It's a proportion, 65/100 • 39/60. To get this you do 65/100 ( that's the percent) • 39/x. You multiple 100•39 and divide that answer by 65
In 3 hours, one good worker can paint one fourth of your house. Three good workers can thus paint three fourths of your house in three hours, leaving one fourth to be done by bad workers.
One bad worker can paint one twelfth of your house in 3 hours. There are three twelfths in one fourth, so you will need to hire three bad workers to have your house painted on time.
Answer:
Gradient of parallel line= 7
Gradient of perpendicular line ![= - \frac{1}{7}](https://tex.z-dn.net/?f=%20%20%3D%20-%20%20%5Cfrac%7B1%7D%7B7%7D%20)
Step-by-step explanation:
The equation of the line is already in slope-intercept form (y= mx +c). This means that the coefficient of x is the gradient and the constant -3 is the y-intercept of the line.
y= 7x -3
Gradient= 7
Parallel lines have the same gradient.
Thus, the slope of the line parallel to this line is also 7.
The product of the gradients of 2 perpendicular lines is -1.
(Gradient of perpendicular line)(7)= -1
Gradient of perpendicular line
= -1 ÷7
![= - \frac{1}{7}](https://tex.z-dn.net/?f=%20%3D%20%20-%20%20%5Cfrac%7B1%7D%7B7%7D%20)
Step-by-step explanation:
Btw The one on the upper right hand side is Right angle
Answer:
m = 4√2
Step-by-step explanation:
This is a right angled isosceles triangle whose sides are in the ratio 1:1:√2.
So = 8 / √2
= 8 *√2 / 2
= 4√2