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3 years ago

Find the lower bound for the following lengths:

Mathematics

1 answer:

ikadub [295]3 years ago

7 0

Answer:

a) Lower bound = 39.5

b) Lower bound = 82.75

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If f(x) = 3^(x + 4), find f(2). A. 729 B. 243 C. 81 D. 18

Umnica [9.8K]

Answer:

f(2) = 729

Step-by-step explanation:

f(x) = 3^(x + 4)

Let x =2

f(2) = 3^(2 + 4)

f(2) = 3^(6)

f(2) = 729

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3 years ago

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julsineya [31]

The answer is -8/1 two negatives equals negative which would be -11 then subtract positive 3 equals-8

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2 years ago

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Whitepunk [10]

Wait but that is a test don't you need to look at a book or something insteadt of waiting for the answers

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3 years ago

Read 2 more answers

A consumer group is interested in estimating the proportion of packages of ground beef sold at a particular store that have an a

storchak [24]

Answer: 267.

Step-by-step explanation:

When there is no prior information for the population proportion, then the formula we use to find the sample size to estimate the confidence interval :

$n=0.25(\dfrac{z^*}{E})^2$ , where z* = Critical z-value and E + amrgin of error.

Let p = proportion of packages of ground beef sold at a particular store that have an actual fat content exceeding the fat content stated on the label.

Since , we have no prior information about p. so we use above formula

with E = 0.06 and critical value for 95% confidence =z* =1.96 [By z-table ] , we get

$n=0.25(\dfrac{1.96}{0.06})^2=0.25(32.6666)^2\\\\=(0.25)(1067.111111)\\\\=266.777777778\approx267$

Hence, the required sample size is 267.

7 0

3 years ago

Which expression is equivalent to 5x+10y-15?

Papessa [141]

Answer:

Step-by-step explanation:

I think it's 5(x+2y-3)

5 0

3 years ago