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Novay_Z [31]
3 years ago
10

What is the slope of the graph of y = x^2 + 12 -7 at the point x = 4

Mathematics
1 answer:
Doss [256]3 years ago
6 0

Answer:

20

Step-by-step explanation:

Step 1:  find the derivative of y = x^2 + 12x - 7; it is 2x + 12.

This function represents the slope of the tangent line to the given curve at x.

Step 2:  Substitute 4 for x in f '(x) = 2x + 12:  f '(4) = 2(4) + 12 = 20

The slope of the tangent line to the graph of y = x^2 + 12x - 7 at x = 4 is 20.

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F(x) = 3x What is the inverse of the function below?
guajiro [1.7K]

Answer:

f^-1 (x)=x/3

Step-by-step explanation:

y=3x

x=3y

y=x/3

6 0
3 years ago
PLEASE HELP ASAP!!! I don’t know how to do this problem or where to start! How do I solve this?
Leto [7]

Answer:

W = 4.95

Step-by-step explanation:

You want to start by writing down what you know, and forming a system of equations.

L= length W= width

2L+2W=14.7    

L= 2.4

On the left side of the equation, you're adding all your side lengths, and on the right, is the total perimeter. (Also could be written L+L+W+W = 14.7)

You would then substitute L from the bottom equation into the top equation to get:

2(2.4) +2W=14.7

Solving:

4.8+2w=14.7

W= 4.95

To check your answer simply add all the sides together and make sure it equals your perimeter. You can also plug W and L back into the original equation.

7 0
3 years ago
MATHEMATICS: can anybody help or show me how to do this. look at the picture i need help with question 3?
Alekssandra [29.7K]
It wants you to come up with three events. You'll place them on the line right above, where you think they would go.

For example, if your first event was "seeing a unicorn" you would plot it by "impossible." Some things have a fifty fifty chance, or are likely, like you finding a penny. Use any scenario you can think of. How likely is it that it would come true?
5 0
3 years ago
Team tool bella canoed 15 3/4 miles in 5/4 hours. What was their average rate of speed in mph ​
luda_lava [24]

Average speed is 12.6 miles per hour

<em><u>Solution:</u></em>

Given that team tool bella canoed 15\frac{3}{4} miles in \frac{5}{4} hours

To find: average rate of speed in miles per hour

From given information,

distance = 15\frac{3}{4} \text{ miles } = \frac{15 \times 4+3}{4} = \frac{63}{4} \text{ miles}

time = \frac{5}{4} \text{ hours}

To find the speed we use the below formula,

speed = \frac{distance}{time}

Substituting the given values we get,

speed = \frac{\frac{63}{4}}{\frac{5}{4}}\\\\speed = \frac{63}{4} \times \frac{4}{5} = \frac{63}{5} = 12.6

Thus average speed is 12.6 miles per hour

7 0
3 years ago
Please answer! Will mark brainliest. <br><br> -3|5x-2|&gt;4
Mrac [35]

Answer:

Step-by-step explanation:

eact from : x= 2, 6/5

decial from : x= 2, -1.2

mixed number from  :x=  2, - 1 1/5

6 0
3 years ago
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