I’m gonna go with C sorry if I’m wrong
Answer:
the answer is C) 7 and -7
Step-by-step explanation:
We can solve this by writing down all of the variables we know. We will call the distance traveled on Saturday, x. The distance traveled on Sunday will be y.
x = distance traveled saturday
y = distance traveled sunday
We are told that on sunday he rode 3 miles more than 2/3 the distance on saturday. We can write a new formula.
y = (2/3)x + 3
We also not the total distance travelled, x + y = 43, now we solve for x.
x + y = 43
x + (2/3)x + 3 = 43
5/3x = 40
x = 24 miles
y = (2/3)(24)+3
y = 19 miles
Therefore, Mario biked 24 miles on Saturday and 19 miles on Sunday which gives us the total of 43 miles for the whole weekend.
Answer: 2.72 hours
Step-by-step explanation:
Let's call 
while it takes Wade to paint the room
Let's call 
while it takes Rhonda to paint the same room.
Then we know that:
.
Let's call it t as it takes Rhonda and Wade to paint the same room working together.
Now we use the following formula to calculate t.
If they work together they will be able to paint the room in 2.72 hours
Nice and simple. PEMDAS. Parentheses, exponents, multiple, division, addiction, subtraction.
The first thing you do is solve the numbers in the parenthesis, which would turn to
(312) + (714) = 1026
