Answer: if ur on usatestprep then its C
Step-by-step explanation:
Answer:
The Answer is: 2.91 x 10^6
Step-by-step explanation:
Move the decimal from the right to left and count the number of moves, stopping at the next to last number.
Given:
2,910,000
In Scientific notation:
2.91 x 10^6
Hope this helps! Have an Awesome Day!! :-)
Answer:
25%
Step-by-step explanation:
Answer: Todd used 27 black tiles.
Step-by-step explanation:
Let x represent the number of black tiles that Todd used.
Todd uses 21 white tiles & some black tiles to make a mosaic. This means that the total number of white and black tiles that Todd used is 21 + x
Each tile has an area of 3 square centimeters. This means that the total area covered by the white tiles is
21 × 3 = 63 square centimeters
Also, the total area covered by the black tiles is
3 × x = 3x square centimeters
The mosaic has a total area of 144 square centimeters. This means that
3x + 63 = 144
3x = 144 - 63
3x = 81
x = 81/3 = 27
V=B+15
V+2B=180
Therefore:
3B+15=180
B=55
V=70
Check:
V+2B=180
70+2(55)=180
70+110=180
180=180. Checks.
