Answer:
C. 65
Step-by-step explanation:
Compare to the standard form ...
ax² +bx +c
to find the values of a, b, c. They are ...
a=2, b=3, c=-7
The discriminant is ...
d = b² -4ac
d = (3)² -4(2)(-7) = 9 +56
d = 65 . . . . . . matches choice C
Answer:
I would love to help you but I'm only in 7thhh
The area of a parallelogram is base x height, or A = bh.
a) A = 6 x 10, so A = 60 cm²
b) A = 15 x 8, so A = 120 cm²
1. To find the mean absolute deviation of the data, start by finding the mean of the data set.
2. Find the sum of the data values, and divide the sum by the number of data values.
3.Find the absolute value of the difference between each data value and the mean: ...
4. <span>Find the sum of the absolute values of the differences.</span>
You can approach this question in multiple ways, 2 of which are more obvious.
Method 1). Add up the number of marbles which aren't white divide that by the total number of marbles.
I.e. 8 + 14 + 10 = 32
32/48 = 2/3
[There are 48 marbles in total]
Method 2). Find the total number of marbles, divide the number of white marbles by the total (like method 1), then do 1 minus the answer.
I.e. 16/48 = number of white marbles
1 - 16/48 = 2/3
