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Maru [420]
1 year ago
9

PLS HELP ASAP??!! Pls help me with 7,8,8

Mathematics
1 answer:
Schach [20]1 year ago
3 0

Answer:

Step-by-step explanation:

1144

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Chris is 2 years old and Jenny is 4 years old. In how many years will Jenny be 7 years younger than twice Chris' age?
makkiz [27]
Let x be the unknown number of years.
Let C be Chris' age and J be Jenny's age.
Then J+x = 2(C+x)-7
    ... describes this situation.
          4+x = 2(2+x) - 7
           4+x = 4 + 2x - 7
               x  =  2x -7         becomes 7=x

In 7 years, Jenny will be 7 years younger than twice Chris' age.

Check:  Is this true?     4+7 = 2(2+7)-7
                                       11  =  18-7, or 11=11               TRUE
7 0
3 years ago
A newsletter publisher believes that over 30% of their readers own a Rolls Royce. For marketing purposes, a potential advertiser
Drupady [299]

The conclusion regarding the publisher's claim regarding the hypothesis is that have sufficient evidence to support the claim that the proportion is less than 30% of their readers own a Rolls Royce.

<h3>What is a null hypothesis?</h3>

The null hypothesis is a statistical theory that suggests that no statistical relationship and significance exists in a set of given single observed variable, between two sets of observed data and measured phenomena.

Since we reject the null hypothesis , we have sufficient evidence to support the claim. In this case, we have sufficient evidence to support the claim that the proportion is less than 30% of their readers own a Rolls Royce.

Learn more about hypothesis on:

brainly.com/question/15980493

#SPJ1

Complete question:

A newsletter publisher believes that less than 30% of their readers own a Rolls Royce. For marketing purposes, a potential advertiser wants to confirm this claim. After performing a test at the 0.02 level of significance, the advertiser decides to reject the null hypothesis. What is the conclusion regarding the publisher's claim?

7 0
1 year ago
A set of six single-digit integers has a unique mode of 2. What is the largest possible
Sliva [168]

Answer:

6.5

Step-by-step explanation:

We can assume that 2 is the smallest integer in the set. That means we would have a minimum of 2 2s. Then the largest integer in the set is 9. Since we can't have more than one 9 (due to the mode of 2), the next largest number we can have is 8. After that would be 7. Then the last digit would be 6. So now the set contains { 2, 2, 6, 7, 8, 9}. To find the median in an even set, we need to take the middle numbers and find the average. In this case, the two numbers are 6 and 7. The average of 6 and 7 is 6.5.

6 0
4 years ago
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Based on the drawing, what is the area of the largest square?
valina [46]

Answer:

7

Step-by-step explanation:

5 0
3 years ago
Rewrite the following improper fraction as a mixed number : 19/5
NeX [460]

Answer:

3 4/5

Step-by-step explanation:

8 0
3 years ago
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