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attashe74 [19]
3 years ago
5

6 less than twice a number is at least 15. Write an inequality and solve.

Mathematics
1 answer:
Ivan3 years ago
6 0

Answer:

2a-6>=15 this is because the key word at least means it can be 15 or higher but it cannot be less than 15.

Step-by-step explanation:

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Differentiate both sides with respect to <em>x</em>, using the chain rule for the sine term:

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Find the value of x. Give your answer in simplest radical form.
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"sqrt" stands for "square root"

-------------------------------------------------------

Refer to the attached image. The figure is not to scale. Notice how I've added in y and z (blue and red respectively)
The length y is the bottom horizontal leg for the triangle on the right.
The length z is the bottom horizontal leg for the triangle on the left.

To find x, we need to find y first, which will help us find z, and then we can finally get to x.

Let's find y first
To do this, we use the pythagorean theorem
a^2 + b^2 = c^2
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Notice how the y and z lengths combine to form a total length of 25 units
Therefore,
y+z = 25
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Now that we know z = 13, we can find x. Again we use the pythagorean theorem one last time
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