52.5 divide by 121 is .43, so that means each person represents .43% of the 7th grade population. so by multiplying 231 by .43 you get 100%. the number of students in 7th grade is 231
Answer: A. 2.5v+5v < 5v
Step-by-step explanation:
represents the piece of information which states that renting videos is $2.50 per game and the 2.5 is multiplied by the number of games v. Five is added as a monthly fee therefore the left side of the equation should be 2.5v+5.
For store T:
There is no monthly fee and so the renting fee of $5 per game is represented as 5v.
In conclusion, if the inequality sign in the middle is less than (<) then the left hand side of the inequality sign should represent store S and the right hand side should represent store T in order to answer the question. This makes option A the only correct option.
1,R 2,R 3,R 4,R 1,B 2,B 3,B 4,B 1,Y 2,Y, 3,Y
Answer:
x=7−√10 or x=7+√10
Step-by-step explanation:
−5(x−7)2+30=−20
Step 1: Simplify both sides of the equation.
−5x2+70x−215=−20
Step 2: Subtract -20 from both sides.
−5x2+70x−215−(−20)=−20−(−20)
−5x2+70x−195=0
For this equation: a=-5, b=70, c=-195
−5x2+70x+−195=0
Step 3: Use quadratic formula with a=-5, b=70, c=-195.
x=
−b±√b2−4ac
2a
x=
−(70)±√(70)2−4(−5)(−195)
2(−5)
x=
−70±√1000
−10
x=7−√10 or x=7+√10
