Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
Objective is to compete in a 5km road race ;
Reduction in race tone per month = 15 seconds
Rqce comes up in 3 months
Total change in race time he hopes to achieve :
1. What integer represents the change in race time Riley wants to achieve each month ; 15 seconds
2. What integer represents the number of months she will train?
She will train for 3 months ; 3 months
Write a multiplication expression that can be used to find the total change in time.
Change in race time * number of month she will train
15 seconds * 3 months = 45 seconds
Let initial race time = (t)
t - 15(month in which race comes up).
t - (15-3) = t - 45
Answer:
<h2>21% of 1 is 0.21</h2>
Step-by-step explanation:
Method 1:
![p\%=\dfrac{p}{100}\\\\21\%=\dfrac{21}{100}=0.21](https://tex.z-dn.net/?f=p%5C%25%3D%5Cdfrac%7Bp%7D%7B100%7D%5C%5C%5C%5C21%5C%25%3D%5Cdfrac%7B21%7D%7B100%7D%3D0.21)
21% of 1:
![0.21\cdot1=0.21](https://tex.z-dn.net/?f=0.21%5Ccdot1%3D0.21)
Method 2:
![\begin{array}{ccc}1&-&100\%\\x&-&21\%\end{array}\right\qquad\text{cross multiply}\\\\100x=(1)(21)\qquad\text{divide both sides by 100}\\\\x=\dfrac{21}{100}\\\\x=0.21](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Bccc%7D1%26-%26100%5C%25%5C%5Cx%26-%2621%5C%25%5Cend%7Barray%7D%5Cright%5Cqquad%5Ctext%7Bcross%20multiply%7D%5C%5C%5C%5C100x%3D%281%29%2821%29%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%20100%7D%5C%5C%5C%5Cx%3D%5Cdfrac%7B21%7D%7B100%7D%5C%5C%5C%5Cx%3D0.21)
Answer:
A) 60
B) 0
C) 150
Step-by-step explanation:
A) P(green) = ⅕
⅕ × 300 = 60
B) since the purple never occured
P(purple) = 0
C) 1000 × (45/300)
150
So, this is a rate problem, so the forumla we would get is
2.5g=30
(Note this is not one of the choices), so if we look, there is an equivelent equation.
If we divide both sides by g we get
2.5=30/g
B is the correct answer
So what u do is multiply let me attach something