Answer:
5 : 6
Step-by-step explanation:
The ratio is ...
girls : boys = 20 : 24
By removing a common factor of 4 from each of these numbers, the ratio can be reduced to lowest terms:
girls : boys = 5 : 6
So the gradient is the negative reciprocal of the question so first you have to rearrange the equation into the form y = mx + c so you get 3y = - 5 x + 11 and then y = -5/3 x + 11/3. Now to find the gradient of the line perpendicular to it you do the negative reciprocal and get 3/5 x so now you have the equation y = 3/5 x + c . Now simply substitute your coordinate into the equation to get -2 = 3/5 x -2 + c and 3/5 x -2 is -1.2 so now you have 2 = -1.2 + c so c is 3.2 so your final equation is y = 3/5 x + 3.2 hope this helps :)
Answer:
No, it is not.
Step-by-step explanation:
1/5 is equal to 0.2
5/1 is equal to 5 because there are 5 ones.
K is equal to -69.5 K=69.5 You put it in an equation 47.9-K=-21.6Then you subtract 47.9 from both sides and you get K=69.5
Answer:
7
Step-by-step explanation: