The equation is 200+ 5s=x
x= how much she makes every week
Answer:
500/31.25=16
Step-by-step explanation:
The school bought 16 calculators
Answer:
-12.5%
Step-by-step explanation:
The percentage change in your time can be computed using ...
pct change = ((new value)/(old value) -1) × 100%
= (28/32 -1) × 100%
= (0.875 -1) × 100% = -12.5%
The time to finish level 2 decreased by 12.5%.
The unit rate of road construction is 2 miles per day.
Step-by-step explanation:
Given,
In
days
miles road is constructed.
To find
The rate of road constructed per day
Method
We will apply unitary method to solve it.
Now,
In
days
miles road is constructed.
In 1 day the road will be constructed =
÷
miles
= 2 miles
The right answer is Option A:![x=\frac{rs-t}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7Brs-t%7D%7B2%7D)
Step-by-step explanation:
Given expression is;
![s=\frac{2x+t}{r}](https://tex.z-dn.net/?f=s%3D%5Cfrac%7B2x%2Bt%7D%7Br%7D)
We will solve this expression for x, therefore,
Multiplying both sides by r
![r*s=\frac{2x+t}{r}*r\\rs=2x+t](https://tex.z-dn.net/?f=r%2As%3D%5Cfrac%7B2x%2Bt%7D%7Br%7D%2Ar%5C%5Crs%3D2x%2Bt)
Subtracting t from both sides
![rs-t=2x+t-t\\rs-t=2x\\2x=rs-t](https://tex.z-dn.net/?f=rs-t%3D2x%2Bt-t%5C%5Crs-t%3D2x%5C%5C2x%3Drs-t)
Dividing both sides by 2
![\frac{2x}{2}=\frac{rs-t}{2}\\x=\frac{rs-t}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B2x%7D%7B2%7D%3D%5Cfrac%7Brs-t%7D%7B2%7D%5C%5Cx%3D%5Cfrac%7Brs-t%7D%7B2%7D)
The right answer is Option A:![x=\frac{rs-t}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7Brs-t%7D%7B2%7D)
Keywords: subtraction, division
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