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Take that certain number we are looking for as 'n'
38% ⇒ 0.38
0.38n = 152
Divide by 0.38
0.38n = 152
/0.38 /0.38
n = 400
So 38% of 400 is 152.
Answer:
24
Step-by-step explanation:
30 secs = 0.5 min
thus 84 / 3.5 min = 168 / 7 = 24
![f(x)=2x^2-x](https://tex.z-dn.net/?f=f%28x%29%3D2x%5E2-x)
Substitute the value of x = -3 to the equation:
![f(-3)=2(-3)^2-(-3)=2(9)+3=18+3=21](https://tex.z-dn.net/?f=f%28-3%29%3D2%28-3%29%5E2-%28-3%29%3D2%289%29%2B3%3D18%2B3%3D21)
5 to 8 right or there more