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disa [49]
3 years ago
6

Which phrase includes “being equal to 50”?

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
4 0
What are the answer choices??


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The equation for a parabola has the form y=????x2+????x+cy=ax2+bx+c, where ????a, ????b, and cc are constants and ????≠0a≠0. Fin
d1i1m1o1n [39]

The equation for this parabola satisfies

\begin{cases}a-b+c=9\\9a+3b+c=-19\\16a-4b+c=-12\end{cases}

(in other words, plug in each given point's coordinates (x,y) into the equation y=ax^2+bx+c)

Now,

(a-b+c)-(9a+3b+c)=9-(-19)\implies-8a-4b=28\implies2a+b=-7

(a-b+c)-(16a-4b+c)=9-(-12)\implies-15a+3b=21\implies5a-b=-7

and

(2a+b)+(5a-b)=(-7)+(-7)\implies7a=-14\imples a=-2

2(-2)+b=-7\implies b=-3

(-2)-(-3)+c=9\implies c=8

So the equation of the parabola is

y=-2x^2-3x+8

4 0
3 years ago
Help me please i need help
Mademuasel [1]

Um question there is no question so I cannot answer,,,

5 0
3 years ago
Read 2 more answers
I need help with this onehelp me please I have to show work too
adoni [48]
Correct, because $.6 per ounce works for all of the number of ounces. Times 0.6 for all of the number of ounces on the left side (5,10,15,20) to find the result (cost of detergent)

y=.6x
8 0
4 years ago
Carry out the following operations, and express the answer with the appropriate number of significant figures:
inn [45]
I don't understand your question
6 0
4 years ago
16. (a) Find the Highest Common Factor (HCF) of 30 and 42.
Dahasolnce [82]

Answer: 6

Step-by-step explanation: By checking the factors of both numbers, you see that 6 is their greatest common factor.

30: 1, 2, 3, 5, 6, 10, 15, 30

42: 1, 2, 3, 6, 7, 14, 21, 42

Hope this helps!

6 0
4 years ago
Read 2 more answers
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