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aliina [53]
4 years ago
6

What is the formula to calculate the area of a circle on 1

Mathematics
1 answer:
kupik [55]4 years ago
5 0
A=(pie) squared times 1/2
I think this is correct but I’m not sure
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Find f if f ''(x) = 12x2 + 6x − 4, f(0) = 5, and f(1) = 4.
Taya2010 [7]
This is a differential equations problem.  We are to work backwards and determine the function f(x) when given f "(x) and initial values.

<span>f ''(x) = 12x^2 + 6x − 4, when integrated with respect to x, yields:

                x^3        x^2
f '(x) = 12------ + 6----- - 4x + C, or 4x^3 + 3x^2 - 4x + C, and
                  3            2

             x^4         x^3        x^2
f(x) = 4------- + 3------- - 4------ + Cx + D, or f(x)=x^4 + x^3 - 2x^2 + Cx + D
               4              3         2

Now, because f(0)=5, 5=0^4 + 0^3 -2(0)^2 + C(0) + D, so that D=5.
Determine D in the same manner:  Let x=1 and find the value of C.

Then the solution, f(x), is x^4 + x^3 - 2x^2 + Cx + 5.  Replace C with this value and then you'll have the desired function f(x).</span>
6 0
4 years ago
You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a simple random sample of 3
Tpy6a [65]

Answer: 99% confidence interval would be (1346.37,1553.63)

Step-by-step explanation:

Since we have given that

Sample size = 30

Sample mean = $1450

Standard deviation = $220

We need to find the 99% confidence interval.

So, z = 2.58

So, confidence interval would be

\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1450\pm 2.58\times \dfrac{220}{\sqrt{30}}\\\\=1450\pm 103.63\\\\=(1450-103.63,1450+103.63)\\\\=(1346.37,1553.63)

Hence, 99% confidence interval would be (1346.37,1553.63)

4 0
4 years ago
Roger gets $40 per day as wages and $4.50 as commission for every pair of shoes he sells in a day. His daily earnings goal is $1
Bingel [31]

Answer:

40 + 4.50x =112

4.5x = 72

x =16

Step-by-step explanation:

pls mark me as brainlest

5 0
3 years ago
Read 2 more answers
To the nearest hundredth, what is the value of m?
Aleksandr-060686 [28]

Answer:

MEH

Step-by-step explanation:

THE DEMON WILL BE UN AMERICAN IN ORDER FOR A ICE BALL AND THE OTHER IS A SIMP OF A BAT OR SOMETHING THAT IS NOT A GOOD SHOE OR SOMETHING LIKE THIS ONE THAT HAS BEEN TRYING FOR THE PAST THREE YEARS OF THE HW ERA AND THE ONLY ONE I HAVE SOMETHING THAT IS NOT THAT MUCH YOUR JUST BROKE

7 0
4 years ago
Bob bought 3 packs of model cars he gave 4 cars to ann Bob has 11 cars left how many model cars were in each pack
Harrizon [31]
First add 11 and 4 because you need to know how many he had in total 11+4=15 then divide 15 by 3 and then you have you answer 15/3=5.
There are 5 model cars in each pack.
5 0
3 years ago
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