Answer:
B
Step-by-step explanation:
You can rule out all others. A is wrong because a triangle cannot be acute and obtuse at the same time. C is wrong because a polygon dosen't neccassarily need to be a triangle, for example, a polygon is a closed shape, so it could be a rectangle. It isn't D because there are obtuse triangles out there. So, the only one left is B.
Answer:
X = 5
Step-by-step explanation:
I think there a problem with the question, If there is one less person in the group then the payment by each remaining person is must more than $2 than the previous, because the rent cost unchanged but the number of people in the group decreased.
Before, cost per person :
After cost per person: =
However, the payment by each remaining person is more than $2 than the previous, so
= + 2
<=> - 2x -40 = 0
<=> X = 5
To solve the quadratic equation given by 0=x^2-9x-20, we use the quadratic formula given by:
x=[-b+\- sqrt(b^2-4ac)]/(2a)
where,
a=1,b=-9,c=-20
thus substituting the above values into our formula we get:
x=[9+\-sqrt(9^2-4(-20*1))/(2*1)
x=[9+\-sqrt(161)]/2
x=[9+sqrt161]/2 or x=[9-sqrt161]/2
Okay. the best way to do this is to first change it to a fraction, and then think of how you would say it. so, when changing a decimal to a fraction, look at the right most number. 6 is in this case. what place is it in? 6 is in the thousandths place. (if this doesn't make sense to you we can go over it seperately). whatever place that number is in, THAT'S your denominator. so I have:
some number
---------------------
1000
what's that "some number"? well, going from left to right, and ignoring the decimal, I have 306, right? this number is your numerator, or top value. so now I have....
306
-------
1000
alroght! so how would you say that? personally, I would say:
three-hundred and six thousandths. this would be in word form. hope that helps!
Answer:
the difference between a number and 10 simply means ,that number minus 10
hope it helps. please do me a favor and Mark me Brainleist please please please please please please please please please please please please please please please please please please please please.