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Iteru [2.4K]
3 years ago
8

(Q1) Which is the graph of the catenary y=e^x+e^-x/2

Mathematics
1 answer:
Alexus [3.1K]3 years ago
7 0

Answer:

  a.

Step-by-step explanation:

A catenary looks a lot like a parabola. Only graph "a" has that appearance.

___

A graphing calculator can help you choose, or you can recognize the nature of the terms of the sum.

e^x looks like graph D; e^-x looks like graph B. Their sum will always be positive, so cannot create graph C. At x=0, the average of the two graphs B and D will be 1, corresponding to the minimum of graph A.

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An employee earns $195 for 15 hours of work. Assuming he is paid by the hour, how much will the employee earn in 8 hours?
vampirchik [111]

Answer:

$104

Step-by-step explanation:

  1. First, find the employee’s hourly rate.  You can do this by dividing the total amount earned by the total hours worked. \frac{195}{15}=13
  2. Now that you know that the employee’s hourly rate is $13 per hour, you can multiply the hourly rate by the number of hours. 13*8=104
7 0
3 years ago
Which of the following sets of values correctly completes the t-chart for the equation y = 2x2 - 1.
natali 33 [55]

Answer:

The sets of values that correctly completes the t-chart are:

7, -1, 7

Hence, option B is true.

Step-by-step explanation:

Given the equation

y = 2x² - 1

FOR x = -2

substitute x = -2 in the equation

y = 2x² - 1

y = 2(-2)² - 1

y = 8 - 1

y = 7

FOR x = 0

substitute x = 0 in the equation

y = 2x² - 1

y = 2(0)² - 1

y = -1

FOR x = 2

substitute x = 2 in the equation

y = 2x² - 1

y = 2(2)² - 1

y = 8 - 1

y = 7

Thus, the t-chart becomes:

x              y

-2            7

0             -1

2              7

Thus, the sets of values that correctly completes the t-chart are:

7, -1, 7

Hence, option B is true.

7 0
3 years ago
The animal shelter only has dogs and cats. If they currently have 12 cats and 27 animals, what is the ratio of cats to dogs, in
Andru [333]

Answer:

12/15

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What's the communitive property
Naddik [55]
Communitive property is the property that allows you to move the numbers around in addition and multiplication.
 
For example:
(addition) 1 + 2 = 2 + 1
(multiplication) 3 x 4 = 4 x 3

This property cannot be used in division or subtraction
7 0
3 years ago
Will mark brainliest :)
jek_recluse [69]

Answer:

D

Step-by-step explanation:

The equation of the parabola is of the form

y = ax² + c ( where c is the y- intercept )

Here c < 0

Since the parabola has a maximum value and opens down then a < 0

Thus the only equation that could represent this parabola is

y = - x² - 3 → D

3 0
3 years ago
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