A general rule for rounding since you didn't say to what place: if the number next to it is below 5, don't do anything. If it's over/ is 5, add one to the number.
2 x [6.022 x 10^23] =1.2044 x 10^24 molecules in 2 moles.
I am being told to use 5000e^(0.06*4) for the continuous interest... But how does 'e' get use?
5,000 x e^0.24 =
5,000 x 1.27124915 =
=$6,356.25
100/5=20
20 cents each.
2tan θ / [1+ tan^2 θ] = sin2θ
[2 sinθ/cosθ] / [ sec^2 θ ] = sin 2θ
[2 sinθ/cosθ] / [1 /cos^2 θ ] = sin 2θ
[2 sinθ/cosθ] * cos^2 θ = sin 2θ
2sinθcosθ = sin2θ
e is just a constant, I don't know it by heart but it's a button on your calculator.
Hint, use natural log to cancel out the damned thing.
Here are the associated values for each time : https://www.wolframalpha.com/input/?i=v(t)++%3D+10(1+-+e%5E(-0.2t)+)+++for+t++%3D+0,+5,10,15,20,25,30,35,40,45,+50
t will be in one column ....... and these values - v(t) - will be in the other
Sorry, missed a one, its -16!
-7+5= -2
-2 times 8 = ...
6!
Have a nice day!
So 6-3 is with a negative exponent.
To rewrite with a postive exponent, change -3 to 3, so it shows: 63.
Thank you very much CPhil, always a life saver. I always tend to forget that identity >.<
5x - 6 = 3x + 10 add 6 to both sides, subtract 3x from both sides
2x = 16 divide both sides by 2
x = 8
2 / 20 = 1/10 = 0.1
sin (4x) and cos (2x ) = C
sin (4x) = 2sin(2x)cos(2x)
If cos (2x) = C, then sin(2x) = √ [1 - [cos(2x)]^2 ] = √ [1 - C^2]
So
sin(4x) = 2 * √ [1 - C^2] * C
Josee wanted to measure the depth of the sink hole that opened on Amelia Avenue this morning. She measured the angle of depression to the lowest point to be 35°. She also measured the distance across the sinkhole to be 38 feet. Assuming the deepest point to be in the exact middle of the sinkhole, how deep is the sinkhole?
Since the deepest part is in the middle.....this is 19 ft from one edge of the sinkhole
We can use the tangent for this....
tan (35°) = d / 19 where d is the depth of the sinkhole.......rearrange as....
19 * tan (35°) = d ≈ 13.3 ft
18 = 18/1
Reciprocal of 18/1 = 1/18
1.
Any number over or divided by itself is 1:
1234567890/1234567890 = 1
Yes
Do sqrt(-1):
sqrt(-1) = i
i = Imaginary Number
120/6.97 = 17.2166427546628407
Sin(55) = x / 98 multiply both sides by 98
98 * sin (55) = x ≈ 80.277 [assuming that we're in degrees ]
1/3y - 18 = 2 multiply through by 3 to clear the fraction
y - 54 = 6 add 54 to each side
y = 60
-2v+9 = 25 subtract 9 from both sides
-2v = 16 divide both sides by -2
v = -8
3\3 is 1
Marecelo had 49.13 dollars in his bank account he paid 2 fees of 32.50 then he mad to deposit of 74.25 each. What is the balance in dollars in marceloes account
I'm assuming that the two fees were $32.50 each....so we have....
49.13 - 2(32.50) + 2(74.25) = $132.63 = balance
I will dont worry my son
