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makvit [3.9K]
3 years ago
15

Trevor spent $27 and now has no money left. What did he have before his purchase

Mathematics
1 answer:
Sav [38]3 years ago
8 0

Answer:$27

Step-by-step explanation:

x-27=0

0+27=27

27-27=0

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between 1995 and 2006, the population of samburg, usa(in thousands) can be modeled by f(x) = 0.35x(squared) - 2.1x+15.8 where x=
Juli2301 [7.4K]
\bf f(x)=0.35x^2-2.1x+15.8\qquad 
\begin{cases}
x=\textit{year since 1995}\\
f(x)=\textit{population amount}
\end{cases}

the equation is a quadratic one, and it has a positive coefficient on the leading term, meaning, is opening upwards, so it has a "burrow" for the vertex.

the minimum or lowest point for a quadratic opening upwards is, well, the vertex point :),   the "x" value is the year, the "y" or f(x) value is the population, we're asked for the year, or the x-coordinate of the vertex

well   \bf \begin{array}{llll}
f(x)=&0.35x^2&-2.1x&+15.8\\
&\quad \uparrow &\quad \uparrow&\uparrow \\
&\quad  a&\quad  b &c
\end{array}
\\\\

\\\\
\qquad  \textit{vertex of a parabola}\\ \quad \\
\qquad 

\left(\boxed{-\cfrac{{{ b}}}{2{{ a}}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
5 0
3 years ago
(PLS HURRY ASAP 100 POINTS)
Sophie [7]

Answer:

  • D) 0.3125

====================

Total number of outcomes is 16, count of all outcomes.

Number of outcomes with 3 or more tiles is 5:

  • HTTT, THTT, TTHT, TTTH, TTTT

The probability is:

  • P = favorable outcomes / total outcomes
  • P(at least 3 tails) = 5/16 = 0.3125

Correct choice is D.

6 0
2 years ago
12x -3 divided by -5
Vesna [10]

Answer: 1.8x

Step-by-step explanation:

4 0
4 years ago
HELP ASAP plz I’ll give brainliest and plz explain:)
yaroslaw [1]

Answer: No, Store A is charging $2.20 per rose while Store B is charging 2.166667 dollars per rose.

Step-by-step explanation:

11/5 = 2.2

(To check) 2.2 x 5 also equals $11

However, they are not selling roses at the same rate because if you were to do 2.2x6 it will equal 13.2.

13/6 = 2.166667

4 0
3 years ago
Read 2 more answers
Which statement identifies and explains Limit of f (x) as x approaches 0?
ira [324]

Third option, counting from the top.

Remember that we say that a limit exists, like:

\lim_{x \to 0} f(x) = a

if and only if:

\lim_{x \to 0_-} f(x) = a

and

\lim_{x \to 0_+} f(x) = a

Where the above two limits say that when we approach zero from the negative side (the first one) and from the positive side (the second one), we must get the same value.

Also, remember that the limit is an approximation through near points

Then, regardless the fact that f(0) = -2, we can see that as x approaches 0 from both sides, the value of the function approaches 4.

Thus, we can conclude that the limit of f(x) when x tends to zero is equal to 4.

The correct option is the third one.

If you want to learn more about limits, you can read:

brainly.com/question/23336448

5 0
3 years ago
Read 2 more answers
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