Answer:
10 easy levels and 10 difficult levels
Step-by-step explanation:
Given data
let the number of easy levels be x
and the number of difficult levels be y
so
x+y= 20----------1
and
3x+5y= 80------2
from 1
x=20-y
put this in 2
3(20-y)+5y= 80
60-3y+5y=80
2y=80-60
2y=20
y= 20/2
y= 10
put y= 10 in 1
x+10=20
x=20-10
x= 10
Hence Kiran played 10 easy levels and 10 difficult levels
Answer:
1. {0, 1/5, 2/5}
Step-by-step explanation:
all other answers have a 2 in them and 5(2)+2 is 12 so it wouldn't be less than 10
Answer:
A. y= - 1/2x + 20
B. the initial value represents the total amount of gasoline used for snow plowing (in gallons)
C. the slope indicates that for every driveway plowed they use 1/2 a gallon of gasoline
hope this helps ;)
Answer:
Every whole number is a rational number: for example, 3=31. So it is rational. Every whole number n can be written as a fraction of integers: n=n1. We aren't required to write it that way; we just need to know that it is possible to express every whole number as a fraction of integers, and hence it is rational.
Step-by-step explanation:
hope this helps
Answer:
1. 5x = 10
5x-1 = 9
2. 5x = 50
5x-1 = 49
3. 5x = 60
5x-1 = 59
4. x = 5
5x-1 = 24
5. x = 7
5x = 35
6. x = 20
5x = 100
Step-by-step explanation:
substitution x in each one
for example
x = 2
5x = 5×2 (×2 because x = 2)
so, 5x = 10
about question number 4
5x=25
x = 25÷5 (change side change mark)
x = 5
questions that I don't show you how to think
let's get it by yourself
change side change mark. it's mean
if in equation is plus change to minus
if in equation is minus change to plus
if in equation is divided by change to multiply
if in equation is multiply change to divide by
hope it helps you ☺️
