Answer:
She will need 13.2 gallons to drive 286 miles
Step-by-step explanation:
Step 1
Consider the expression below;
T=G×N
where;
T-total miles traveled
G-number of miles per gallon
N=quantity of gas consumed
This can also be expressed as;
Total miles=number of miles per gallon×number of gallons
In our case;
T=260 miles
G=unknown
N=12 gallons
replacing;
260=G×12
12 G=260
G=260/12
G=21.67 miles per gallon
Step 2
Using the same expression;
T=G×N
where;
T=286 miles
G=21.67 miles per gallon
N=unknown
replacing;
286=21.67×N
21.67 N=286
N=286/21.67
N=13.2 gallons
She will need 13.2 gallons to drive 286 miles
2.3 plus 2.6 plus 2.9 plus 3.2 plus 3.5
Answer: 1, -1
Step-by-step explanation: This is a difference of squares when factored,
(x+1)(x-1)
Let's check using FOIL(First, outside, inside, last)
x * x =x^2
1 *x =x
x * (-1) =-x
1* -1 =-1
so x^2 +x -x -1
=x^2 -1
d = 2(4 + c)
adding 4 and c, which is the sum, and multiplying that by 2 will give us d.
Answer:
5 times x minus 8 minus 7
Step-by-step explanation:
whenever you see an x right next to a number, it means that it's being multiplied for that number. For example: 2x mean 2 times x
This symbol - is a minus symbol. So when it's in front of a number, you say "minus" and then the number. For example: 4 - 3 means, Four minus three.