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3 years ago

The opposite of -a is always positive. True or false? Answer it fast please!!

Mathematics

1 answer:

nikklg [1K]3 years ago

3 0

Answer:

false

Step-by-step explanation:

If "a" is a negative number, then this statement would be false.

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Find the inverse of f(x) = 2x - 5. The 4 options are in the pic below. PLEASE HELP.

leva [86]

Answer:

The answer is B

Step-by-step explanation:

I hope this helped :)

3 0

3 years ago

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Can someone please please help me :/ I have to get this right. please help

Vladimir [108]

<h3>Answer: Choice B. f(x) = 100 - 68x</h3>

Work Shown:

Solve for y. Then replace y with f(x).

$680x + 10y - 1000 = 0\\\\10y - 1000 = -680x\\\\10y = -680x + 1000\\\\y = \frac{-680x + 1000}{10}\\\\y = \frac{-680x}{10} + \frac{1000}{10}\\\\y = -68x + 100\\\\y = 100 - 68x\\\\f(x) = 100 - 68x\\\\$

Effectively this involves adding 1000 to both sides and subtracting 680x from both sides, afterward we divide both sides by 10 to isolate y.

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3 years ago

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I WILL AWARD BRAINLIST PLS SOLVE

Ivanshal [37]

Answer:

Ah yes rsm.

Anyways, AB is parallel to DE so 72= angle BDE. So BDE+2x+2x=180

72+4x=180

108=4x

x=27

3 0

3 years ago

Tina has been dieting for a total of 13 weeks she lost 3 pounds on the first week of her dad but gain back a pound on the second

natima [27]

So Tina has been dieting for 13 weeks

On week 1: She lost 3 pounds, so +3 pounds

On week 2: She gained a pound, so - 1 pound

On each remaining week, she lost 2 pounds, so,

On week 3: She lost 2 pounds, so +2 pounds

On week 4: She lost 2 pounds, so +2 pounds

On week 5: She lost 2 pounds, so +2 pounds

On week 6: She lost 2 pounds, so +2 pounds

And so on,,,

So losing 2 pounds each week for 11 weeks would equal, 2 pounds x 11 weeks = 22 pounds

So, add that all up: 3 pounds - 1 pound + (2 x 11 weeks) = 24 pounds total

4 0

3 years ago

PLEASE HELP!!! Which choice is a solution to the system of equations below?

frozen [14]

Answer:

Step-by-step explanation:

4y = 12x + 16

3x = y - 4

y = 3x + 4

using that in the first equation

4(3x+4) = 12x + 16

12x + 16 = 12x + 16

=> both lines/equations are identical, so they have infinitely many solutions.

7 0

3 years ago