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4 years ago

15

What's the slope of the line Y+1=3(X+4)

1 answer:

BaLLatris [955]4 years ago

3 0

First you distribute the 3 into the parentheses and you get 3x + 12, then you subtract the 1 from both sides and you get y=3x + 11.

The slope formula is y=mx+b, and m equals the slope.

The answer is 3, or 3/1.

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Under ideal conditions, an E. coli bacteria cell doubles every 20 minutes. The following graph represents an E. coli population,

umka21 [38]

Answer: B

<u>Step-by-step explanation:</u>

the average rate of change is the same as slope (m). Calculate the slope between the beginning and ending coordinates for each stage.

A = (0, 1) → (4, 2.5)

B = (4, 2.5) → (6, 4)

C = (6, 4) → (8, 6)

D = (8, 6) → (10, 9)

E = (10, 9) → (12, 14)

$\frac{y _{2} - y_{1}} {x _{2} - x_{1}}$

<u>Stage A</u>

$\frac{2.5 - 1}{4 - 0}$

= $\frac{1.5}{4}$

= 0.375

<u>Stage B</u>

$\frac{4 - 2.5}{6 - 4}$

= $\frac{1.5}{2}$

= 0.75

<u>Stage C</u>

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= $\frac{2}{2}$

= 1.00

<u>Stage D</u>

$\frac{9 - 6}{10 - 8}$

= $\frac{3}{2}$

= 1.5

<u>Stage E</u>

$\frac{14 - 9}{12 - 10}$

= $\frac{5}{2}$

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(A) Stage B = Stage C False

(B) Stage A is the slowest TRUE

(C) Stage D > Stage E False

(D) Stage D is the fastest False

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3 years ago

What is the circumference of a circle with a radius of 14in

Colt1911 [192]

Answer: diameter = 2R = 28

Circumference = 2pieR

= 28pie

= 87.964594300514

Step-by-step explanation:

I used a calculator for this..

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4 years ago

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