Answer:
The numbers are 7, 4 and 1
Step-by-step explanation:
Let the numbers =x, y, z.
The sum of all three numbers is 12, x+y+z=12--------i
The sum of twice the first number, 4 times the second number, and 5 times the third number is 35, 2x+4y+5z=35-------ii
The difference between 8 times the first number and the second number is 52, 8x-y=52---------iii
Now, from (i),z =1-x-y--------iv
substitute (iv) in (ii),
2x+4y+5(12-x-y)=35
2x+4y+60-5x-5y=35
collect like terms
-3x-y=-25
that is, 3x-y=25--------v
solving (iii) and (v) simultaneously (add iii and v), we have
11x=77
divide both sides by 11 to obtain x=7
Put x=7 in (v)
3(7)+y=25
21+y=25
implies y=25-21=4
put x=7 and y=4 in (iv)
z=12-7-4=1
Hence, the numbers are 7, 4 and 1.
340 people would renew their membership if the gym had 400 members
The gym's claim is not accurate, because the prediction should be 340 people instead of 330
With 400 members, we can predict how many will renew their membership by multiplying 400 by 0.85:
400(0.85)
= 340
So, this would predict that 340 people would renew their membership.
The gym's claim that 330 members would renew their memberships is not accurate, because the correct prediction should be 340 people.
luhfr
x=-5
Answer: m1 = 0.5
M2= 0.375
M3 = 2.25
M4 = 3.0
M5 = 13.5
M6 = 0.285
M7 = 7.0
(20,40)-(15,30)=(5,10), m1=5/10=0.5
(18,48)-(12,32)=(6,16), m2=3/8=0.375
(72,32)-(27,12)=(45,20), m3=9/4=2.25
(60,20)-(45,15)=(15,5), m4=3.0
(243,18)-(27,2)=(216,16), m5=27/2=13.5
(24,84)-(18,63)=(6,21), m6=2/7=0.285...
(84,12)-(63,9)=(21,3), m7=7.0
