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belka [17]
3 years ago
9

The $5 are correct but it marked the .75 as wrong

Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0
Maybe try changing it to 3/4?
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If using the method of completing the square to solve the quadratic equation x2+14x-14=0, which number would have to be added to
DedPeter [7]

Step-by-step explanation:

the number that would be added would be

49

6 0
3 years ago
A random sample of 25 fields of rye has a mean yield of 31.2 bushels per acre and standard deviation of 6.99 bushels per acre. D
Murrr4er [49]

Answer:

Critical value is 1.318 and the confidence interval is 29.357 to  33.042

Step-by-step explanation:

n = 25

x = 31.2

s = 6.99

Degree of freedom = n-1= 25-1 =24

Confidence level = 0.8

So, α = 1- 0.8= 0.2

t critical = t_{\frac{\alpha}{2},df}=t_{\frac{0.2}{2},24}=t_{0.10,24}=1.318

Formula of confidence interval : \bar{x}-t_{\frac{\alpha}{2},df} \times \frac{s}{\sqrt{n}} to  \bar{x}+t_{\frac{\alpha}{2},df} \times \frac{s}{\sqrt{n}}

Confidence interval : 31.2-1.318 \times \frac{6.99}{\sqrt{25}} to  31.2+1.318 \times \frac{6.99}{\sqrt{25}}

Confidence interval : 29.357 to  33.042

Hence critical value is 1.318 and the confidence interval is 29.357 to  33.042

3 0
3 years ago
Can you explain how to solve this problem ​
iVinArrow [24]

Answer:

Step 1:

Start by setting it up with the divisor 10 on the left side and the dividend 179 on the right side like this:

             

 1 0 ⟌ 1 7 9

Step 2:

The divisor (10) goes into the first digit of the dividend (1), 0 time(s). Therefore, put 0 on top:

       0    

 1 0 ⟌ 1 7 9

Step 3:

Multiply the divisor by the result in the previous step (10 x 0 = 0) and write that answer below the dividend.

       0    

 1 0 ⟌ 1 7 9

      0    

Step 4:

Subtract the result in the previous step from the first digit of the dividend (1 - 0 = 1) and write the answer below.

       0    

 1 0 ⟌ 1 7 9

     - 0    

       1    

Step 5:

Move down the 2nd digit of the dividend (7) like this:

       0    

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

Step 6:

The divisor (10) goes into the bottom number (17), 1 time(s). Therefore, put 1 on top:

       0 1  

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

Step 7:

Multiply the divisor by the result in the previous step (10 x 1 = 10) and write that answer at the bottom:

       0 1  

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

       1 0  

Step 8:

Subtract the result in the previous step from the number written above it. (17 - 10 = 7) and write the answer at the bottom.

       0 1  

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

     - 1 0  

         7  

Step 9:

Move down the last digit of the dividend (9) like this:

       0 1  

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

     - 1 0  

         7 9

Step 10:

The divisor (10) goes into the bottom number (79), 7 time(s). Therefore put 7 on top:

       0 1 7

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

     - 1 0  

         7 9

Step 11:

Multiply the divisor by the result in the previous step (10 x 7 = 70) and write the answer at the bottom:

       0 1 7

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

     - 1 0  

         7 9

         7 0

Step 12:

Subtract the result in the previous step from the number written above it. (79 - 70 = 9) and write the answer at the bottom.

       0 1 7

 1 0 ⟌ 1 7 9

     - 0    

       1 7  

     - 1 0  

         7 9

     -   7 0

           9

You are done, because there are no more digits to move down from the dividend.

The answer is the top number and the remainder is the bottom number.

Therefore, the answer to 179 divided by 10 calculated using Long Division is:

17

9 Remainder

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the Perimeter of the figure below, composed of a rectangle and two semicircles. Round to the nearest tenths place.
MatroZZZ [7]

Step-by-step explanation:

the perimeter = 2 ×15 + (π×d)

= 30 + (3.14 ×10)

= 30 + 31.4

= 61.4

4 0
3 years ago
Help this question for me?!
iogann1982 [59]

Answer:

2.8 pounds

Step-by-step explanation:

6 0
3 years ago
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