(-7,-5)
Step-by-step explanation:
3x-8y = 19
minus
3x + 5y = -46
0x - 13y = 65
- 13y = 65
÷-13
y = - 5
Substitute y = - 5 into one of the functions:
3x-8y = 19
-8 x - 5 = 40
3x + 40 =19
-40
3x. = - 21
÷3
x= - 7
Solution is (-7,-5)
Hope this helps!
Answer:
x=-3/43
Step-by-step explanation:
Answer:
Infinitely many solutions
Step-by-step explanation:
2x+8y=6
5x+20y=15
------------------
simplify 2x+8y=6 into x+4y=3
simplify 5x+20y=15 into x+4y=3
------------------------
infinitely many solutions
Answer:
k = 27/4
y = 283.5
Step-by-step explanation:
Let
y = amount of water used
x = number of dogs washed
y = kx
y = 81 gallons
x = 12 dogs
y = kx
81 = k * 12
81 = 12k
Divide both sides by 12
81/12 = 12k/12
k = 81/12
k = 27/4
k = 6.75
Find x when y = 42 dogs
y = kx
y = 27/4 * 42
y = (27*42) / 4
y = 1,134 / 4
y = 283.5
y = amount of water used = 283.5 gallons
Answer:
25in²
Step-by-step explanation:
a cube has 6 faces
all of these are equal
therefore you need to divided 150 by 6
that's 25
the answer is 25 in²
