Hello! I would love to help!
Let's first define solve. Solve means to get the variable, or unknown, by itself. So, we know that we've solved the equation if we get our variable, x, by itself.
Let's look at the problem like this: What number, minus 1/2, is equal to 4?
To solve this problem, let's reverse the order.
X-1/2=4
Since it is -1/2, let's add 1/2 to each side to cancel the one half out, since -1/2+1/2=0
X-1/2+1/2=4+1/2
Now, we can simplify!
X=4 1/2
That is your answer! X=4 1/2 or as an improper fraction 9/2.
If you want more help on questions like this, these two websites might be helpful,
https://www.mathplanet.com/education/pre-algebra/introducing-algebra/equations-with-variables
https://learnzillion.com/lesson_plans/6328-solve-equations-in-one-variable/
Hope this helped! Comment if you have questions!
Answer:
difference in the proportion = 0.0452
Step-by-step explanation:
x1 = 27, n1 = 193,
p1 = 27/193
p1 = 0.1399
x2 = 16, n2 = 169,
p2 = 16/169
p2 = 0.0947
a) The best estimate for the difference in the proportion of smokers, using male proportion minus female proportion is 0.0452. Male smokes more than females in given sample.
p1 - p2 = 0.1399 - 0.0947
p1 - p2 = 0.0452
Answer:
6
Step-by-step explanation:
2y/3 + 1/3 = y/2 + 1/6
We want to eliminate the fractions
The least common multiple of 3,2 and 6 is 6
Multiply each side by 6 to get rid of the fractions
6(2y/3 + 1/3) = 6(y/2 + 1/6)
4y +2 = 3y +1
The given expression is
First, we use the distributive property to get rid of the parenthesis.
Now, we sum 2x on each side
As you can observe, the variables were eliminated and the resulting equation is true. This means the equation has infinite solutions.
Answer:
1) 10
2) 5
3) 2 1/2
Step-by-step explanation: