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Karolina [17]
3 years ago
13

Please dont write random things for points, you will be reported.

Mathematics
1 answer:
elixir [45]3 years ago
5 0

Answer:

1) 40.7

3) 42.84

Step-by-step explanation:

Not sure about 2

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Please Help me! Marvin worked for 3 days. He earned $87.20 each day. He uses his earnings to buy four chairs. If he has no money
Molodets [167]

Answer:

21.8

Step-by-step explanation:

87.2 divided by 4

5 0
2 years ago
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What is 4,7,12,19,28 in quadratic form
Naddik [55]
Asked and answered elsewhere.
brainly.com/question/9247314

You obviously don't mind using "technology" (Brainly) to answer these questions. A graphing calculator can do quadratic regression on the sequence and tell you its formula.

If you want to do it by hand, you can write the equation
.. y = ax^2 +bx +c
and substitute three of the given points. Then solve the resulting three linear equations for a, b, and c.
.. 4 = a +b +c
.. 7 = 4a +2b +c
.. 12 = 9a +3b +c

Subtracting the first equation from the other two reduces this to
.. 3 = 3a +b
.. 8 = 8a +2b
The latter can be divided by 2, so reduces to
.. 4 = 4a +b
Subtracting the first of the reduced equations from this, you have
.. 1 = a
so
.. 3 = 3*1 +b
.. 0 = b
and
.. 4 = a + b + c = 1 + 0 + c
.. 3 = c

And your equation is
.. y = x^2 +3 . . . . . . as shown previously

7 0
3 years ago
Ron bought 6 tickets to a concert by the orchestra in his town. If he gave the cashier $75 and received $3 in change, how much d
Harman [31]
75-3= 72
72/6= 12
Each ticket costs $12.00
8 0
3 years ago
Read 2 more answers
Anna wants to take fitness classes. She compares two gyms to determine which would be the best deal for her. Fit Fast charges a
mestny [16]
Fit Fast: a set feet per class => y = Ax

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You can discard the second and the fourth systems because  they do not have the form established from the statement.

The first system produce an obvious result given that is represents an option that is always better than the other 5.5x will be lower than 7.5x + 10 for any positive value of x, and so there is no need to make any comparission.

The third system is

y = 7.5x and y = 5.5x + 10 which need to be solved to determine when one rate is more convenient than the other.

Answer: y = 7.5x and y = 5..5x + 10



4 0
3 years ago
Read 2 more answers
Select the correct answer.What is the zero of the function represents by this graph?SHORT QUICK ANSWERS ONLY NOT A TEST
Pepsi [2]

Given

Answer

The graph touches the x-axis at -6

Hence x = -6 is the zero of the graph.

6 0
11 months ago
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