He bought 3 folders and 2 notebooks
We are told that mrs Singh bought 9 folders and 9 notebooks,
If the cost of each folder is $2.50 and the cost of each notebook is $4, then;
2.5x = 9 and 4y = 9
Get the value of x:
2.5x = 9
x = 9/2.5
x = 3.6
Get the value of y;
4y = 9
y = 9/4
y = 2.25
Hence he bought 3 folders and 2 notebooks
Learn more on eqautions here: brainly.com/question/2972832
Answer:
$58.50
Step-by-step explanation:
First, you write the 2 expressions.
9(2.50+4) = 9(2.50)+4; $58.50
2.50 + 4 = $6.50
$6.50*9 = $58.50
Hope this helps.
Answer:
Step-by-step explanation:
If the radius of a circle is doubled, the area of the circle will be quadrupled and the circumference will also be doubled. This makes sense because the area of a circle is directly proportional to the square of the radius of the circle (if the radius of a circle is increased x times, its area will be increased to x^2 times the original area), whereas the circumference is proportional to the size of the radius (if the radius of a circle is increased x times, its circumference will increase x times).
For this case we have that by definition, the equation of a line in the slope-intersection form is given by:
Where:
m: It's the slope
b: It is the cut-off point with the y axis
By definition, if two lines are parallel then their slopes are equal.
If we have the following line:
Whose slope is
So, a line parallel to it has a slope
Therefore, the equation is of the form:
If the line passes through point we can substitute in the equation and find "b":
Finally, the equation is:
ANswer:
Answer:
y=x+2
Step-by-step explanation: