To find 12 meters in 28 seconds, you will divide the 12 by 28 as follows:
12 / 28 = 3/7
Dividing distance by time usually gives you velocity. This means that moving 12 meters in 28 seconds means that the object moves 3/7 meters in one second.
Answer:
10 amps.
Step-by-step explanation:
According to Ohm's Law, V=IR, and, dividing both sides by R, we have 
, where V is the amount of volts, R is the amount of resistance, and I is the current in amps.
Plugging the values into the formula, we have 
.
Therefore, there is 10 amps of current in the circuit.
Get rid of parenthesis.
z + z + 6
Add common terms together.
2z + 6 is an expresssion equivalent to z + (z+6)
Hope this helps!
Answer:
<u>£4.20</u>
Step-by-step explanation:
Let :
- cost of 1 kg banana = x
- cost of 1 kg apple = y
Equations formed :
- 4x + 3y = 7.50 [Equation 1]
- 3x + 5y = 8.10 [Equation 2]
Multiply Equation 1 by 5 and Equation 2 by 3 :
- 20x + 15y = 37.50
- 9x + 15y = 24.30
Subtract the newly formed equations :
- 11x = 13.20
- <u>x = 1.20</u>
Finding y :
- 4(1.20) + 3y = 7.50
- 4.80 + 3y = 7.50
- 3y = 2.70
- <u>y = 0.90</u>
Then :
- Cost of 1 kg banana = £1.20
- Cost of 1 kg apple = £0.90
Cost of 2 kg bananas and 2 kg of apples :
- 2(1.20) + 2(0.90)
- 2(2.10)
- <u>£4.20</u>
