3 years ago

Ill give brainliest to whoever helps

Mathematics

1 answer:

Natalija [7]3 years ago

7 0

Answer:4

Step-by-step explanation: First u - 2x from both sides to get x by it self.

leaving u with x+8

Next u divide both sides by 2 giving u the answer 4

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The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half of its initial m

Dovator [93]

1st half life: 195/2 = 97.5 g
2nd half life: 97.5/2 = 48.75 g
3rd half life: 48.7/2 = 24.375 g
4th half life: 24.375/2 = 12.1875 g
5th half life: 12.1875/2 = 6.09375 g

or you can do
195(2)^(-5) = 6.09375
** rounded to nearest gram = 6 g

4 0

4 years ago

Solve the question: 3(.5y-6)=12

makvit [3.9K]

Answer:

y = 20.

Step-by-step explanation:

Distribute:

$3(0.5y)-3(6)=12$

$1.5y-18=12$

Add 18 to both sides:

$1.5y-18+18=12+18$

$1.5y=30$

Solve for y:

$\frac{1.5y}{1.5}=\frac{30}{1.5}$

$y=20$

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3 years ago

What is the slope of the line that passes through (-4, 5) and (1, 3)?

Tasya [4]

M=-2/5 is the answer to this equation

7 0

3 years ago

Kristin and her family left their campsite to take a bike ride. They biked 5 miles west and then 12 miles north. How far are the

pickupchik [31]

Answer:

they are 17 miles away from their campsite.

Step-by-step explanation:

we get the answer by adding the miles traveled north to the miles traveled west, and we get the total number of miles they traveled away from their campsite.

5 + 12 = 17

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3 years ago

Which of the following is the solution to the inequality -5x + 20 < 130?

Masja [62]

The answer is B. x > -22

-5x + 20 < 130

-5x < 130 - 20

-5x < 110

-5x/-5 > 110/-5

x > -22

6 0

3 years ago