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Lynna [10]
2 years ago
8

Help! I need a=? And r=?% if I don't get my grade up I can't star drivers ed

Mathematics
1 answer:
lubasha [3.4K]2 years ago
7 0
Initial is 12
Percent 1.05(I think but you might have to convert it)
Y=12(1.05)(5)
Y=63
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Y=−2x+1<br> x−3y=11 find the solution using elimination.
yawa3891 [41]

Answer:

Step-by-step explanation:

Using first equation in the second gives you

x-3(-2x+1)=11

x+6x-3=11

7x-3=11

7x=14

x=2, making y=-2x+1 become

y=-2(2)+1

y=-4+1

y=-3 so the solution is the point

(2,-3)

3 0
2 years ago
A machine lifts up containers of coal from the mine and lowers empty containers down. The machine uses an electric motor connect
Shkiper50 [21]

Answer:

The maximum power available to the motor is 2.4 MW

Step-by-step explanation:

The power of  a circuit that has a current, I, and a voltage, V, is given by the relation

Electrical power, P = I²R = I× I×R = I × V

Therefore given that the parameters are;

Voltage in the d.c. power supply = 600 V d.c.

Maximum current in the motor = 4000 A

Therefore, we can find the power as follows;

Maximum motor power = Voltage × Current

The maximum motor power, P available =  600 V × 4000 A = 2400000 W which on converting to MW becomes;

The maximum power available to the motor , P = 2.4 MW.

4 0
2 years ago
Kayla is an operator. She takes 2 calls every 13 minutes. How many calls can she expect to receive in one hour?
kicyunya [14]

Answer: 390 calls

Step-by-step explanation:

13/2= 6.5

6.5 x 60 min= 390

6 0
2 years ago
Please help with right answers​
Nonamiya [84]
The answer is 25.

4 green balloons : 5 purple balloons
20 green balloons : 25 purple balloons.

In order to get to 20 from 4 u need to multiply by 5. Do that to each side and get 25
7 0
2 years ago
Read 2 more answers
Part B: Solve 4w − 7k = 28 for k. Show your work. (6 points)
Lina20 [59]
4w-7k=28
-7k=-4w+28

k=4/7w-4
6 0
3 years ago
Read 2 more answers
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