3 gallons cost 10.50
20 gallons / 3 = 6 2/3
6 2/3 * 10.50 = 70
they need $70 for the trip
Answer:
f(-2) = 1.
Step-by-step explanation:
If we are solving for f(-2), we will simply need to substitute in '-2' for 'x'. This gives us:
f(-2) = -2 + 3
f(-2) = 1.
Answer:
57 kph
Step-by-step explanation:
5x + 5(x-12) = 750
10x = 690
x = 69
Slooow car = 57 kph
For a complimentary pair of angles i.e a+b=90 degrees, then cos a= sin b
so;
3x+2=4x-10
2+10=4x-3x
x=12.0
Answer:
Step-by-step explanation:
Let's begin by identifying the lengths of the three sides of the triangle:
length of side 1 = 17
length of side 2 = 2x - 1 (1 less than twice side 3)
length of side 3 = x
Now let's apply the Triangle Inequality Theorem to this triangle:
side 1 + side 2 > side 3:
17 + 2x - 1 > x
16 + 2x > x
2x - x > -16
x > -16 (reject negative measurement)
2x - 1 > -33 (reject negative measurement)
side 1 + side 3 > side 2
17 + x > 2x - 1
x - 2x > -1 - 17
-x > -18
x < 18
2x - 1 < 35
side 2 + side 3 > side 1
2x - 1 + x > 17
3x - 1 > 17
3x > 18
x > 6
2x - 1 > 11
Thus, we have our answers based on the value of x:
6 < x (length of side 3) < 18
11 < 2x - 1 (length of side 2) < 35
Thanks for submitting this problem and glad to help.