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Ostrovityanka [42]
4 years ago
8

Step A: = –c + = Step B: = Determine the justification for the steps from the derivation of the quadratic formula. Justification

of step A: Justification of step B:
You get 88 POINTS if you answer!
Mathematics
2 answers:
kompoz [17]4 years ago
8 0
The correct answers are common denominator and multiplication property of equality.

Hope this helps! It was correct for me!
amid [387]4 years ago
5 0

Answer:

correct! thank u

Step-by-step explanation:


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3. Solve for x.<br> (x-2)(x+ 8) = 0
docker41 [41]

Answer:

x = 2, x = -8

Step-by-step explanation:

Since the equation equals 0, you know either (x-2) or (x+8) has to equal 0.

This means x = 2, and x = -8

Hope this helps!

8 0
3 years ago
Leonardo recorded his speed while skateboarding and determined he was traveling 18 feet per sec. How many feet could he travel i
hichkok12 [17]
The answer is 1080 ft/min
7 0
3 years ago
2. Kelsey has a list of possible functions. Pick one of the g(x) functions below and then describe to Kelsey the key features of
Gemiola [76]

Answer:

g(x) = (x + 2)(x − 1)(x − 2)

I picked the first one, because why not. :)

<u>End behavior.</u> This is a positive function; there are no negatives next to any of the xs. There are 3 xs, so it's a cubic; a positive cubic has a down-up end behavior.

<u>Y-intercept.</u> We can either graph this on the calculator/online or work it out algebraically. Multiply together the constants: +2 * -1 = -2, -2 * -2 = 4. So the y-intercept is at y = 4. (0,4). I've also attached the graph.

<u>Zeros / x-intercept.</u> This is really simple: set g(x) equal to 0, separate these three parenthesis (x+2) (x-1) and (x-2) into three equations by the Zero Product Property.

x+2 = 0

x = -2

x-1 = 0

x = 1

x-2 = 0

x = 2

So the function has three zeros at (-2,0) (1,0) and (2,0).

3 0
3 years ago
Dentists recommend people brush
RideAnS [48]

Answer: 28

Step-by-step explanation:

7 days of per week. Two times a day. Two minutes. 14 times per week, two minutes every time. 28 minutes per week.

8 0
3 years ago
Read 2 more answers
Football Air Pressure During the National Football League’s 2014 AFC championship game, officials measured the air pressure on 1
lord [1]

Answer:

The null hypothesis is: H_0 :\mu = 12.5

The alternative hypothesis is: H_a :\mu

Step-by-step explanation:

Consider the provided information.

It is given that the average air pressure in footballs used by the Patriots was significantly less than the allowable limit of 12.5 psi.

The null hypothesis indicates that there is no substantial difference between given populations, due to sampling or experimental error, any observed difference.

Therefore, the null hypothesis is: H_0 :\mu = 12.5

The required alternative hypothesis is: H_a :\mu

7 0
3 years ago
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