Answer:
Step-by-step explanation:
Recall that the quadratic formula gives you the pattern to follow in order to find the solutions to a quadratic equation of the form: 
It tells us that we need to use the parameters 
and 
in the following formula in order to get the answers for the x-values that solve it:
so, in our case, 
, 
, and 
then, replacing these values in the formula, we obtain:
Which looks like the third expression you are listing (although it is a little hard to read)
Answer:
This is a kite!
Step-by-step explanation:
Answer:
45/2
Step-by-step explanation:
3x-y/2
3(7)-(-3)/2
21+3/2
42/2+3/2
45/2
Answer:
A and D have whole grid squares that are the same size and aren't over lapping
C has overlapping grid squares making it hard to count
B can't be used to find area because some of the grid squares are different sizes
You still could use B because four of the smaller squares seems to be equivalent to one of the larger squares
Step-by-step explanation:
Answer:
45 meters
Step-by-step explanation:
Perimeter of the triangle is the sum of the 3 lengths of the traingle. Since the ratio of the sides is 4:6:9, let the shortest side be 4 units, the longest side be 9 units and the 3rd side be 6 units.
Units is represented as u.
Sum of all 3 sides= 95 m
4u +6u +9u= 95
19u= 95
u= 95 ÷19
u= 5 meters
Longest side= 9 units
Length of the longest side= 9(5) = 45m
