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kondor19780726 [428]
3 years ago
13

Also can u help on all these

Mathematics
1 answer:
dsp733 years ago
7 0
I know that the first one is c and the second one is c
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Find the length of the following curve. If you have a​ grapher, you may want to graph the curve to see what it looks like.
stepladder [879]

The length of the curve y = \frac{1}{27}(9x^2 + 6)^\frac 32 from x = 3 to x = 6 is 192 units

<h3>How to determine the length of the curve?</h3>

The curve is given as:

y = \frac{1}{27}(9x^2 + 6)^\frac 32 from x = 3 to x = 6

Start by differentiating the curve function

y' = \frac 32 * \frac{1}{27}(9x^2 + 6)^\frac 12 * 18x

Evaluate

y' = x(9x^2 + 6)^\frac 12

The length of the curve is calculated using:

L =\int\limits^a_b {\sqrt{1 + y'^2}} \, dx

This gives

L =\int\limits^6_3 {\sqrt{1 + [x(9x^2 + 6)^\frac 12]^2}\ dx

Expand

L =\int\limits^6_3 {\sqrt{1 + x^2(9x^2 + 6)}\ dx

This gives

L =\int\limits^6_3 {\sqrt{9x^4 + 6x^2 + 1}\ dx

Express as a perfect square

L =\int\limits^6_3 {\sqrt{(3x^2 + 1)^2}\ dx

Evaluate the exponent

L =\int\limits^6_3 {3x^2 + 1} \ dx

Differentiate

L = x^3 + x|\limits^6_3

Expand

L = (6³ + 6) - (3³ + 3)

Evaluate

L = 192

Hence, the length of the curve is 192 units

Read more about curve lengths at:

brainly.com/question/14015568

#SPJ1

7 0
2 years ago
In the figures, area of triangle ABE is 25 cm2
stira [4]

Answer:

sorry where is figure.

Step-by-step explanation:

area of triangle ABE=area of triangle BE3

4 0
3 years ago
If the revenue for the week is 2000 and labor costs consists of two workers earning 8 per hour who work 40 hours each what is la
Valentin [98]
2 * (40 * 8) = 640

\frac{640}{2000} *100=32 percent
7 0
3 years ago
Use the graph to estimate the value of y when x = 2.5
Vera_Pavlovna [14]

Answer:

f

Step-by-step explanation:

3 0
3 years ago
PLS HELP ME AND SHOW WORK.
mario62 [17]

Answer:

(x-2)^{2} +(y+6)^{2} =49

Step-by-step explanation:

equation of circle =

(x-h) ^{2} + ( y-k)^{2} = r^{2}

( h , k ) = center of origin

r^{2} = radius

origin = ( 2 , -6 )

radius = 7

(x-2)^2+(y+6)^2=49

3 0
3 years ago
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