z=-3
Step-by-step explanation:
Answer:
30,000
Step-by-step explanation:
5,000 in 6 months therefore 10,000 in one year and 30,000 in 3 years
Answer:
The first number is 20, the second one is 11
Step-by-step explanation:
Let the first number be x and the second number be y
Since it says "9 is the difference between two numbers", the first equation will be x-y=9
It also says that "their sum is 31". That means the second equation will be x+y=31
here are the two equations:
x-y=9
x+y=31
You can solve this any way you like, but I'll show elimination
add the two equations
x-y=9
x+y=31
2x=40
divide by 2
x=20
Substitute 20 as x in one of the equations
20+y=31
subtract 20 from both sides
y=11
That means the two numbers are 20 and 11
Hope this helps!
Answer:
His quiz score increased by about 7%.
Step-by-step explanation:
Take the two quiz scores and add them together to get 159.
Take the difference between the two quiz scores to get 11.
Divide the difference by the sum to get 0.0692 or about 7%.
Answer:
7/20 is the scale factor
Step-by-step explanation:
We can see that Hexagon JKLMNO is bigger than Hexagon PQRSTU. This means that the scale factor is less than one.
LK is similar to QR.
QR/LK
7/20 is the scale factor.
