Answer:
=10
Step-by-step explanation:
5x-4x². (x=2)
5(2)-4(2)²
=10-0
=<em>1</em><em>0</em>
7 and 1/3 hope this helps
For this case, the first thing we must do is define variables:
t1: time to drive uphill
t2: time to drive downhill
We now write the system of equations:
t1 = 2 * t2 - 10
t1 - t2 = 65
To rewrite this problem as an equation with a variable, we clear t2 from equation 2:
t2 = t1 - 65
We substitute equation 1 and obtain an equation with a variable:
t1 = 2 * (t1 - 65) - 10
Clearing t1 we have:
t1 = 2t1 - 130 - 10
t1 = 2t1 - 140
2t1 - t1 = 140
t1 = 140 minutes
Answer:
System of equations:
t1 = 2 * t2 - 10
t1 - t2 = 65
Equation with a variable:
t1 = 2 * (t1 - 65) - 10
the drive uphill takes:
t1 = 140 minutes
Answer:
third option
Step-by-step explanation:
well, since
52 = –4•4 + 68 and
52 = 8•4 + 20
Answer:
i) Apples received by Esi = 360
ii) Apples received by Yaw = 240
Apples received by Kwabena = 200
Step-by-step explanation:
Total apples = 800
Apples received by Kwabena = (1/4) of 800
Apples received by Kwabena= 200 apples
Remaining apples = 800 - 200 = 600 apples
Ratio of apples shared by Esi and Yaw = 3 : 2
Total share = 3 + 2 = 5
Esi's share = 3/5 of 800
Esi's share = 360 apples
ii) Yaw's share = 600 - 360 = 240 apples