3 years ago

Select Expansion or Contraction to correctly describe the type of dilation for each given scale factor.

Mathematics

1 answer:

Tanya [424]3 years ago

5 0

Answer:

Step-by-step explanation:

if you are going in a negative direction or by a decimal you are contracting, so the image would get smaller. If you are going in a positive direction(has to be a whole number as well) you have an expansion.

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Of the following sets, which represents a function? Situation A = {student's name, all the colors that the student likes} Situat

luda_lava [24]

Answer:

Situation A

Step-by-step explanation:

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3 years ago

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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

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