Answer:
He can cut 6 sections this length.
Step-by-step explanation:
he has
7(12) = 84 inches of rope.
84-34.5 = 49.5
49.5/8.25 = 6
you devide the tops and then add the ratios and you mines it buy 180 and there should be your answer
You can know a perfect square trinomial:
i) if the coefficient of a² = 1.
ii) If you divide the middle number coefficient by 2 and you square it you get the last term.
Take for example the first option:
For all the options, the coefficient of a² = 1
a² + 4a + 16.
Coefficient of a = 4.
4/2 = 2
2² = 4, this does not equal the last term so it is not a perfect square trinomial.
a² + 14a + 49.
Coefficient of a = 14.
14/2 = 7
7² = 49, this is equal the last term so it is a perfect square trinomial.
And the perfect square is (a +7)²
Similarly if you test the last option.
a² + 26a + 169.
Coefficient of a = 26.
26/2 = 13
13² = 169, this is equal the last term so it is a perfect square trinomial.
And the perfect square is (a +13)²
So the only two options are: a² + 14a + 49 and a² + 26a + 169.
Other options do not pass this test.
Answer:
14/50 or 7/25 or 0.28 or 28%
Step-by-step explanation:
The spinner is spun 50 times. (8+6+9+11+9+7=50)
It lands on 1 or 2 a total of 14 times. (8+6=14)
So the experimental probability is 14 out of 50. There are several ways this can be represented. It depends on what your teacher wants. it could be as a fraction or a decimal or a percentage.
14/50 or 7/25 or 0.28 or 28%