Briana does because she is .75 mph faster than Seth
9514 1404 393
Explanation:
Expand the right side using the distributive property, then collect terms.
x² -y² = (x -y)(x +y)
= (x)(x +y) -y(x +y)
= x² +xy -yx -y²
= x² +(xy -xy) -y²
= x² -y² . . . . . . . . . . as required
Answer:
(i) 1/9.
(ii) 52/225
(iii) 41/225.
Step-by-step explanation:
There are 15 balls in the bag.
So:
(i) Prob(2 red balls) = 5/15 * 5/15
= 1/3 * 1/3
= 1/9.
(ii) (i) Prob(2 blues) = 6/15 * 6/15
= 36/225.
Prob( 2 blacks) = 4/15 * 4/15
= 16/225
So the probability of 2 blues or 2 blacks
4/25 + 16/225
= 52/225.
(iii) Prob ( red ball then black) = 5/15 * 5/15 = 25/225.
Prob(black ball then red ball) = 4/15 * 4/15 = 16/225
So the probability of 1 black and 1 red = 41/225.
You can write 1/4 as a decimal, equivalent fraction, and a percent.
To change 1/4 into a decimal, divide the numerator by the denominator. You will get 0.25. To make 1/4 into a percent, multiply the decimal by 100 or just move the decimal two places to the right. The percent is 25%. To make 1/4 into another equivalent fraction, multiply the numerator and denominator by the same number. For example, you can multiply the numerator by 2 and the denominator by 2. So, another equivalent fraction for 1/4 is 2/8.
Hope it helps :)
Answer:
A
Step-by-step explanation:
-1/2(2-2x)+3
Use the distributive property:
Add like terms: