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Reika [66]
3 years ago
12

Evaluate the function at the given value of the independent variable. Simplify the results. (If an answer is undefined, enter UN

DEFINED.) f(x) = x3 − 49 x f(x) − f(7) x − 7 =
Mathematics
1 answer:
Eduardwww [97]3 years ago
5 0

Answer: Undefined maybe

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Item 1<br> Find the dimensions of the square.<br><br> Area = 441 cm²
mafiozo [28]

Answer:

21 cm by 21 cm

Step-by-step explanation:

The formula for the area of a square is A = x^2, where x is the length of any one side of the square.  Here,

441 cm² = x²

This actually has two roots:  {√441, -√441), but since x must be positive here, to be a dimension of the square, we choose +√441, or +21.

The dimensions of the square are 21 cm by 21 cm.

3 0
3 years ago
Find the value(s) of x where the tangent to the graph of y=e^5x is parallel to the
Alik [6]

Answer:

There are none.

Step-by-step explanation:

<u>No calculus involved:</u>

The line, in slope-intercept form, has equation y=-10x+17, ie is always decreasing (easy to spot applying the definition)

Meanwhile, y=e^{5x} is always increasing over its domain.

At no point the tangent will be decreasing.

<u>Let's use calculus</u>

We are to solve the equation y'(x) = -10 \rightarrow 5e^{5x} = -10 \rightarrow e^{5x}=-2 which has no real solutions.

8 0
3 years ago
What is 7 to the 10 power
Over [174]
7 to the 10 power would be 70
5 0
3 years ago
Read 2 more answers
Mona is skating at a speed of 300 feet per minute. Lina is 1000 feet behind her. What should be her speed if she wants to catch
Allisa [31]
If we translate the facts into location equations, xM=Mona's location, xL=Lina's location, then we get:

xM(t) = 300t
xL(t) = v*t - 1000
xM(10)=xL(10)

Where v is Lina's speed we have to find.

Plugging them all together gives:

300*10 = 10v - 1000 

Which can be solved:

3000 + 1000 = 10v
4000 = 10v
v=400

Lina should skate at 400 feet per minute!
4 0
3 years ago
Find the value of x<br><br> If 100x =265.0
kakasveta [241]
To solve:

1) Divide both sides by 100

100x/100 = 265/100

x = 2.65
8 0
4 years ago
Read 2 more answers
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