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3 years ago

On the xy-plane, the graph of function f has x-intercepts at -3, -1, and 1. which of the following could define f?

Mathematics

1 answer:

vekshin13 years ago

7 0

X intercept is when y=0
or f(x) = 0
set the f(x)'s to 0
your answer is C
x-1=0 x+1=0 x+3=0
so x= -3, -1, and 1

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Please can someone solve this

Crazy boy [7]

Answer:

200.86

Step-by-step explanation:

Using the formulas:

A=πr2

C=2πr

Solving for A:

A=C2

4π=50.242

4·π≈200.85812

I hope this helps.

4 0

3 years ago

I need help plzzzz percent equations blank% of $30 =3

Lyrx [107]

Answer:

10%

Step-by-step explanation:

Hello I can help you with this question. Lets start.

The question is asking what percent of $30 is 3

so i think u actually meant $3 right but anyways

30 is 10 times 3

then clearly it would be 10%

gogo that's the answer!

4 0

3 years ago

Find the quotient by factoring the numerator. (x²+3x+2)/(x+2)

user100 [1]

Answer:

x+1

Step-by-step explanation:

5 0

3 years ago

Stock A ‘s returns have a standard deviation of 0.5, and stock B’s returns have standard deviation of 0.6.The correlation coeffi

galben [10]

Answer:

The variance of the profile is 0.2179.

Step-by-step explanation:

We are given the following in the question:

$\sigma_A = 0.5\\\sigma_B = 0.6\\\rho_{A,B} = 0.5\\w_A = 70\% = 0.7\\w_B = 30\% = 0.3$

Variance of portfolio is given by:

$w_A^2\sigma_A^2 +w_B^2\sigma_B^2 + 2w_Aw_BCov_{A,B}$

$Cov_{A,B} = \rho_{A,B} \times \sigma_A \times \sigma_B \\=0.5\times 0.5 \times 0.6\\=0.15$

Putting values, we get,

$w_A^2\sigma_A^2 +w_B^2\sigma_B^2 + 2w_Aw_BCov_{A,B}\\=(0.7)^2(0.5)^2 + (.3)^2(0.6)^2 + 2(0.7)(0.3)(0.15)\\=0.2179$

Thus, the variance of the profile is 0.2179.

4 0

3 years ago

In the set, (1,4), (3,5) and (-1, 2), what is the range?

stealth61 [152]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{2 \: , \: 4 \: , \: 5 \: }}}}}$

Step-by-step explanation:

Given,

{ 1 , 4 } , { 3 , 5 } , { - 1 , 2 }

To find : Range

<u>Range are the set of all y - co-ordinates .</u>

So,

Answer : { 2 , 4 , 5 }

Hope I helped!

Best regards!

4 0

3 years ago