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enot [183]
3 years ago
8

If y = 2x2 - 3x - 10, then x = 0 is a counterexample for which conjecture?

Mathematics
1 answer:
timama [110]3 years ago
6 0
Here's all I can think of:

f(0) = -10.  This is the y-intercept of this parabolic graph.  This point is (0,-10).

If you were to find the inverse of f(x), then (-10,0) would be on the graph.
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4 years ago
A store prices tapes by raising the wholesale price 50% and adding 25 cents .What must a tape's wholesale price be if the tape s
Andre45 [30]

Let's call the store value as s and the wholesale price as w. A store prices tapes by raising the wholesale price 50%(0.5 in decimals) and adding 25 cents, writing this as an equation, we have

s(w)=w+0.5w+0.25

If we invert the equation we're going to find the the wholesale price as a function of the store price.

\begin{gathered} s=w+0.5w+0.25 \\ s=1.5w+0.25 \\ s-0.25=1.5w \\ w(s)=\frac{s-0.25}{1.5} \end{gathered}

Now, to find the wholesale price if the sales price is $1.99, we just need to evaluate s = 1.99 on the function we created.

w(1.99)=\frac{1.99-0.25}{1.5}=1.16

The wholesale price is $1.16.

5 0
1 year ago
A spider ate 25\%25%25, percent more bugs this month than last month. The spider ate 8 bugs last month. How many bugs did the sp
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3 years ago
jada goes to get her hair done the cost for a haircut and blowout is 65.42 she leaves a 25% tip for the stylist what is the tota
Art [367]

Answer:

The total cost is $81.78

Step-by-step explanation:

First lets calculate the tip

tip = cost * percent of tip

tip = 65.42*.25

tip = 16.355

Which rounds to 16.36  since we are working with money and round to the nearest cent

total cost = cost of cut and blowout + tip

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4 0
3 years ago
Read 2 more answers
What is the rate of change?
eduard

Answer:

12

Step-by-step explanation:

12 +30= 42

42+12=54

4 0
3 years ago
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