Answer:
3x-6
Step-by-step explanation:
3(x-2)
3 multiply both x and -2
3x-6
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Answer:
Only one
Because
3+5=8 there's no other way
Answer:
3.)138
4.) 149
Step-by-step explanation:
you add the two inside measures together.
Answer:
x = approx. 1.24 or -7.24
Step-by-step explanation:
It's hard to factor directly so we should use the quadratic formula or complete the square. I'm going to go with completing the square.
x²+6x-9=0
x²+6x=9
x²+6x is the same as x²+2·3·x, in order to make this into the algebraic identity (A+B)²=A²+2AB+B², we must add B², or in this case 3² to both sides. (A is x, B is 3)
x²+6x+9=18
(x+3)²= 18
x+3= ±√18
x= ±4.24 -3 (approximately 4.24)
First solution for x = 4.24-3 = 1.24
Second solution for x = -4.24-3 = -7.24
Answer:
The sample proportion is 0.36095.
Step-by-step explanation:
A confidence interval has two bounds, a lower bound and an upper bound.
The sample proportion is the halfway point betwen those two bounds, that is, the sum of those bounds divided by 2.
In this problem, we have that:
Lower bound: 0.2987
Upper bound: 0.4232
What is the sample proportion?
(0.2987 + 0.4232)/2 = 0.36095
The sample proportion is 0.36095.