2 years ago

When x = 12, y = 8. Find x when у = 12

Mathematics

1 answer:

Bad White [126]2 years ago

7 0

Answer:

$y = \frac{12 \times 12}{8} = 18$

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Find the zero of: f(x)=5x+195

monitta

Answer:

(x + 39) or x = -39

Step-by-step explanation:

Set f(x) to 0

0 = 5x + 195

5x = -195

x = -39

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2 years ago

Prove that 1/sin^2A -1/tan^2A= 1

Vika [28.1K]

Answer:

Step-by-step explanation:

$LHS =\dfrac{1}{Sin^{2} \ A }-\dfrac{1}{Tan^{2} \ A }\\\\\\ = \dfrac{1}{sin^{2} \ A}- \dfrac{1}{\dfrac{Sin^{2} \ A}{Cos^{2} \ A}}\\\\\\= \dfrac{1}{sin^{2} \ A } - \dfrac{Cos^{2} \ A}{Sin^{2} \ A}\\\\\\= \dfrac{1-Cos^{2} \ A}{Sin^{2} \ A}\\\\\\= \dfrac{Sin^{2} \ A}{Sin^{2} \ A}\\\\\\= 1 = \ RHS$

Hint: 1 - Cos² A = Sin² A

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2 years ago

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IgorLugansk [536]

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Step-by-step explanation:

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2 years ago

A ant traveled 8 meters in 10 minutes. How many minutes did it take him to travel one meter?

notka56 [123]

Answer:

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Step-by-step explanation:

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BE is the midsegment of triangle ACD. The value of x is:

Anna35 [415]

The midsegment theorem says that the midsegment is half the third side and parallel as well. 20*2 is 40 so x = 35

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