Answer:
B
Step-by-step explanation:
You are combining like terms.
1.) find all of the #x³ and there is only one and that is -x³ so that limits the problem to B or D.
2.) now you find all of the #x² and there are three of them being 10x², -x², and 4x². Now that you have identified them you will add them together to get a sum of 13x²
you don't have to do anymore of the question because D does not have 13x² so it is B.
21X+7=2...........`\21X=2-7...........\ 21X=-5.............. X=-5÷21... this is the right answer..(x=-5÷21)
Answer:
38.465 ft²
Step-by-step explanation:
the area of a circle can be calculated using the following formula:

the radius is half of the diameter:


Answer:
the answer is option D
Step-by-step explanation:
if you add the no of students in favour of the survey
32+42+58+64=192
which makes the first option incorrect.
The opinion of tenth and eleventh graders are not identical.
11th and 12th graders gave a favourable response
so options A,B and C are incorrect
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