Pls someone help me or i’ll faint
2 answers:
Answer:
see explanation
Step-by-step explanation:
Using Pythagoras' identity in the right triangles.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
DF² = DE² + EF² , then
(a)
DF² = 16² + 12² = 256 + 144 = 400 ( take square root of both sides )
DF = = 20
(b)
DF² = 7² + 2² = 49 + 4 = 53 ( take square root of both sides )
DF = ≈ 7.28 ( to 2 dec. places )
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Question:
Give all the x and y intercept of the function
Answer:
The x intercepts are x = 5 and x = -4
The y intercept is at y = -2
Step-by-step explanation:
Factorizing the numerator of the expression we find the x intercepts as follows;
Therefore, the x intercept are
x = 5 and x = -4
To find the y intercept, we put x = 0 to get y = -2
Therefore, the y intercept is at y = -2
Factorizing the denominator we find the values for which the equation is undefined
2·x³ + 2·x² - 34·x + 30 = 2·(x-1)·(x-3)·(x+5) which gives
x = 1, 3 and -5.