Problem 4:
![\rm \frac8{11}(n-10)=64](https://tex.z-dn.net/?f=%5Crm%20%5Cfrac8%7B11%7D%28n-10%29%3D64)
multiply by 11,
8(n-10) = 64*11
divide by 8,
n-10 = 8*11
Add 10,
n = 88 + 10 = 98
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Problem 5:
-0.6(r+0.2)=1.8
Divide by -0.6,
r+0.2 = -3
subtract 0.2,
r = -3 - 0.2 = -3.2
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Problem 6:
![\rm \left(w-\frac49\right)\left(-\frac23\right)=-\frac45](https://tex.z-dn.net/?f=%5Crm%20%5Cleft%28w-%5Cfrac49%5Cright%29%5Cleft%28-%5Cfrac23%5Cright%29%3D-%5Cfrac45)
I hope this method isn't too confusing for you,
but I would multiply through by the LCM of the denominators to get rid of the fractions. LCM of 3, 9 and 5 is 45.
Multiply both sides by 45,
(45w - 20)(-30) = -36
Divide -30,
45w - 20 = 36/30
Add 20,
45w = 36/30 + 20
Divide 45 as a final step,
w = 21.2/45
Answer:
12i because we have the square root of -144, so we have 144 times -1, and we square root 144 to get 12, and the square root of -1 is i, so we have 12i.
Brainliest please?
Answer:
$118,800
Step-by-step explanation:
5 handbags for 18000 each and sold at 32% profit
1 handbag=18000*1.32=$23,760
23,760*5=$118,800
Answer:
x
21
Step-by-step explanation:
(-2/3)x+13≥ -1
(-2/3)x≥ -14 (I subtracted by 13 on both sides)
x
-14*(-3/2) (I divided by -2/3 on both sides)
x
21
Answer:
3.704 Hours
Step-by-step explanation:
This problem can be solved by using concept of relative speed. relative speed is speed of one body in comparison of other.
If two bodies are moving in same direction their relative speed is calculated by taking difference of each other speed.
If two bodies are moving in opposite direction their relative speed is calculated by taking sum of each other speed.
In the problem stated two bodies are moving in north and south direction, hence they are moving in opposite direction, thus their speed can be taken sum of individual speed.
which is
(60+65) Km/Hr = 135 km/hour
Now given in question distance between two bodies is 500 KM
and relative speed = 135 km/hour
using formula of speed distance and time
Time = distance / speed = 500/135 = 3.704 Hours
Therefore it will take 3.704 Hours for both of the trains to be 500 km apart.