Answer:
the given equation is y=4/7x
reciprocating both sides you get y/x =7/4
now x and y are directly porportional to each other so
x=ky where k is the constant
or x/y=k ......................(2)
equating 1 and 2
k=7/4
Step-by-step explanation:
Answer:
x=2, y=1
Step-by-step explanation:
4x+8y=16
4x-8y=0
Add the two equations together:
8x=16
Divide both sides by 8:
x=2
Plug this back into one of the original equations to find y:
4(2)-8y=0
8-8y=0
y=1
Hope this helps!
Answer:
Step-by-step explanation:
Cost of one dress = 
Cost of one pair of shoes = 
Cost of one dress and a pair of shoes is 
They get half off the price because they buy both
The shipping and handling charge is 
.
So, the total amount Ruth has to pay is 
.
Answer:
The answer is 28/5
Step-by-step explanation:
5.6 can be written as 56/10 into vulgar fraction.
Thus, The answer is 56/10 = 28/5
<u>-TheUnknownScientist 72</u>
Answer:
The perimeter is 27 km
The area is 21 km^2
Step-by-step explanation:
The perimeter of a triangle will just be all of the sides added up.
12 + 9 + 6 = 27 km
The area of a triangle is:
A = 1/2 * base * height
The base is 6 km, and the height is 7 km. Substituting the values in and solving, we get:
A = 1/2 * 6 * 7
A = 3 * 7
A = 21 km^2
