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lisabon 2012 [21]
3 years ago
15

Enter the fraction as a decimal and as a percent.

Mathematics
1 answer:
Fofino [41]3 years ago
8 0
.625
62.5%
to find decimal divide top # by bottom # and them move decimal 2 places to the right
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Find the length of the curve. R(t) = 7t, 3 cos(t), 3 sin(t) , −2 ≤ t ≤ 2
Leviafan [203]

we are given

r(t)=(7t,3cos(t),3sin(t))

we can find x , y and z

x=7t,y=3cos(t),z=3sin(t))

now, we can use arc length formula

L=\int\limits^a_b {\sqrt{(x')^2+(y')^2+(z')^2} } \, dt

now, we can find derivative

x'=7,y'=-3sin(t),z'=3cos(t))

now, we can plug values

and we get

L=\int _{-2}^2\sqrt{7^2+\left(-3\sin \left(t\right)\right)^2+\left(3\cos \left(t\right)\right)^2}dt

L=\int _{-2}^2\sqrt{7^2+9}dt

=\sqrt{58}\cdot \:2-\left(-2\sqrt{58}\right)

L=4\sqrt{58}...........Answer


8 0
3 years ago
Trình bày khái niệm và cách giải phương trình bậc nhất 1 ẩn, hệ phương trình bậc nhất 2 ẩn
AysviL [449]
English please.......,.
8 0
3 years ago
4x + 2y =10<br><br> 4x -2y = -10<br> perpednicular or paralell
Alina [70]

Answer:

the answer is perpendicular I think :)

6 0
3 years ago
What is the slope of this table?
Vsevolod [243]

Answer:

slope 3

Step-by-step explanation:

-2+y=4

4+y=10

10+y=16

y= 6

0+x=2

2+x=4

4+x=6

x=2

slope= change in y/ change in x

6/2=3

4 0
3 years ago
Zoe Paid $18.60 in sales tax and tips for her dinner the sales tax rate is 11% and she tipped 20%
barxatty [35]

Answer:

The cost of the dinner before other costs is $14.20

Step-by-step explanation:

To solve this, we write the following equation:

x + .11x + .20x = 18.60

This is because in addition to paying for the dinner (x), she also has to pay 11% of it and another 20% of it. Now we can combine like terms and solve.

1.31x = 18.60

x = 14.20

4 0
3 years ago
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