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3 years ago

How do you solve y=3x²-6x-1 using completing the square?

1 answer:

3 0

(B/2)^2 is the formula you need to complete the square
B is the second term which is -6
So let’s plug it into the formula
(-6/2)^2
(-3)^2= 9

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X/6 + 12 = 6<br> Please help me

otez555 [7]

Answer:

$x=-36$

Step-by-step explanation:

$\frac{x}{6} +12=6$

$\frac{-36}{6} +12=6$

$-6+12=6$

Hence, x = -36

8 0

3 years ago

Read 2 more answers

6x-3 <-9 can someone help me asap

Zanzabum

Answer:

x<-1

Step-by-step explanation:

6x-3 <-9

Add 3 to each side

6x-3+3 <-9+3

6x < -6

Divide by 6

6x/6 < -6/6

x < -1

7 0

3 years ago

Read 2 more answers

A particular amusement park ride will make 156 revolutions in 180 sec at this rate how many revolutions will it take to make 2 m

Nadya [2.5K]

104 revolutions in two minutes.

6 0

3 years ago

What is the value of r?<br> Round your final answer to the nearest whole number.

vaieri [72.5K]

Answer:

r = 13

Step-by-step explanation:

Hypotenuse is the side opposite to 90 degree angle, so hypotenuse is r.

Also, with respect to the angle given, the side "12" is the opposite.

So we have opposite side to angle and we need hypotenuse. Which trigonometric ratio related opposite with hypotenuse? It is SINE.

So we can write:

$Sin(67.4)=\frac{Opposite}{Hypotenuse}=\frac{12}{r}\\rSin(67.4)=12\\r=\frac{12}{Sin(67.4)}\\r=12.99$

Rounded to nearest whole number, r = 13

8 0

4 years ago

Read 2 more answers

Find linear models for each set of data. In what year will the two quantities be equal? x y 1970 67.8 1975 69.6 1980 70.5 1985

DaniilM [7]

Answer:

The graph solution is defined in the attachment file please find it.

Step-by-step explanation:

The first line equation:

$\to Y= 0.22x + 67.5\\\\$

The second line equation:

$\to Y= 0.15x + 75.507\\\\$

Intersection points:

$\to (114.387,92.665)\\\\$

By adding the value of the first year (1970) into the x-value that is

$\to 114.387+1970=2084.387$

4 0

3 years ago