Answer:
scale factor = 5
Step-by-step explanation:
To determine the scale factor calculate the ratio of corresponding sides of the enlargement to the original, that is
scale factor = =
= 5
Javier earned $820 dollars this week .he net income was $683.20.he paid $95.60 in federal income tax. How much did Javier pay in
2 answers:
You might be interested in
Answer:
Step-by-step explanation:
Let the number be x;
The product of 4 and the number will be;
The the square of the number is given as;
Taking the difference of both expressions above;
Factor out the common term:
Hence the difference between the product of 4 and a number and the square of the number is
Answers:
The starting equation is (x+5)/3 = 7 which can be written as
The solution to this equation is x = 16
========================================================
Explanation:
Let x be a placeholder for some number. If we start off with some number and add on 5, then we go from x to x+5. The next thing we do is divide all of "x+5" all over 3 to get (x+5)/3 which can be written as . I'll use the first style of notation.
Set the expression (x+5)/3 equal to 7 and that leads us to the equation:
(x+5)/3 = 7
so this is the first part of the answer. Now onto the second part which is solving for x. We want to get x all by itself on its own side.
To do this, we follow the order of operations PEMDAS in reverse. So we undo division first by multiplying both sides by 3. Then we undo the addition of 5 by subtracting 5 from both sides
(x+5)/3 = 7
3*(x+5)/3 = 3*7 ...... multiply both sides by 3
x+5 = 21
x+5 - 5 = 21 - 5 ..... subtract 5 from both sides
x = 16
So the unknown mystery number is 16. As a check, note how adding 5 to 16 gets us 16+5 = 21, which if we divide by 3 we end up with 21/3 = 7 which is what we want. So the answer is confirmed.