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Ivahew [28]
3 years ago
6

What is the answer cos75 degrees=10/x

Mathematics
1 answer:
vova2212 [387]3 years ago
4 0
To find the answer we simply work out the equation.
cos (75) = 10/x

cos (75) * x = 10. Here, I simply multiplied both sides by x to move x to the left hand side of the equation.

x = 10 / cos (75) Here, I divided cos (75) on both sides to move cos (75) to the right hand side of the equation.

The cosine of 75 is 0.92175127, so, 10 / 0.92175127 = 10.8489137
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8. 3(4x + 4) + (x + 8) = 7x – 2(-3x + 11) Find the value of x
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3 0
3 years ago
How do I solve this equation (5x+9) + (3x-2)
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K-Mart is offering a 15% discount on children's clothing. Susan sees a jumper she likes for $30. How much does she pay for the j
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18. One number is 3 less than a second number. Twice the second number is 12 more than 3 times the first.
bekas [8.4K]

Answer: The numbers are -3 and - 6

Step-by-step explanation:

Let the first number be x and the second number be y , then from the first statement we have

x + 3 = y  ............. equation 1

From the second statement

2y  = 3x + 12 ............ equation 2

solving the resulting simultaneous equation by substitution method ,we have:

substitute x - 3= y  into equation 2 , we have

2( x + 3) = 3x + 12

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x = -6

substitute x = - 6 into equation 1 , that is

- 6 + 3 = y

Therefore ,

y = -3

2y = 3y + 3

Check:

x + 3 = y , implies

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Also 2y = 3x + 12 , implies

2(-3) = -6

3(-6) + 12 = -6

4 0
3 years ago
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