I only know how to do # 7.
7. 4.5^2 + 6^2 = 7.5^2
20.25 + 36 = 56.25
56.25 = 56.25
yes, the card is a right triangle because A and B added together equals the same as C
Answer:
no solutions
Step-by-step explanation:
n+(-n) = 3+ 15
n+-n = 0
0= 18
False
There are no solutions
Answer:
4 and -4 are both the square roots of 16
Step-by-step explanation:
To write the number is standard form we need to move the decimal point six times to the right, then:

therefore the answer is b.

you'll get a decimal format, just multiply it times 100, to get the % format