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BigorU [14]
3 years ago
5

which of the following algebraic expression can be used to express the statement three less than z squared

Mathematics
1 answer:
frez [133]3 years ago
3 0
z^{2}-3
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What the percent of 160 is 56? Use the bar model
kow [346]

Answer:

35%

Step-by-step explanation:

See attached for visual

  • 160= 8*20
  • 8 = 1/20 = 5% of 160
  • 56= 8*7
  • 7*5% = 35%

56 is 35% of 160

8 0
3 years ago
4n+1=25<br>Please help with an explanation ​
dlinn [17]

Answer:

n = 6

Step-by-step explanation:

To isolate n, subtract 1 from both sides:

4n + 1 = 25

4n = 24

Then divide by 4 on both sides:

4n = 24

n = 6

Hope this helped :)

4 0
2 years ago
Read 2 more answers
Researchers at Gallup were interested in whether there was a decrease in the proportion of nonretirees (in other words, people w
Lera25 [3.4K]

Answer:

A. We have extremely strong evidence to reject H0.

Step-by-step explanation:

Let P be the proportion of non-retirees in 2015 who did not think that Social Security would be able to pay a retirement benefit by the time that they retire.

According to the data null and alternative hypotheses should be:

  • H_{0}: P=0.60
  • H_{a}: P<0.60

Test statistics is -4.29 and p-value of the statistics is p<0.001

At every significance levels higher than 0.001, we can reject the null hypothesis since p<0.001.

8 0
3 years ago
Which expression is equivalent to d-6d-3dd−6d−3d?
Softa [21]

Answer:-8d -9dd

Step-by-step explanation:I looked it up :)I'm not good at math so yeahhh but I hope this is right but if not I'll try again

7 0
3 years ago
Please help please please
Murrr4er [49]
2 pages per hour.

the fractions can be turned to decimals easily, 4/5 is 0.8 and 2/5 is 0.4 . divide those decimals together and you get 2.
4 0
3 years ago
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