2x + 3y = 630
x + y = 245 then you want to get rid of x so in the second equation × by -2 and get -2x -2y =-490 subtract this equation from the first to get y=$140 substitute 140 in for y and get x= $105 and 2x=210 and 3y=420 210 +420=630
Answer:
house keeping
Step-by-step explanation:
The 3 angles need to equal 180
The middle angle is given as 100.
180 -100 = 80
There is an x on each side so you have 2x
2x = 80
X = 80/2
X = 40 degrees
<u>Answer:</u>
The geometric mean between each pair of numbers
<u>Solution:</u>
The Geometric mean between two numbers a and b is given as Geometric mean = --- eqn 1
The Geometric Mean is a special type of average where we multiply the numbers together and then take a square root for the numbers.
From question, given that two numbers are
Hence we can say “a” = =7
Similarly “b” = = 29
We have to find the geometric mean between “7” and “29”
By using equation 1,
Geometric mean between 7 and 29 = = 14.24
Hence the geometric mean between