Mary lou has 2 more nickels then pennies and she has 30 coins all together select the equation that most accurately depicts the word problem a. 2(x+2)=30 b. x+(x+2)=30 c. 2x+30=5 d. x+2=30

Step-by-step explanation:

Let the pennies be represented by = x

Let nickels be represented by = y

Mary Lou has 2 more nickels then pennies.

We get

Also given that she has 30 coins all together.

Substituting y here, we get the requires equation as:

Now, solving this we will get the value of x.

x = 14

And

So, there are 14 pennies and 16 nickels.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²