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olga_2 [115]
3 years ago
13

Mary, who is sixteen years old, is four times as old as her brother. how old will mary be when she is twice as old as her brothe

r? 20 24 25 26 28
Mathematics
1 answer:
mojhsa [17]3 years ago
6 0
Mary<span> is 2x = 2*12 = </span>24 years old<span>.</span>
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The answer to this is true
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0.989, 1.118, 1.637, 1.83, 1.01, 1.912, 1.115, 2.504, 2.2,1 3.3, 1.127, 1.281, 2.4, 0.356, 653.63, 1.714, 2.036, 1.305 from leas
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Answer:

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This is completing the square:

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2 years ago
What is true of an adjustable rate mortgage?
Varvara68 [4.7K]

Answer: B. the interest rate may change depending on the condition of the economy.


Step-by-step explanation:

By definition, in a adjustable-rate mortgage (which can be identified as ARM), the interest rates can fluctuates, this means that it can change periodically.

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5 0
2 years ago
A newspaper article states that 90% of drivers in Iowa wear their seatbelt. Suppose we are interested in estimating the proporti
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Answer:

The sample size is  n  = 3457

Step-by-step explanation:

From the we are told that

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From the question we are told the confidence level is  95% , hence the level of significance is    

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=>   \alpha = 0.05

Generally the sample size is mathematically represented as

       n  =[  \frac{ Z_{\frac{\alpha }{2} }  }{E} ]^2 * p(1-p)

=>  n  =[  \frac{ 1.96  }{0.01} ]^2 * 0.90(1-0.90)

=>   n  = 3457

8 0
3 years ago
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