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Savatey [412]
3 years ago
15

What is the simplified expression for 3a+9ab+5-4a2-4ab+3

Mathematics
1 answer:
zheka24 [161]3 years ago
4 0
Answer:
5ab-4a^2+3a+8
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At a restaurant grand opening, a giant sandwich that was 352 centimeters long was divided equally among 22 people. Clyde got one
snow_lady [41]

Answer:

8 cm

Step-by-step explanation:

You neglected to include any equations

Here is one way to solve:

length of each piece

352/22 = 16

Half a piece

16/2 = 8

Choice C

352/22/2 = l

5 0
3 years ago
Arrange these numbers from least to greatest
iogann1982 [59]
A. -3/7 = -0.4286
b. -5/6 = -0.8333
c. -3/5 = -0.6000
d. -7/9 = -0.7777
bdca is least to greatest

Correct answer is D.
4 0
3 years ago
If you have a 5 letters A,B,C,D,E and you can put them in any order how many ways can you place them
IceJOKER [234]

The first letter can be any one of 5.  For each of those . . .
The second letter can be any one of the remaining 4.  For each of those . . .
The third letter can be any one of the remaining 3.  For each of those . . .
The fourth letter can be any one of the remaining 2.  For either of those . . .
The fifth letter is the last remaining one.

  Total number of possibilities = (5 x 4 x 3 x 2 x 1)  = 

                                                          <em> 120 ways</em> to line them up.

Now, may I say that being a hater of school is not something that
makes you cool.  Maybe it does make you one of the crowd, but life
is not a war between you and school.  School is simply something that
a lot of grown-ups spend a lot of money on, and a lot of teachers spend
their whole life on, to make sure that a lot of kids won't go through <em><u>their</u></em>
whole life stupid.  You can learn everything you ever want to know there,
and it's all free.  That's a pretty good deal.

4 0
3 years ago
Peter took one of his friends out to lunch. The lunches cost $100 plus he
77julia77 [94]

Answer:

Tax = $12 Tip = $18 Total Cost = $130

Step-by-step explanation:

tax = tax percentage x amount

0.12 x 100 = 12

tip = tip percentage x amount

0.18 x 100 = 18

The Total Cost

total cost = cost + tax + tip

100 + 12 + 18

Add them up and it would be

$130

5 0
3 years ago
Which of the following estimates at a 95% confidence level most likely comes from a small sample
Nikitich [7]

Answer:

Answer is c

Step-by-step explanation:

In hypothesis testing whether to accept or reject null hypothesis, normally we find one method as using confidence interval.  If the test statistic lies within confidence interval, we accept otherwise we reject.

For arriving confidence intervals we add and subtract margin of error from the mean we use in null hypothesis.

Margin of error = std error * critical value of test (Z or t etc)

For the same std deviation, std error = std dev/sq rt of sample size

Thus std error is inversely proportional to the square root of sample size.

If n becomes larger, std error becomes smaller and vice versa.

So margin of error increases for smaller sample size.

Since we have to select confidence level from a small sample, we have to select one which has the greatest margin of error=18

Hence answer is

c)  71%(+/-18%)

5 0
3 years ago
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