Anyone please help with question 14 and 15 thank you (:!!????

Mathematics

1 answer:

musickatia [10]2 years ago

4 0

false stretching should never be painful soreness and pain are different:)

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why is sin(90 degrees) = 1. I know that that is the answer you get when you plug it into a calculator. I need an explanation as

sveta [45]

Answer:

Sin 90 = 1/1 = 1

Use trigonometry formula and a triangle with lengths of 1

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Give a geometric interpretation of the triangle inequality

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The sides must be long enough to make a triangle. (If the sides are not long enough, they won't meet, so cannot form a triangle.)

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If your version of the triangle inequality includes the "or equal to" case, then the segments must be long enough to meet, even though the result may look like a line segment.

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If the function f(x) = -1/2x - 7 were graphed, which of the following would be true?

Fittoniya [83]

ANSWER

D. As the x-values increase, the y-values would decrease

EXPLANATION

The given function is
$y = - \frac{1}{2} x - 7$

The slope of this function is
$m = - \frac{1}{2}$

Since the slope is negative, there is a negative or an inverse relationship between x and y.

As the values of x increases, the values of y decreases.

Also, as the values of x decreases, the values of y increases.

The first option is not true because as x is becoming bigger and bigger negatively, y will become positive.

For instance, when
$x = - 40$
$y = - \frac{1}{2} ( - 40) - 7$

This implies that,

$y = 20 - 7 = 13$

Options B is obviously not true because the function has a negative relationship between x and y.

Option C is also false because, x can be positive since it is the independent variable.

See graph

Therefore, the correct answer is option D.