The answer is B.if you solve the other sideit will give -6 which is B
Let us assume that the number of days she practiced the piano to be "d"
Since she practiced 2/3 hours a day, the total number of hours would be: 2/3*d
Now we are given the total number of hours during summer that she practiced be be equal to 32/23
So we equate 2/3 * d to 32/23 to find d
2/3*d = 32/23
d = (32/23)/ (2/3)
d = (32/23) * (3/2)
d = 48/23 hours
The equation that can be used to find the number of days that she practiced piano during the summer is 2/3*d = 32/23
Answer:
A a. 25 minutes
Step-by-step explanation:
Let x = time in minutes.
Aquarium I contains y water at time x.
y = 4.6 + 1.2x
Aquarium II contains y water at time x,
y = 54.6 - 0.8x
We want the amounts of water to be equal, so we set the right parts of the equations equal and solve for x, the time in minutes.
4.6 + 1.2x = 54.6 - 0.8x
Subtract 4.6 from both sides.
Add 0.8x to both sides.
2x = 50
Divide both sides by 2.
x = 25
12 goes into 68 5 times, so put 5 on the top, and subtract 600 from 688. You will get 88 as your difference. 12 goes into 88 7 times, and since 12 times 7 is 84, put 84 under 88 and subtract it from 88. Your remainder will be 4.
Hope this helps!
(I have an example below)
He needs to take the LCM of 15 and 10. ( LCM = 30 )
15 × 2 = 30
10 × 3 = 30
Therefore,
Dan has to buy -
3 packets of sausages
AND
2 packets of bread rolls