Let M equals to Mario's weight (M = Mario’s weight) then formulate an equation from the given phrase: "Victoria weighs 5/7 as much as Mario. Victoria weighs 125 lb", so the equation would be: 125 lb = (5/7) M. To solve for M, multiply both sides by 7, then it will result to 875 = 5M then finally, divide both sides by 5 to get Mario’s weight which is equals to 175 lbs.
Answer: The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try.
Answer:
A) 1.
Step-by-step explanation:
An example is y = 4x - 3 .
The degree is the exponent of x which is 1.
Let's say that y is the weight of the mother and x is the weight of the baby.
We know that the baby is 7437 pounds less than the mother, which means you need to add 7437 pounds to the baby's weight to get the mother's.
We can show it like this:
x+7437=y.
We know what the baby's weight is (1400 lbs), so just sub it in:
1400+7437=y
y=8837 lbs
The mom weighs 8837 pounds.
Answer:
3rd group of possible answers is the correct set
Step-by-step explanation:
Each of the three points in the 3rd line of possible answers is a solution of the given equation, as can be verified by substitution:
If x = -2, y = -8(-2) = +16
If x = 3, y = -8(3) = -24
If x = -4, y = -8(-4) = +32
