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3 years ago

Evaluate : f(x) = x^2 - 2x + 1 , x = 3

Mathematics

1 answer:

den301095 [7]3 years ago

8 0

Answer:

Step-by-step explanation:

3^2=9

-2 times 3 = -6

9-6+1=4

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The first two terms of an exponential sequence are 18 and 6. What are the next three terms?

sweet [91]

Answer:

The next three terms are 54, 162, 486

Step-by-step explanation:

Exponential sequences you multiply to find the next term

6 x 3 = 18 (to find the next term you can multiply the previous term by 3)

18 x 3 = 54

54 x 3 = 162

162 x 3 = 486

7 0

2 years ago

Three times a number, minus 2, is equal to two times the number, plus 7.

WINSTONCH [101]

Answer:

3x - 2 = 2x + 7

Step-by-step explanation:

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3 years ago

Read 2 more answers

Write each expression as an algebraic (nontrigonometric) expression in u, u > 0.

max2010maxim [7]

Answer:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0$

Step-by-step explanation:

We want to write the trignometric expression:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)\text{ where } u>0$

As an algebraic equation.

First, we can focus on the inner expression. Let θ equal the expression:

$\displaystyle \theta=\sec^{-1}\left(\frac{u}{10}\right)$

Take the secant of both sides:

$\displaystyle \sec(\theta)=\frac{u}{10}$

Since secant is the ratio of the hypotenuse side to the adjacent side, this means that the opposite side is:

$\displaystyle o=\sqrt{u^2-10^2}=\sqrt{u^2-100}$

By substitutition:

$\displaystyle= \sin(2\theta)$

Using an double-angle identity:

$=2\sin(\theta)\cos(\theta)$

We know that the opposite side is √(u² -100), the adjacent side is 10, and the hypotenuse is u. Therefore:

$\displaystyle =2\left(\frac{\sqrt{u^2-100}}{u}\right)\left(\frac{10}{u}\right)$

Simplify. Therefore:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0$

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3 years ago

Giving 40 points who help me

Elena L [17]

Answer:

D is the answer. There are 5 boxes, that each has 3 filled in.

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2 years ago

Gerald recorded the gains and losses for each play on the football field. Gains were marked with a + and losses with a –. Play 1

Vedmedyk [2.9K]

Answer:

Play 3

Step-by-step explanation:

Given:

$\left\begin{array}{ccccc}{Play}&{1}&{2}&{3}&{4}&{Yards}&{+4}&{-6}&{-2}&{+3}\end{array}\right$

Required [Missing from the question]:

Determine the play with the least change in yard?

To do this, we ignore the sign in front of each yard before we analyze.

So, we have:

Play 1 has a change of 4

Play 2 has 6

Play 3 has 2

Play 4 has 3

<em>From the above analysis, play has the least (which is 2)</em>

4 0

3 years ago