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mariarad [96]
3 years ago
5

Evaluate 15/k when k =3

Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
3 0

Answer:

5

Step-by-step explanation:

If k is three than 15÷3 is 5

Over [174]3 years ago
3 0

Hello!

When a variable equals a number, you substitute in that number wherever the variable is. So, in this case, since k = 3, substitute in 3 wherever k appears in the equation.

15 / k

15 / 3

Now, divide 15 by 3. To do this, ask yourself how many times 3 goes into 15. It would be 5, as 3 + 3 + 3 + 3 + 3 = 15. (So essentially 5 3's go into 15, so it equals 5)

15 / 3 = 5

Therefore, your answer is 5.

Hope this helps!

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Multi step equation 7x+8=36​
Vitek1552 [10]

Hey

Answer: 4

How do you find that out?

Divide the two numbers on the right, 36 and 8.

36/8=4

7 * 4 + 8 = 36

Hope this helped

4 0
3 years ago
Read 2 more answers
i need help with number 7. its solving systems of equations by substitution. please show work!!! i need help
SIZIF [17.4K]
#7:
<span>Subtract </span>y<span> from both sides:
</span>-4x=6-y

Divide both sides by -4:

Answer:
x= -6-y/4


#7 part 2:

Add <span>y</span><span> to both sides:
</span>-5x=21+y

Divide both sides by -5:

Answer: x=-21+y/5

hope i helped!



7 0
3 years ago
Evaluate the expression 4−(1−4)−2 =
Cloud [144]

Parentheses first. 1-4= -3. 4-3=1. 1-2=-1.

The answer is -1.

3 0
3 years ago
Read 2 more answers
Erica is a sheep farmer. She is having a problem with wolves attacking the flock. She starts with an initial 200 sheep and notic
Free_Kalibri [48]

The equation for the situation is y=200(\frac{2}{3})^{x}

It will take around 9 years for her to have around 5 sheep

Step-by-step explanation:

The exponential decay growth/decay equation is y=a(b)^{x} , where

  • a is the initial value
  • b is the growth/decay factor
  • If b > 1, then it is a growth factor
  • If 0 < b < 1, then it is a decay factor

Erica is a sheep farmer. She is having a problem with wolves attacking the flock. She starts with an initial 200 sheep and notices that the population is two-thirds of the previous year

∵ The population is decreased

∴ The equation is decay

∵ The population is two-thirds of the previous year

∴ The decay factor is \frac{2}{3}

∵ She starts with an initial 200 sheep

∴ the initial value is 200

∵ The decay equation is y=a(b)^{x} , where y represent the

   population in x years

∵ a = 200

∵ b = \frac{2}{3}

∴ y=200(\frac{2}{3})^{x}

The equation for the situation is y=200(\frac{2}{3})^{x}

∵ The population after x years is around 5 sheep

- Substitute y by 5 to find x

∵ 5=200(\frac{2}{3})^{x}

- Divide both sides by 200

∴ 0.025=(\frac{2}{3})^{x}

- Insert ㏒ for both sides

∴ log(0.025)=log(\frac{2}{3})^{x}

∴ log(0.025)=xlog(\frac{2}{3})

- Divide both sides by log(\frac{2}{3})

∴ 9.098 = x

∴ x is around 9 years

It will take around 9 years for her to have around 5 sheep

Learn more:

You can learn more about the equation  in brainly.com/question/10666510

#LearnwithBrainly

8 0
3 years ago
One half of a nmber is 8 less than the number itself translated
MA_775_DIABLO [31]
\frac{x}{2}+8^{(2}=x^{(2} \\ \\ x+16=2x \\ \\ x-2x=-16 \\ \\ -x=-16 \\ \\ \boxed{x=16}
8 0
3 years ago
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