which of these is a rational number?
A) PI
B) √3
C) √2
D) 1.3
James attached a diagonal brace across a rectangular frame the measures 6 feet by 8 feet. what is the length of the diagonal brace?
A) 20ft
B) 10ft
C) 14ft
D) 48ft
4 answers
And you think the answers are ... ?
idk. thats why im asking for help
Ok, for the first one, a rational number is a number that can be written as a fraction. A? No. B? No. C? No. D? Yes. If a number can't be written as a fraction, or doesn't have repeating decimals, it's called an irrational number.
For the second one, this requires using the Pythagorean Theorem which is a^2+b^2=c^2. A and B are the side lengths of a right triangle and C is the digonal of the right triangle. Plug values in to get 6^2+8^2=c^2. Solving that gets you c=10. So the diagonal is 10ft.
Do my explanations make sense? Let me know if you are still stuck.
For the second one, this requires using the Pythagorean Theorem which is a^2+b^2=c^2. A and B are the side lengths of a right triangle and C is the digonal of the right triangle. Plug values in to get 6^2+8^2=c^2. Solving that gets you c=10. So the diagonal is 10ft.
Do my explanations make sense? Let me know if you are still stuck.
thank you so much! i understand now
5 answers