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3 years ago

7

F(x) = 2x2 + 4x - 1. Find f(3).

2 answers:

LenKa [72]3 years ago

7 0

Answer:

f(3)=15

Step-by-step explanation:

plug 3 in for x

f(3)=(4)+(12)-1=

16-1=

15

shutvik [7]3 years ago

4 0

F (x)= 2x2+4x-1 = 23

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Answer:$5.00

Step-by-step explanation: ADDD

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3 years ago

Parth created a Box-and-Whisker Plot to show the average weight of the fish he caught over the weekend. What information from th

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The 1st Quartile that the Box-and-Whisker Plot shows tells us that: <em>A. Three fourths of the fish he caught were larger than 22 pounds.</em>

Recall:

In a Box-and-Whisker Plot, about 25% of the data will be below the first quartile while 75% will be above the first quartile, that is Three fourths of the data will be above the first quartile and one-fourths will be below the first quartile.

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3 years ago

What transformations are needed to change the parent cosine function to y=3cos(10(x-pi))?

LUCKY_DIMON [66]

Answer:

The graph of $y=cos(x)$ is:

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Step-by-step explanation:

If the function $y=cf(h(x+b))$ represents the transformations made to the graph of $y= f(x)$ then, by definition:

If $0$ then the graph is compressed vertically by a factor c.

If $|c| > 1$ then the graph is stretched vertically by a factor c

If $c$ then the graph is reflected on the x axis.

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If $0$ the graph is stretched horizontally by a factor $\frac{1}{h}$

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$y=3f(10(x-\pi))$

Then $c =3>1$ and $b =-\pi < 0$ and $h=10 > 1$

Therefore the graph of $y=cos(x)$ is:

Stretched vertically by a factor of 3.

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3 years ago

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3 years ago

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elixir [45]

Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS
Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

<u /> $\frac{4.5}{y} =\frac{12.5}{4}$ <u />

<u />

<u>Step 2: Solve for </u><em><u>y</u></em>

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Multiply: $18 = 12.5y$
Isolate <em>y</em>: $1.44 = y$
Rewrite: $y=1.44$

<u>Step 3: Check</u>

<em>Plug in y to verify it's a solution.</em>

Substitute: $\frac{4.5}{1.44} =\frac{12.5}{4}$
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3 years ago

Read 2 more answers