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3 years ago

5

I'm doing a survey and need thoughts. In a classroom do you prefer to use computers or Textbooks. No explanation necessary. But

feel free if so.

2 answers:

Andrew [12]3 years ago

7 0

IT IS BETTER TO USE A COMPUTER BECAUSE IN TEXTBOOKS U DONT GET MUCH INFORMATION AS YOU DO IN A COMPUTER

svetlana [45]3 years ago

3 0

I prefer to use textbooks because they are reliable and never malfunction.

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A quadratic function is given. f(x) = 1 + x − 7 x2 (a) Use a graphing device to find the maximum or minimum value of the quadrat

Virty [35]

Answer:

a) $P (x,y) \approx (0.1,1.05)$ , b) $P(x,y) = (0.07,1.04)$ .

Step-by-step explanation:

a) The graphic is enclosed to the problem. By visual inspection, an absolute maximum is found.

$P (x,y) \approx (0.1,1.05)$

b) The exact method consists in the application of the First and Second Derivative Tests. First and second derivatives are, respectively:

$f'(x) = 1 - 14\cdot x$

$f''(x) = -14$

The First Derivative Test consists in equalizing the first derivative to zero and solving the expression:

$1 - 14\cdot x = 0$

$x = 0.07$

According to the second derivative, the critical point leads to a maximum. The remaining component is determined by evaluation the polynomial:

$y = 1 +0.07-7\cdot (0.07)^{2}$

$y = 1.04$

The exact solution is $P(x,y) = (0.07,1.04)$ , indicating that graphic solution leads to a good approximation.

6 0

4 years ago

Deep's property tax is $690.65 and is due April 15. He does not pay until July 6. The county adds a penalty of 7.3% simple int

bazaltina [42]

$\bf \qquad \textit{Simple Interest Earned}\\\\
I = Prt\qquad 
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\to& \$690.65\\
r=rate\to 7.3\%\to \frac{7.3}{100}\to &0.073\\
t=years\to &\frac{15+31+30+6}{365}
\end{cases}$

the penalty he'll incurred into, since July 6 is after the deadline of April 15, is I = Prt

now "t" is in years, how many days after April 15 to July 6? well, 15 + 31 + 30 +6, to convert to years, divide by 365

3 0

3 years ago

A rabbit and a turtle were to start a race at the same place. The rabbit was asleep when the turtle started. He slept for seven

Ierofanga [76]

Rabbit: y=5x-7
Turtle: y=x

use substitution

x=5x-7
-4x=-7
x=7/4=1.75

1.75hr

3 0

3 years ago

The ratio of the length to the width of a map is 5 to 2. The map is exactly 15 inches in length. What is the width of the map

allochka39001 [22]

The answer to your question is 6 inches.

3 0

3 years ago

Read 2 more answers

Can a positive and negative number be equivalent<br> and plz explain you know it

Sunny_sXe [5.5K]

Answer:

Yes! See explanation below!

Step-by-step explanation:

If a positive and negative number is equivalent, then they are called additive opposites meaning they add up to 0, basically cancelling out.

Ex:

$1+-1=0\\1000000+-1000000=0\\\frac{1234}{1234}+-\frac{1234}{1234}=0$

4 0

3 years ago