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Vinil7 [7]
3 years ago
5

How to find b with (4a-b) + (4b-a) = 180

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
6 0

Answer:

just simplify it ...

Step-by-step explanation:

  1. 4a-b+4b-a=180
  2. 3a+3b=180
  3. 3(a+b)=180
  4. both sides divide by 3
  5. a+b =60
  6. b=60-a
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Can you help me please
SIZIF [17.4K]

Answer:

a) 3

b) 15

c) 5

d) 9

e) 5

f) 2

Step-by-step explanation:

How you will put it in the box below:

3, 15, 5, 9, 5, 2

7 0
3 years ago
. A theater has 40 rows of seats, where the first row has 27 seats and each subsequent row has
MAXImum [283]
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6 0
3 years ago
One way to show that a statement is not a good definition is to find a
guapka [62]

counterexaple

i hope it helps

4 0
3 years ago
Ardem collected data from a class survey. He then randomly selected samples of five responses to generate four samples.
scoundrel [369]

Solution: The sample mean of sample 1 is:

\bar{x}=\frac{4+5+2+4+3}{5}= \frac{18}{5}=3.6

The sample mean of sample 2 is:

\bar{x}=\frac{2+2+6+5+7}{5}= \frac{22}{5}=4.4

The sample mean of sample 3 is:

\bar{x}=\frac{4+6+3+4+1}{5}= \frac{18}{5}=3.6

The sample mean of sample 4 is:

\bar{x}=\frac{5+2+4+3+6}{5}= \frac{20}{5}=4

The minimum sample mean of the four sample means is 3.6 and maximum sample mean of the four sample means is 4.4.

Therefore, using  his four samples, between 3.6 and 4.4 will Ardem's actual population mean lie.

Hence the option 3.6 and 4.4 is correct

6 0
3 years ago
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Statistics Question. Use the Desmos graphing calculator to find the least-squares regression line for the dataset in the table:
Soloha48 [4]

Given:

The table of values.

To find:

The least-squares regression line for the data set in the table by using the desmos graphing calculator.

Solution:

The general form of least-squares regression line is:

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By using the desmos graphing calculator, we get

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Substitute these values in (i).

\hat{y}=(2.55)x+(-6.435)

\hat{y}=2.55x-6.435

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