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Leya [2.2K]
3 years ago
14

38.7÷1.29 help I'm stuck

Mathematics
2 answers:
kifflom [539]3 years ago
8 0

The answer is 30. Hope this helps!

Darya [45]3 years ago
5 0

1.29 can go into 38.7 30 times, Your answer is 30.

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Ivenika [448]
Pls give the question to expect that u get answers from others



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6 0
3 years ago
How do you solve the equation 2cos^2 - cosx = 0 for all solutions?
exis [7]

Answer:

<em>π/2 and π/3</em>

Step-by-step explanation:

Given the equation 2cos²x - cosx = 0, to find the solution to the equation, we will follow the following step.

let P = cosx

The equation becomes 2P²-P = 0

P(2P-1) = 0

P = 0 and 2P-1 = 0

P= 0 and P = 1/2

Since P = cosx

cosx = 0 and cos(x) =  1/2

If cos(x) = 0

x = cos⁻¹0

x = 90⁰

x = π/2

If cos(x) = 1/2

x = cos⁻¹1/2

x = 60⁰

x = π/3

<em>Hence the solutions to the equation are π/2 and π/3.</em>

7 0
3 years ago
This picture is asking the question! Please help!
babunello [35]
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3 0
3 years ago
Find the equation of the line that passes through the points (-2, 3) and (1, -6). Write your answer in Standard Form.
dlinn [17]
Slope = (-6 - 3)/(1+2) = -9/3=-3
y - 3 = -3(x +2)
y - 3 = -3x - 6
3x + y = -3
answer is 3x + y = -3 (third one)
7 0
3 years ago
8. Solve the system using substitution. Show all work. (3 points)
Minchanka [31]
Ok. first you have to pick x or y or whatever variable you have and the number multiplied with it has to be the same in each equation but one has to be positive and one negative.
lets pick x

y=-2x+6
3y=x-3/ *2

so the x are positive and negative we have to multiply the equation with 2

y=-2x+6
6y=2x-6

now you have to add the equations. you do that by adding each side of the equatins together like this:

y+6y=-2x+6+2x-6 the x will cancel out

7y=0
y=0

now just go back to one of the previous equations and put the y in it.

0=-2x+6
2x=6
x=3

here you go
3 0
3 years ago
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