Answer:
27 tiles
Step-by-step explanation:
Here is the complete question :
Todd uses 21 white tiles and some black tiles to make a mosaic.the mosaic has a total area of 144 square centimeters. Each tile has an area of 3 square centimeters. How many black tiles did Todd use
<u><em>Steps to take to determine the answer</em></u>
- Determine the total area of the white tiles used. This can be determined by multiplying the number of white tiles by the area of a tile
- subtract the area of the white tiles from the total area of the mosaic.
- Divide the answer derived in the previous step by 3
Area of the white tile = area of each tile x total white tiles used
3 x 21 = 63cm²
144cm² - 63cm² = 81cm²
Number of black tiles used = 81cm² / 3cm² = 27 tiles
95% = 95/100
95/100 of 76/1. (Always remember that every whole number is over 1)
So now we have 95/100 of 76/1
We can't solve with "of"
So we'll have to change it to "times(x)".....when we do that, it would cause 76/1 to reciprocate to 1/76
So now we have this: 95/100 x 1/76
When we solve it this is what we'll get: 19/20 x 1/76 = 19/1520 = 1/80
R by 6 might be the word phrase
Step 1: Multiply -4 and 2x. That would be -8x
Step 2: Multiply -4 and -3. That would be 12 because a negative number times a negative number results in a positive number.
Step 3: Put it all together (8x+12)
Answer: C
Answer:
60
Step-by-step explanation:
Let's name "a number" "q."
The expression we can set up is 6+9q
Plug 6 in for q.
6+9(6)
6+54
60
