Answer:
Amy drove 104 miles
Step-by-step explanation:
let 'a' = miles Amy drove
let '2a' = miles Jessica drove
a + 2a = 312
3a = 312
a = 312/3
a = 104
2a = 208
Check: 104+208 should equal 312 and it does
1/2
1= Numerator
2= Denominator
<span>Five less than a number is at least -28
n-the number
n - 5 < -28 |add 5 to both sides
n < -23
</span>
Answer:
A. m^2+7m+10=0
Step-by-step explanation:
This is a problem in pattern matching, and in substituting a variable for a pattern.
(x^2+3)^2 +7x^2 +21 = -10 . . . . . . given
(x^2 +3)^2 +7(x^2 +3) = -10 . . . . . factor the last two terms
m^2 +7m = -10 . . . . . . . . . . . . subsitute m for x^2 +3
m^2 +7m +10 = 0 . . . . . . . . add 10 to both sides; matches A