Kevan is 6 years younger than his sister Katie. Melanie is twice as old as kevan. How old are all three siblings? A. If you let K represent Katie's current age, what expression can you use to represent kevan's current age?
B. Based on your answer to part a, what expression represents Melanie's age?
C. If Melanie is 18 years old , what equation can you write to solve the problem?
D. Solve the equation. How old are kevan and Katie?

Answers

Answer 1

Answer: A:
k=katie's age
ke=kevan's age=k-6 (Kevan is 6 years younger than his sister Katie)

B:m=Melanie's age=2*ke=2k-12 (Melanie is twice as old as kevan)

C and D: M=18

so this means that

18=2*ke
if we divide both by 2, we get:
9=ke
Kevan is 9 years old

and 18=2k-12

add12 to both sides:
30=2k
15=k
Katie is 15 years old

Answer 2

Answer:

Answer:

A- k-6

B- 2(k-6)

C- 18 = 2 (k-6)

D- katie- 15, kevan 9

Step-by-step explanation:

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What are the first three common multiples of 5 and 15

Answers

The first 3 common multiples of 5 and 15 are 15, 30, and 45. Remember that the number itself is also a multiple of any number, since you can multiply it by 1.

5 - 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
15 - 15, 30, 45, 60, 75, 90, 105

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Enter the answer to the problem below, using the correct number or significan figures 100*3.25

Answers

100 * 3.25 = 325

In multiplying numbers with decimal points, you have to do the following.

1) remove the decimals and consider the number as a whole number
   from 3.25 to 325.
2) Consider the 100 in the equation. We know that whatever number is multiplied by 0 is always 0. So, we only consider 1.

   3 2 5
   1 0 0
------------------
3 2 5 0 0

In big numbers we always start multiplying the number from the right side, which is 5. Since, the multiplicand is 1. Whatever number multiplied by 1 is always equal to that number.

325 * 1 = 325; add the two 0s attached to 1. = From 325 to 32500.

Now, 32500 is the product when we multiply 325 by 100. But, remember 325 is not really a whole number, it has decimals.

3.25 == count the number of places after the decimal. in this case, there are two places.

In the product 32500 == count the number of places from the last digit to know the placement of the decimals. There must be 2 places after the decimal.

FROM 32500 TO 325.00 = Since we can disregard the 00 after the decimal numbers.

100 * 3.25 = 325

Answer: 300

Step-by-step explanation:

John says that the number Y is equal to five more than 15 times X which of the following equation could be used to find the value of Y

Answers

Answer:

Step-by-step explanation:

Y=5+15X

How do I factor out the coefficient of the variable -5p+20

Answers

-5(p-4)

think of dividing each term by whatever you're factoring out, so the -5/-5 becomes a 1, and the +20/-5 becomes -4

How many 9000 millileters are liters

Answers

9000 milliliters is 9 liters.

1 liter = 1000 milliliters.

Which one is it.
You can choose more than one.

Answers

It is divisible by 8 and 3

Answer:

3 and 8

Step-by-step explanation:

6,240/3=2080

6,240/9=693.3333333.....

6,240/780

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