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Ipatiy [6.2K]
2 years ago
5

I NEED help Zane is determining whether the given value of the variable is a solution of the equation.

Mathematics
2 answers:
posledela2 years ago
3 0

Answer:

a, d, f

Step-by-step explanation:

icang [17]2 years ago
3 0

Answer:

A d and f

Step-by-step explanation:

I just did it

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Write the equation of the parabola below
lorasvet [3.4K]
Answer:
Equation is: y = 0.5x² + 0.5x - 3

Explanation:
general form of the parabola is:
y = ax² + bx + c

Now, we will need to solve for a, b and c.
To do this, we will simply get points from the graph, substitute in the general equation and solve for the missing coefficients.

First point that we will use is (0,-3). 
y = y = ax² + bx + c
-3 = a(0)² + b(0) + c
c = -3

The equation now becomes:
y = ax² + bx - 3

The second point that we will use is (2,0):
y = ax² + bx - 3
0 = a(2)² + b(2) - 3
0 = 4a + 2b -3
4a + 2b = 3
This means that:
2b = 3 - 4a
b = 1.5 - 2a ...........> I

The third point that we will use is (-3,0):
y = ax² + bx - 3
0 = a(-3)² + b(-3) - 3
0 = 9a - 3b - 3
9a - 3b = 3 ...........> II

Substitute with I in II and solve for a as follows:
9a - 3b = 3
9a - 3(1.5 - 2a) = 3
9a - 4.5 + 6a = 3
15a = 7.5
a = 7.5 / 15
a = 0.5

Substitute with the value of a in equation I to get b as follows:
b = 1.5 - 2a 
b = 1.5 - 2(0.5)
b = 0.5

Substitute with a and b in the equation as follows:
y = 0.5x² + 0.5x - 3

Hope this helps :)
7 0
3 years ago
If a is a solution of abs(x+3)>4, then is a also a solution of x+3>4?
Alexandra [31]

Answer:

Yes

Step-by-step explanation:

After solving for the two values of a, the second inequality gives a value inside the range of the first inequality.

7 0
3 years ago
Can you help me or at least guide me through writing a proof on this?<br> I'm a bit stuck
Andrew [12]

Answer:basically if what they want you to prove is correct say it is correct and why is it correct

Step-by-step explanation:

5 0
2 years ago
There are 132 people seated in the school auditorium for an assembly.  There are 6 rows in the auditorium, each with the same nu
Damm [24]
You do 132 ÷ 6 which is 22, so that is the answer. This is because if you the auditorium is filled, then there are a total of 132 seats. If there are 6 rows, then there have to be 22 seats each row to make 132 seats. I hope this helps!
7 0
3 years ago
Read 2 more answers
I REALLY NEED HELP WITH THIS QUESTION ILL GIVE 15 FREE POINTS PLUS BRAINLIEST FOR CORRECT ANSWER!!!
Damm [24]

Answer:

C. Irrational because it is a non-terminating and non repeating

3 0
3 years ago
Read 2 more answers
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