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3 years ago

How do you find f(2x) when you know f(x) = x^3?

Mathematics

1 answer:

babymother [125]3 years ago

6 0

To find the answer, you just plug 2x in place of x (even though 2x already has an x). It would look something like this: f(2x)= (2x)^3 = 2x*2x*2x= 8x^3

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10 +(-96) + (-14) +8=

Ne4ueva [31]

Answer:

100

Step-by-step explanation:

4 0

3 years ago

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What is the exact value of sin(-345°) in fraction form?

Damm [24]

You draw the reference angle of 45° but clockwise. The exact value of sin(-345°) is 1/√2.

5 0

3 years ago

Please help thank you !

Vikentia [17]

Answer:

x ≈ 14.57

Step-by-step explanation:

using the sine ratio in the right triangle

sin59° = $\frac{opposite}{hypotenuse}$ = $\frac{x}{17}$ ( multiply both sides by 17 )

17 × sin59° = x , then

x ≈ 14.57 ( to 2 dec. places )

8 0

2 years ago

The first 4 terms of a geometric sequence are 2, 6, 18, 54. Part A: Find the common ratio. Remember the common ratio is the numb

ra1l [238]

Answer:

Common ratio is 3

The three terms are 162, 486, 1458

Step-by-step explanation:

Given: The first 4 terms of a sequence are $2,6,18,54$

To find:

A. the common ratio

B. the next 3 values in the geometric sequence

Solution:

Geometric sequence is a sequence in which each of the terms is obtained by multiplying the previous term by a fixed number.

$\frac{6}{2}=3\\\\\frac{18}{6}=3\\\\\frac{54}{18}=3$

So, the common ratio is $3$

The next three values are as follows:

$54(3)=162\\162(3)=486\\486(3)=1458$

8 0

3 years ago

What error did zacharias make?

qwelly [4]

The equation 0 = -2x2 5x - 3 was the quadratic formula that Zacharias used. However, he started substituting as:
Quadratic formula as x = ; substitution as x

The errors he made: he mistakenly used the negative (-) and postive (+)
* -5 should have been 5
* 52 should have been -52
* both the numerator and the denominator should have been -2 instead of 2

7 0

3 years ago

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