + 6 = -6 + 6

0 = 0

Therefore, the solution consists of <u>all real numbers.</u>

3 0
2 years ago
Suppose N has a geometric distribution with parameter p. Derive a closed-form expression for E(N | N &lt;= k), k = 1,2,... Check
vfiekz [6]

Answer:

P(X= k) = (1-p)^k-1.p

Step-by-step explanation:

Given that the number of trials is

N < = k, the geometric distribution gives the probability that there are k-1 trials that result in failure(F) before the success(S) at the kth trials.

Given p = success,

1 - p = failure

Hence the distribution is described as: Pr ( FFFF.....FS)

Pr(X= k) = (1-p)(1-p)(1-p)....(1-p)p

Pr((X=k) = (1 - p)^ (k-1) .p

Since N<=k

Pr (X =k) = p(1-p)^k-1, k= 1,2,...k

0, elsewhere

If the probability is defined for Y, the number of failure before a success

Pr (Y= k) = p(1-p)^y......k= 0,1,2,3

0, elsewhere.

Given p= 0.2, k= 3,

P(X= 3) =( 0.2) × (1 - 0.2)²

P(X=3) = 0.128

3 0
2 years ago
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