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guajiro [1.7K]
4 years ago
12

Expand 2(x+3) plss coukd u expand it​

Mathematics
1 answer:
sasho [114]4 years ago
5 0

Answer:

2x + 6

Step-by-step explanation:

Each term in the parenthesis is multiplied by the 2 outside, that is

2(x + 3)

= (2 × x) + (2 × 3)

= 2x + 6

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What is an equation for the line parallel to y = -3x – 5 that contains (-1, 8)?
jeka57 [31]
<h3>Answer: y = -3x+5</h3>

slope = -3

y intercept = 5

==================================================

Explanation:

The given line is in the form y = mx+b, so the slope is m = -3

Any parallel line to this one will also have the same slope, but a different y intercept.

Plug (x,y) = (-1,8) and m = -3 into y = mx+b so we can find new y intercept.

---------------------

y = mx+b

8 = -3(-1) + b

8 = 3+b

8-3 = b

5 = b

b = 5

So because m = -3 and b = 5, this means we have y = -3x+5 as our answer.

5 0
3 years ago
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The polynomial is a difference of perfect squares. Use the formula a2 – b2 = (a + b)(a – b) to factor completely.
mash [69]

Answer:

81x^{2} -49\\(9x)^2-7^2\\(9x-7)(9x+7)

6 0
3 years ago
Which of the following is the image of the point for the given rotation, r (120°) (F)?
bogdanovich [222]

Answer:

B

Step-by-step explanation:

360/6

6 is number of sides

You get 60

Rotate twice to reach 120

Moving F Counter clockwise twice is where B was

5 0
3 years ago
Jack likes to go fishing. While waiting for the fishes to bite, he formulates the following model for the process: fishes bite a
gogolik [260]

Answer:

a) 0.122

b) 3.35 × 10⁻⁴

c) 0.1071

Step-by-step explanation:

Here we have the Poisson process given by

P(N(t) = k) = \frac{e^{-\lambda t} (\lambda t)^k }{k!}

Where:

λ = Rate = 4 bites/hour and

t = Length of time that is

Mean = λt

Where k = 6 fishes bites and t = 2 hours we have

P(N(2) = 6) = \frac{e^{-4 \times 2} (4 \times 2)^6 }{6!} = 0.122

b) The probability that he fails to catch any fishes during the first two hours is the probability t that he catches 0 fish as follows

P(N(2) = 0) = \frac{e^{-4 \times 2} (4 \times 2)^0 }{0!} = 3.35 \times 10^{-4}

(c) Here we have

P(N(2) = 6) =  0.122

For 1 fish caught in two times we have first time no fish and second time he caches a fish gives

0.122×(1-0.122) = 0.1071

4 0
3 years ago
I need help PLEASE :(
Firlakuza [10]
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