Counting in 19s: 19,38,57,76,95,104,123,132,151...
Counting in 7s: 7,14,21,28,35,42,49,56,63,70,77...
So a perfect square trinomial like
has its middle term, by multiplying 2 * the left guy * the right guy
so.. .let's see your equation now x² - 3x +n
so.. the middle term is 3x, neverminding the sign
600×3.5%=21. As a result, there are 21 phones that likely to be defective. Hope it help!
Answer:
25%
Step-by-step explanation:
Answer:
100 black marbles
Step-by-step explanation:
The experimental probability of a black marble is
P(black) = 4/20 = 1/5
We expect that out of the 500 marbles in the box, 1/5 of them are black
1/5 (500) = 100
There should be 100 black marbles