Answer:
Answer is D
Step-by-step explanation:
I took the test and it is right because there are 2 chunks of dots in two spots
Answer: b
Step-by-step explanation:
Ound your χ2 to three decimal places and round your P-value to four<span> decimal places.) 0. Ask for details; Follow · Report ... </span>Suppose<span> a </span>family stability measure<span> was </span>administered<span> in </span>four public high schools<span> to a </span>sample<span> of </span>24 students<span> who </span>attend<span> the </span>schools<span>. The </span>scores below<span> were obtained. Is there a difference in.</span>
Answer:
Step-by-step explanation:
Let s represent the son's age now. Then s+32 is the father's age. In 4 years, we have ...
5(s+4) = (s+32)+4
5s +20 = s +36 . . . . . eliminate parentheses
4s = 16 . . . . . . . . . . . . subtract s+20
s = 4
The son is now 4 years old; the father, 36.
_____
<em>Alternate solution</em>
In 4 years, the ratio of ages is ...
father : son = 5 : 1
The difference of their ages at that time is 5-1 = 4 "ratio units". Since the difference in ages is 32 years, each ratio unit must stand for 32/4 = 8 years. That is, the future age ratio is ...
father : son = 40 : 8
So, now (4 years earlier), the ages must be ...
father: 36; son: 4.
Answer:
Step-by-step explanation:
