What do you do if you have a fraction saying.. 1 1/2 x 2 1/3

3 1/2.

Step-by-step explanation:

First you convert to an improper fraction with the top part geing greater than the bottom, as follows:

1 1/2 =  (1*2 + 1) / 2 = 3/2.

2 1/3 = (2*3 + 1) / 3 = 7/3.

When multiply these you just multiply the top parts and the bottom and, if necessary, simplify.

3/2 * 7/3 = 3*7 / 2*3

= 21/6      Now simplifying:

= 7/2      

Now we can convert this improper fraction to standard form:

Dividing 7 by 2 gives  3 with remainder 1 so we have

7/2 = 3 1/2. (answer).

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

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8