Tautology is when something is repeated in a sentence but using different words. It can be used to enrich the sentence but also it can be needless repetition.

5 statements that would produce a tautology:

1. Lets order a toast sandwich.
2. In my opinion, I think he is right.
3. The Gobi is a very dry desert.
4. The hurricane hit in 3 p.m. in the afternoon.
5. Don't worry, everything is well and good.

3 0

3 years ago

chris's hike started at an elevation of -12 m. His hike finished at an elevation of 235 m. How much did chris's elevation change

Ivan

235-(-12)=247; his elevation changed by 247 m.

3 0

4 years ago

Can somebody help me on this question

Brilliant_brown [7]

Step-by-step explanation:

82.....-82

-5.2.....5.2

7/9......-7/9

-y.......Y

4x.......-4x

0.......9/7

5 0

3 years ago

Read 2 more answers

Use the given information to determine the exact trigonometric value.

pashok25 [27]

Answer: $\bold{a.\quad -\dfrac{2\sqrt{6}}{5}}$

Step-by-step explanation:

$sin\theta=\dfrac{y}{h}\implies y=-1, h=5\\\\\\\text{Use Pythagorean Theorem to find x:}\\x^2 + y^2 = h^2\\x^2 + (-1)^2=5^2\\x^2+1=25\\x^2=24\\x=\sqrt{24}\\x=2\sqrt{6}$

$\text{Since }\theta\text{ is between }\pi\text{ and }\dfrac{3\pi}{2} \text{ (Quadrant III)},\text{ then x and y are negative.}\\\implies x=-2\sqrt{6}\\\\\\cos\theta = \dfrac{x}{h}\quad =\boxed{-\dfrac{2\sqrt{6}}{5}}$

5 0

4 years ago