Answer:
It can be any kind of fraction, the possibilities are endless. So what you do is multiply it by one. I know that sounds kind of wrong, but you'll see. So you know that because of one rule (I forget the name, I'll get back to you on that one) But it says that one can be expressed as a fraction, which allows you to create an equivalent fraction. For example 2/3 x 3/3 = 6/9, simplified = 2/3.
Answer 2
Answer:
3/9 is equivalent to 1/3 if we multiply both of them by 3
A boat takes 8 hours to go 6 miles upstream and come back to the starting point. If the speed of the boat is 4 miles per hour in still water, what is the rate of the current? Hint: total time taken = time taken to go upstream + time taken to go downstream
Answers
Let x = velocity of the water current t1 = time taken to go downstream t2 = time taken to go upstream t1 + t2 = 8 t2 = 8 – t1 v = D/t Downstream (4 + x) = 6/ t1 t1 = 6/(4+x) Upstream (4 – x) = 6/t2 Substitute expression for t2 to obtain (4 – x) = 6/ (8-t1) Substituting the expression of t1 to make a single variable equation, obtaining 6 = (4-x)*(8 – 6/(4+x)) Solving for x, x= 3.16 m/s
103 is 20% of what number
Answers
Use property of proportions:
103 ---------- 20% x ---------- 100%
So, 103 is 20% of 515
(3m-2)(3m 2) determine each product
Answers
(3m - 2)(3m + 2) = ((3m)^2 - (2)^2) = 9m^2 - 4
What is the value of x in the equation x – y = 30, when y = 15?
Answers
X=45
x - y = 30 y = 15 x - 15 = 30 x = 30 + 15 x = 45
Write an equation in the form Ax+By=C, given that m=2/3 and y intercept is (0,-3) where a,b, And c are integers
Answers
Answer:
2x - 3y = 9
Step-by-step explanation:
The slope-intercept form of an equation of a line: