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3 years ago

11

Please help me to solve this problem

2 answers:

Leto [7]3 years ago

6 0

So you can choose any number from 11 to 19.

I'll choose 11 for now.

Then you write, 11, the number, and then spell it out, eleven.

To show how many tens and ones, you can make a place value chart. You would make two boxes, the first one for tens and the other for ones.

You would put a 1 in the tens place and a 1 in the ones place.

I hope this helps!

malfutka [58]3 years ago

5 0

Ok first we will do the picture of 11 tens and ones.

We would do one ten because it represents 10 ones. Then add 1 one. That's 11. To spell it, it's 'Eleven'. It's very simple.

Hope This Helps!!!

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Answer:

D

Step-by-step explanation:

our basic Pythagorean identity is cos²(x) + sin²(x) = 1

we can derive the 2 other using the listed above.

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A. sin^2 theta -1= cos^2 theta

this is false

cos²(x) + sin²(x) = 1

isolating cos²(x)

cos²(x) = 1-sin²(x), not equal to sin²(x)-1

B. Sec^2 theta-tan^2 theta= -1

1 + tan²(x) = sec²(x)

sec²(x)-tan(x) = 1, not -1

false

C. -cos^2 theta-1= sin^2

cos²(x) + sin²(x) = 1

sin²(x) = 1-cos²(x), our 1 is positive not negative, so false

D. Cot^2 theta - csc^2 theta=-1

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isolating 1

1 = csc²(x) - cot²(x)

multiplying both sides by -1

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TRUE

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$\huge\text{Hey there!}$

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