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3 years ago

Which expression has a value of -2?

Mathematics

2 answers:

Hitman42 [59]3 years ago

7 0

Answer:

B and C.

Step-by-step explanation:

3*4=12,12/6 is 2. Incorrect

-3*-4=12,12/-6 is -2, Correct

-3*4=-12,-12/6 is -2. Correct

3*-4=-12,-12/-6=2. Incorrect.

juin [17]3 years ago

3 0

C is, because -3(4) is -12, divides by 6 is -2

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ANSWER PLZ QUICK AND FAST WHAT THE ANSWER

In-s [12.5K]

Hi there!

Let's solve this inequality step by step!
$- 6r + 2r > 3 - 3r$

First collect the terms on the left.
$- 4r > 3 - 3r$

In order to solve, we must isolate r. Therefore we need to bring them all to the left. Our next step will therefore be to add 3r to both sides of the equation.
$- r > 3$

Finally we need to divide both sides of the equation by -1. Because we divide by a negative, the sign flips.
$r < - 3$

Hence, the answer is r < -3.
~ Hope this helps you!

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3 years ago

Team A is located on the south bank of a river. Teams B and C are located on the north bank. The angle formed from Team C to Tea

creativ13 [48]

The correct answer is 58.5

6 0

4 years ago

Graph the line that is parallel to y = 3x - 7 that passes through the point (2, 1)

Misha Larkins [42]

Answer:

y = 3x - 5

y = 3x - 7

y = 3x + b

1 = 3(2) + b

1 = 6 + b

-5 = b

y = 3x - 5

7 0

4 years ago

Newton uses a credit card with a 18.6% APR, compounded monthly, to pay for a cruise totaling $1,920.96. He can pay $720 per mont

Tresset [83]

<span>To find out how much Newton would pay you take the cruise cost of $1920.96 and divide by $720 to find out it would take 3 months for Newton to pay off the balance at $720 per month. The cost of the cruise would be $1920.96 + ($1920.96-$720)*0.186+ ($1920-$1440)*0.186)</span>

7 0

4 years ago

Iodine-125 has a half-life of about 60 days.

Murljashka [212]

62.5 mg sample will remain after 240 days

Step-by-step explanation:

Given

Half-life = T = 60 days

The formula for calculating the quantity after n half lives is given by:

$N = N_0(\frac{1}{2})^n$

Here

N is the final amount

N_0 is the initial amount

n is the number of half lives passed

The number of half lives are calculated by dividing the time for which the remaining quantity has to be found by half life

The quantity has to be calculated for 240 days so,

$n = \frac{240}{60}\\n = 4$

Given

$N_0 = 1000\ mg$

Putting the values in the formula

$N = 1000 (\frac{1}{2})^4\\=1000 * \frac{1}{16}\\=\frac{1000}{16}\\=62.5\ mg$

Hence,

62.5 mg sample will remain after 240 days

Keywords: Half-life, sample

Learn more about half-life at:

#LearnwithBrainly

3 0

3 years ago