Algebra
For example, (x)(x)=x^2
Add the exponents of the variable to get the correct answer.
(k^3)(k^5)=k^8
<span>x = Joe's age and </span><span>y = James's age
</span><span>Joe is 10 years older than James - equation - x = y + 10
</span><span>In 8 years twice Joe's age will equal three times James's age - equation -
2(x+8) = 3(y+8)
</span>
<span>2(x+8) = 3(y+8) </span>
<span>2(y + 10 +8) = 3(y+8) { substitute y + 10 for x </span>
<span>2(y + 18) = 3(y + 8) </span>
<span>2y + 36 = 3y + 24 </span>
<span>12 = y </span>
<span>Joe is 22 and James is 12.</span>
Answer:
24 miles
Step-by-step explanation:
2 miles:10 seconds
? miles: 120 seconds
120 divided by 10 =12
12 x 2 =24
