Answer:
- 
Step-by-step explanation:
Step 1: Add the numerator fractions.
2/5 + 3/10
Here we have to find LCD, the LCD of 5 and 10 is 10
(2*2) + 3 4 + 3
Therefore, 2/5 + 3/10 = --------------- = ------------------
10 10
= 7/10
Step 2: Now substitute 2/5 + 3/10 = 7/10 in the given fraction, we get
7/10
= ----------
-7/9
If we have fraction over fraction, we have to find the reciprocal of denominator fraction and multiply.
The reciprocal of -7/9 is -9/7
Step 3: Now multiply 13/10 and -9/7
= (7/10) x (-9/7)
= -9/10
=-9/10
The answer is -
Answer:
B.
Step-by-step explanation:
10.99x4=43.96 x .05 for sales tax = 45.94 20/100= x/45.94= 100x 918.8/100 = 9.188 45.94- 9.188 =$36.752
The number of CDs in Walter’s collection = x
The number of CDs in Brian’s collection = 3x
The total number of CDs in both collections = 144
Then
x + 3x = 144
4x = 144
x = 36
From the above deduction, we can conclude that the correct option among all the options that are given in the question is the last option or option "J".
Answer:
D. for the first one, A. for the second (not certain)
Step-by-step explanation:
1. 36/2 (two books every visit) = 18, multiplied by 3 because that's how many often he does to the library (every 3 weeks)
2. 13/2 = w/5 because for every 13 cups of water, there is two cups of cleaner, so for w (unknown amount of water) there would be 5 cups of concontrated cleaner.
