Step-by-step explanation:
7/x=12/14=6/7
x=49/6=8.167
Answer:
The first step is to replace the y in y-x=15 with 7x (we can do this because the first equation tells us that they're equal)
solve and get
(2.5,17.5)
or x= 2.5 y=17.5
Step-by-step explanation:
The first step is to recognize that y=7x which means that we can just replace the y in the second equation with 7x
7x-x=15
6x=15
x=2.5
Then we can solve for y
y=7(2.5)
y=17.5
Answer:
The area of the circle is 28.26
The area of the circle in terms of pi is 9π
Step-by-step explanation:
radius = half of diameter
d = 6
r = 6/2 = 3
To solve this problem we need to use the area formula of a circle:
a = area
r = radius = 3
π = pi
a = π * r²
we replace with the known values
a = π * (3)²
a = π * 9
a = 9π
The area of the circle in terms of pi is 9π
9 * 3.14 = 28.26
The area of the circle is 28.26
Answer:
15%
Step-by-step explanation:
34.50-30=4.50
10% of 30= 3
5%of 30 = 1.50
3+1.50=4.50
so 4.50 = 15%
Replace the letters with their given values:
6(6) - 8 / 4
Do the multiplication:
36-8 / 4
Subtract:
28/4
Divide to get the final answer :7
Answer = 7
