Answer:
1.6
Step-by-step explanation:
Yes, you need to make the denominators the same. 2/3 becomes 8/12. So now you add 7/12 and 8/12, getting 15/12. But you're not done you need to simplify 15/12. The answer is 1 1/4.
Answer: This expression is equivalent to 3^x
Step-by-step explanation: In this question the important concept is to write 80 in exponential form and multiply the exponents.
=80^1/4x
=(3^4)^1/4x
=3^x
Answer:
No
Step-by-step explanation:
In order for three sides to make a triangle, if any two sides are added together, their sum should be greater than the third side:
=><u> 5 + 7 = 12 < 13 (DOES NOT check off the rule)</u>
=> 7 + 13 = 20 > 5 (Checks off the rule)
=> 5 + 13 = 18 > 7 (Checks off the rule)
As shown, even though 2 of the statements check off the rule the third one does not, this means that the sides don't make a triangle.
Hope this helps!
