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Cube root of 27 is 3  (because 3 x 3 x 3 = 27).

Cube root of 64 is 4  (because 4 x 4 x 4 = 64).

-3/4

|x| - 6  =  3

Add 6 to both sides:

|x|  =  9

There are two answers:  x  =  9    or    x  =  -9

One way:

Add all the gains:  +7 + 2 + 16 + 8  =  +33

Add all the losses:  -5 + -12 + -8  =  -25

33 - 25  =  8

 A ratio is a part of something like 2/6 of the cars are white.

dont know why its like that.

Remember.....

Distance / Time = Rate    .........so......

1233 miles / 36 hours = 34.25 mph

with what

Without the extra s in the denominator the mass is given by the uglier expression:

More explanation of the process is given in the answer at the link given above by Melody.

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Nine zeros from the numerator are cancelled by the nine zeros in the denominator.

To change a decimal into a percentage, multiply by 100:  0.7 x 100  =  70%.

If the (1+s)³ term is in the numerator, the density would rapidly increase as s increased and the total mass would be infinite (unless a maximum limit for the size of s were supplied), so I assumed it was in the denominator.

The volume, dV, of a "thin" spherical shell, of thickness, ds, is given by the surface area of a sphere of radius s, namely 4.pi.s², multiplied by the small thickness ds.  So dV = 4.pi.s².ds.  The mass per unit volume within this thin shell is 1/(s.(1+s)³), so the mass within this shell is [4.pi.s²/(s.(1+s)³)].ds.  The total mass of the galaxy is obtained by "summing" all these shell masses from zero to infinity.  In other words, we let the shell thickness tend to zero and integrate from zero to infinity.

Does that help?

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You mean solve for x?

What do you want to do with the numbers?  Add them, average them, multiply them?

Use the 3√x

Hit that key, enter the number that you want the square root of, and then hit the equal sign.

If the problem is:                   -6  =  5 - m

Subtract 5 from both sides:  -11 = -m

Multiply both sides by -1:        11  =  m

11 is the correct answer to that equation.

The force exerted by the block on the ground is F1*sin(35) + m*g  or  45*sin(35°) + 5*9.8 N.

From Newton's 3rd law of motion (action and reaction are equal and opposite) this is the normal force exerted on the block.

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If you mean, to enter common fractions, I don't think so.

Divide the part (50,000) by the whole (155,000) and multiply the answer by 100:

50 000 / 155 000 x 100  = 32.3% (approximately)

z - (-27)  =  58

Since - (-27)  =  + 27

We now have:

z + 27  =  58

Subtract 27 from both sides:

z  =  31.

Dividing by zero is undefined. Dividing a non-zero number (like 22) by 0 will not give you a real-number answer.

13  11  =  143

Use the x^y key as   3x^y5 to mean 3 to the fifth = 243.

What are our choices?

And, do you mean -59, or -5.9?

What is the question?

You have two equations:

Equation #1:  x(t) = v0·cos(θ)     gives the x-value, which is a horizontal value

Equation #2:  y(t) =v0·sin(θ) - 16t²  gives the y-value, which is a vertical value

Question 1)  says that the height is 4.7; this is a y-value, specifically y(1).

     It also gives you the time, t = 1, and gives you the initial velocity, v0 = 25.  

     You now have the equation:  y(1)  =  4.7  =  25sin(θ) - 16(1)²  

Question 2)  Solve the equation from question 1, for θ.

Question 3)  You are again looking for height:  use y(t) =v0·sin(θ) - 16t²; entering, .5 for t, 25 for v0, and your answer for question 2 for θ. Solve for y(.5).

Question 4)  I'm assuming, possibly incorrectly, that they want the x-value after 1 second. Use the first equation, substituting the values for v0 and θ.

Question 5)  Redo question 2, but using 5.2 for y(t), 1 for t, and 28 for v0.

Question 6) Redo question 3, but using 28 for vo, .5 for t, and you answer for question 5 for θ.

Question 7)  Redo question 4, for the numbers for Jon.

Question 8) Redo question 3 using the new number.

If you need more help, repost where your questions are.