Selina has a homework consisting of 4 questions.In each question,she needs to find the value of each power.When she turns in her homework,her teacher says she got 3 correct answers which of the following values did she calculate incorrectly?
a.(-3)0 = 1
b.(-3)2 = 9
c. -3 2 =9
d.(0.3)2 = 0.09
PS- the numbers by the parenthesis and the -3 without parenthesis means the power of (ex:) (-3)0 (negative 3 to the power of zero.)
can you please make the question's lardgerand easy to answer
Please put them in question's I understand many thanks from Selina
Can you please send by post all the all stuff I've missed out on
and all the homework
Many thank's
selina simone cunnington
all homework please
To determine which value Selina calculated incorrectly, let's go through each option:
a. (-3)^0 = 1: This is correct. Any number raised to the power of 0 equals 1.
b. (-3)^2 = 9: This is also correct. When raising a negative number to an even power, the result is positive.
c. -3^2 = 9: This is the problem. Selina made a mistake here. When the negative sign is not inside the parenthesis, only the number itself is being raised to the power. So, -3^2 should be -9, not 9.
d. (0.3)^2 = 0.09: This is correct. When raising a number between 0 and 1 to a power, the result becomes smaller.
Therefore, the incorrect calculation Selina made was in option c, where she incorrectly calculated -3^2 as 9 instead of -9.