Answer:
a) 8 hours
Step-by-step explanation:
h = # hours worked
240 = .05(3200) + 10h
240 = 160 + 10h
80 = 10h
8 = h
In order to solve it we have to make two equations for Tony and Ray. But first we have to appeal to the formula : Distance = Speed*Time. Since we have two speeds we can match minimum speed and aximum speed with x and y respectively. So, now we can make an equation for both guys:
2x+3.5y=355 for Tony
2x+3y=320 For Ray
Then substracting : the Rae's equation from Tony's one in order to solve both equations.
You get 5y=35 solve for Y which is 70.
The next step is plug the value you have obtained into any equation to find a solution for x.
Let's take this one :
2x+3(70)=320
x=55
Do hope you will find it helpful!
Answer:
575 births per year
Step-by-step explanation:
Take 600 plus 550 and divide it by two because you added two numbers together.
The sum of angles in a triangle is 180 degrees.
Therefore: 2x + 3x + 4x = 180
9x = 180 Divide both sides by 9
9x/9 = 180/9
x = 20
x = 20°