Answer:
140 minutes
Step-by-step explanation:
After 28 mins you've gone 4 miles, assuming this rate is constant and you dont slow down or speed up, in order to get to 20 miles you will have run 5x as much (20/4 = 5), thus 5x the amount of time (28x5).
20/4 = 5
5x28 = 140
Answer:
x = -11
Step-by-step explanation:
2x - 7 = 3x - 2x - 18
2x - 7 = x - 18
collect like terms
2x - x = 7 - 18
x = -11
3x + 5 (first plug in 2 for x )
3(2) + 5 =
6 + 5 = 11
Hope this helps . Give brainliest
Answer:
C
Step-by-step explanation:
Using Pythagoras' identity to determine if the triangle is right
The square of the longest side should equal the sum of the squares on the other 2 sides, that is
QS² = RS² + QR² = 8² + 5² = 64 + 25 = 89 ( take the square root of both sides )
QS = 
Δ QRS is not right as QS would have to be
Answer:
x=-200
Step-by-step explanation:
x/-10 -4 = 16
Add 4 to each side
x/-10 -4+4 = 16+4
-x/10 = 20
Multiply each side by -10
-x/10 *-10 =-10*20
x = -200
