(1) 2 of one step equations
x - 23 = 8
x - 23 + 23 = 8 + 23
x = 31
n + 2 = 9
n + 2 - 2 = 9 - 2
n = 7
(2) 2 equations with fractions
3/4 (x + 3) = 9
4 [ 3/4 (x + 3) ] = 4[9]
3 (x + 3) = 36
3x + 9 - 9 = 36 - 9
3x/3 = 27/3
1/3 x 3/4
cross multiply
so 3/12 and simplify which makes it
1/4
(3) distributive property
3(2 + 4) = (3 • 2) + (3 • 4)
3(6) = 6 + 12
18 = 18
Answer:
1/25, 1/5, 1
Step-by-step explanation:
Centimeters. or the Metric System.
Multiply the first equation by 3 and the second equation by 2:
Subtract the two equation to get rid of the x variable:
Use the value of y to determine the value of x: for example, using the first equation we have
Answer:
43,000 Citizens
Step-by-step explanation:
Data
Hamster 8%
Fish 12%
Dogs 23%
Sum 43%
The total population is 100,000 citizens. To find the number of citizens for each pet obtain the percentage of 100,000:
Citizens who chose hamsters are 8% of 100,000
100,000*8/100=8,000
Citizens who chose fish are 12% of 100,000
100,000*12/100=12,000
Citizens who chose dogs are 23% of 100,000
100,000*23/100=23,000
Citizens who choose hamsters, fish or dogs, is the sum of these three results
8,000+12,000+23,000=43,000
