Answer:
(x, y) = (- 13/2 + 3/2 * y, y) ,y in mathbb R
Step-by-step explanation:
4x-6y=-26
-2x+3y-13
4x-6y=-26
x=-13/2+3/2y
4(-13/2+3/2y) - 6y=-26
y in mathbb R
x, y) = (- 13/2 + 3/2 * y, y) ,y in mathbb
Answer:¿cual es la causa de que sean esos estados?
¿¿cual es la causa de que sean esos estados?
Step-by-step explanation:
Answer:
78/4=19.5, 68/7=9.71, 98/6=16.3
Step-by-step explanation:
Part A:
90.10 = 0.30x + 55
Part B:
Subtract 55 from both sides
90.10 = 0.30x + 55
-55 -55
__________________
35.10 = 0.30x
Next, you need to isolate the variable so you must divide both sides by 0.30. You should get:
117 = x
Vin sent 117 text messages that month.
Part C: (this part is a bit unclear, though I will try to answer it as best I can)
I found the number of text messages Vin sent in the month of October by creating an equation that outlined his bill and solving it.
First, convert your mixed numbers into improper fractions, so 8+3/8=69/8 and 2+1/3=7/3. Now you have 69/8=r-(7/3). Now, add 7/3 to both sides, so (69/8)+(7/3)=r. Now, just add your fractions, so (69/8)+(7/3)=207/24+56/24=(207+56)/24=263/24. If you need to, this can be converted back into the mixed number 10+23/24.