Answer:
Step-by-step explanation:
The population in 1981 is 46 million.
In 2011, the population increased to 53 million.
The increase in population is (53 -46)million =7 million
Now we express 7 million as a percentage of 46 million
=15.22%
Franco:
3x+2y=19
Caryl:
2x+4y=24
now use elimination
-2(3x+2y=19)
1(2x+4y=24)
=
-6x-4y=-38
2x+4y=24
add them together
which equals -4x=-14
divide both sides by -4
-4x/-4=-14/-4
x=7/2
we found x, so we subsitute it into the the original equation
3x+2y=19
3(7/2)2y=19
2y+21/2=19
-21/2 -21/2
2y=17/2
divide by 2 on both sides
2y/2= 17/2/2
y=17/4
so x= 7/2 and y= 17/4
Answer:
the number is -6 (assuming "3 lots of" means 3 times)
Step-by-step explanation:
Let the number be x
1 less than a doubled number
2x-1
5 more than 3 lots of (times???) the number
3x+5
Solve for x
2x-1 = 3x + 5
-x = 5+1
x = -6
Answer: 10 or -10
Step-by-step explanation: 3x + 12 = -18
-12 both sides then you get 3x = -30 divide by 3 which equals x = 10 or -10
Hi There!
Since 3 teachers share 2 packs of paper equally, you have to divide 3/2, once you divide you should get the answer of 1.5, To check you're answer do 1.5*2 which equals to three. So, each teacher gets 1.5 packs of paper.
Hope This Helps :)