The general rule for a linear equation is y=mx+c where m is the slope or gradient... therefore the slope is 3.
Now we need to get 2 points on the line.
You can easily get the y-int by substituting x=0 into the equation... therefore the y-int is 11... you have one point on the line: (0,11)
Now that you have one point and we know the gradient or slope which is 3, go from the point you have found (0,11) and go up 3 and across 1 to find a second point... then simply rule a line in between the two points.
divide 360 by 2 with an outcome of 180 then multiply by 3
answer is 540
The answer is 6.4 x 8 in.
The scale 5 : 4 means that the old photo is 5 and the new photo is 4.
Now, let's find the new dimensions using the proportion for each side separately.
5 : 4 = 8 : x
x = 4 * 8 : 5
x = 6.4 in
_____
5 : 4 = 10 : y
y = 4 * 10 : 5
y = 8 in
So if y= 7 you plug in the variable into the equation.
3(7-5)
3(2)
6
The answer is 6. I hope this helps love!:)
Let's start by knowing what a real number is. A real number is a quantity that can be plotted in a number line or a Cartesian plane. So all integers, rational numbers and radical numbers are real numbers. The only instance when it is not real, is when they are imaginary. These are still numbers, but they have a term 'i' associated with them. Numerically, i = √-1. There is no equivalent quantity to a root of any negative number. It can't be placed anywhere in the number line.
So, for the problem where the number is √-36, we can simplify that to
√-36 = √-1(36) = 6√-1 = 6i
Hence, √-36 is equal to 6i. It can't be expressed into a real number in any way.
However, I'm going to add an additional information. An imaginary number could become real when raised to the power of 2 or 4. This is because
i = √-1
i² = -1
i⁴ = 1
In that case, the number becomes real.
