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Oksanka [162]
3 years ago
8

121 is 55% of what number?A.) 220B.) 121C.) 66.55D.) 242

Mathematics
1 answer:
Rama09 [41]3 years ago
3 0
121/0.55=220

A is correct. Hope this helps!
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Describe what a finite graph is and give an example of how a finite graph would be used to represent something.
skelet666 [1.2K]

Answer:

A graph with a set amount of numbers.

Step-by-step explanation:

Infinite means never ending and that's what most graphs are. But, a finite graph is a graph that doesn't have arrows at the end of the lines. (simplified answer) A better way of saying it is a graph with a fixed starting position and a fixed ending position. You can use this type of graph if you don't want to go over or under a certain value.

Hope this helps!

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A two digit number is written at random what is the probability that the number will be odd
leonid [27]

Answer:

50%

Step-by-step explanation:

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3 years ago
A survey of 1 comma 558 randomly selected adults showed that 522 of them have heard of a new electronic reader. The accompanying
sineoko [7]

Answer with explanation:

Let  p be the proportion of adults have heard of the new electronic reader.

Given claim : The accompanying technology display results from a test of the claim that 38​% of adults have heard of the new electronic reader.

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Then , the set of hypothesis will be :-

H_0: p=0.38\\\\H_a:p\neq0.38

Since, the alternative hypothesis is two tailed , so the test is two-tailed test.

Also, it is given that the sample size : n=1558

Number of adults showed that they have heard of a new electronic reader=522

So the sample proportion for adults have heard of the new electronic reader : \hat{p}=\dfrac{522}{1558}\approx0.34



The test statistic for proportion is given by :-

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\\Rightarrow\ z=\dfrac{0.34-0.38}{\sqrt{\dfrac{0.38(1-0.38)}{1558}}}\\\\\\\Rightarrow\ z=-3.25279036541\approx-3.25

By using standard normal distribution table , the P-value for two tailed test corresponds to the obtained z-value ==0.0011541

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3 years ago
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4 0
3 years ago
Old McDonald has a farm with 36 cows and goats the number of cars he has 10 more than the number of coats how many of each anima
Vanyuwa [196]

Answer:

13 goats and 23 cows

Step-by-step explanation:

Use x to solve :) it's a hint

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3 years ago
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