Answer:
A, C ,E
Step-by-step explanation:
Answer:
C) 4 pencils for each student
D) 8 students per team
Step-by-step explanation:
A unit rate is the number of unit of the first type of a quantity corresponding to one unit of the second type of quantity.
That is, if a and b are two quantities,
Then, unit rate of quantity a = x units of 'a' per 1 unit of 'b' or x units of 'a' for 1 unit of 'b'
By the above statement,
The example of unit rates from the given options are,
4 pencils for each student,
8 students per team
-7(x-4) = 63. Divide each side by -7.
x - 4 = -9. Add 4 to each side.
x = -5
You would use distribution. So, in this case, it would be 10a - 50. You use -10 to multiply -a and 5, and you get 10a, and -50.
Answer:
-4 or -3
Step-by-step explanation:
Calculate the determinant:
D = b^2 - 4ac = 49 - 48 = 1
Apply the formula:
x = (-b +- sqrt(D))/2a = (-7 +- 1)/2 = -4 or -3
