Answer:
Step-by-step explanation:
All you have to di is subtract the exponents.
The thoasandthes place the 3 would be in the hundrethes place and the 6 would be in the tenths. Sorry for any spelling mistakes
Answer:
3937.5 or 3938 after round-off
Step-by-step explanation:
11 minutes 15 seconds = 11.25 minutes
5 members of the family shower 7 times a week for 11.25 minutes
=total of 393.75 minutes
393.75 times the amount of water used which is 10 litres becomes 3937.5
I hope this helps
Choice A is true. This is the Pythagorean identity. One of the most fundamental trig identities you should memorize.
Choice B is false. Let A = 60 and B = 30 and you'll see the left hand side turn into 0.5 while the right hand side turn into -0.5
Choice C is true. This is a variation of the identity tan^2+1 = sec^2 (just subtract tan^2 from both sides)
Choice D is true as this is a more complicated variation of 1+tan^2 = sec^2
Answer:
b. The variable will always be the letter x (false)
Step-by-step explanation:
Variables can be any letter or symbol. The letter x is often used as a variable, but that is not the only choice. Many formulas, for example, make use of variables that have letters reminding you what they stand for.
For example, the formula ...
A = 1/2(b1 +b2)h
uses the variables A, b1, b2, and h to represent area, base-1, base-2, and height, respectively. The letter x is not used at all.
