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Alexeev081 [22]
3 years ago
6

Which trinomial is equivalent to 3(x-2)^2 -2(x-1)?

Mathematics
1 answer:
Alex3 years ago
8 0
Hope this isn't to late 3x^3-6x^2-2x+2
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If f(x) = 3(x+5) +-, what is f(a+2)?<br> xx, (a?<br> X
Rashid [163]

<u></u>

Given a defined function

f(x), we can evaluate the function at any constant by replacing every x

with that constant.So if f(x)=3x+5x, then f(a+2)=3(a+2)\+5a+2

5 0
2 years ago
In a random sample of fivefive microwave​ ovens, the mean repair cost was ​$75.0075.00 and the standard deviation was ​$13.0013.
Radda [10]
<h2>Answer with explanation:</h2>

As per given , we have

Sample size : n= 5

Degree pf freedom = : df= 5-1=4

\mu=\$75.00

\sigma=\$13.00

Significance level for 90% confidence = \alpha=1-0.90=0.1

Using t-value table , t-critical value for 90% confidence:

t_{\alpha/2, df}=t_{0.05, 4}=2.132.

Margin of error of \mu: E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\(2.132)\dfrac{13}{\sqrt{5}}=12.3949720129\approx12.39

Interpretation : The repair cost will be within $12.39 of the real population mean value \mu 90% of the time.

7 0
3 years ago
If the area of a circle is 16π meters, what is the diameter? *
Lera25 [3.4K]

Answer:

When the diameter is given you just take half of it so simply put what is half of 16pi and it will give your answer. :)

Step-by-step explanation:

7 0
3 years ago
6x + 7y = 1<br> 8x – 3y = 25<br> Solve me fast explainly
Elenna [48]

Answer:

{x,y} = {89/37,-71/37}

Step-by-step explanation:

 8x = 3y + 25

 [2]    x = 3y/8 + 25/8

Plug this in for variable  x  in equation [1]

  [1]    6•(3y/8+25/8) + 7y = 1

  [1]    37y/4 = -71/4

  [1]    37y = -71

Solve equation [1] for the variable  y  

  [1]    37y = - 71

  [1]    y = - 71/37

By now we know this much :

   x = 3y/8+25/8

   y = -71/37

Use the  y  value to solve for  x  

   x = (3/8)(-71/37)+25/8 = 89/37

5 0
2 years ago
If someone answers this you’re gonna be brainliest
Yakvenalex [24]

Answer:

It was helpful to construct points D and A to be the same distance from C because it gives you an equal arc on both sides, which will intersect twice, forming a colinear line that is perpendicular to line AB.

Step-by-step explanation:

4 0
2 years ago
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