2 years ago

Which two equations are parallel?

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

5 0

Answer: The third option is correct.

Step-by-step explanation:

In order for two equations to be parallel, the equations' slopes must be the same.

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⦁ Kim's age is twice that of her sister. When you add Kim's age to her sister's age, you get 24. How old is each sister?

Vitek1552 [10]

Answer:

Kim is 16 years old and her sister is 8 years old.

Step-by-step explanation:

We can use equations to represent this scenario.

Let Kim's age be 'k' and her sister's age be 's'.

Thus, k=2s (since Kim's age is double of her sister)

and k+s=24 (their ages add to 24 (from question)

Substituting the first equation:

2s+s=24

3s=24

s=8

Therefore, Kim's sister is 8 years old.

Now substitute this value into the second equation:

k+8=24

k=16

Therefore, Kim is 16 years old.

6 0

3 years ago

Expand. (n^2 -3n +1)(2n + 3) =

sukhopar [10]

Answer:

$2n^3-3n^2-7n+3$

Step-by-step explanation:

$(n^2 -3n +1)(2n + 3) =\\n^2(2n) - (3n)(2n) + (1)2n + (n^2)(3) + (-3n)(3) + (1)(3)=\\2n^3 - 6n^2 + 2n + 3n^2 -9n + 3 =\\$

Collecting like terms and simplifying yields

$2n^3-3n^2-7n+3$

8 0

2 years ago

Pls help 10 points !! :))

Julli [10]

Answer:

The second one

Step-by-step explanation:

7 0

3 years ago

5. 3 yards 2 feet = __________ ft

dangina [55]

Answer:

17.9

Step-by-step explanation:

each yard is 3 feet, then add 2 extra feet to get 17.9

4 0

2 years ago

Read 2 more answers

Anyone know the answer

Reika [66]

The correct answer is C.

7 0

3 years ago