Answer:
Substitution, but this system of equations has no solution.
Step-by-step explanation:
2x-4y=10
2y+6=x
----------------
2(2y+6)-4y=10
4y+12-4y=10
12=10
no solution.
Answer:
k=5
Step-by-step explanation:
for every one unit on the x, the y goes up five. So, the ratio is 5:1 or five.
Answer:
- 8x² + 36xy - 36y²
Step-by-step explanation:
Given
(- 2x + 6y)(4x - 6y)
Each term in the second factor is multiplied by each term in the first factor, that is
- 2x(4x - 6y) + 6y(4x - 6y) ← distribute each parenthesis
= - 8x² + 12xy + 24xy - 36y² ← collect like terms
= - 8x² + 36xy - 36y²
Answer:
Total number of trees planted = trees
Step-by-step explanation:
Trees planted by each student =
Total number of students =
Using unitary method to find total number of trees planted by all the students in school.
1 student plants = trees
student would plant =
We apply the product rule of exponents to multiply
⇒
⇒
⇒ trees
Total number of trees planted = trees
Answer: 6
Explanation:
Order of Operations means multiplication comes before subtraction so 3x3 = 9
And 15-9 is 6.