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Nutka1998 [239]
4 years ago
5

47. A percent is a comparison of a number to 100 using what operation?

Mathematics
1 answer:
Greeley [361]4 years ago
8 0
Usually to find the percent of a number you put that number over 100 so i think it would be division
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Find the solution of the inequality
Salsk061 [2.6K]

Answer:

option D

x≥3

Step-by-step explanation:

Given in the question an inequality

−4x + 2 ≤ −10

rearrange x terms to the left and constant to the right

-4x  ≤ −10 - 2

-4x  ≤ -12

cancel - on both sides, due to sign change inequality will also be change

 4x ≥ 12

  x ≥ 12/4

  x ≥ 3

So, the solution of the inequality is x ≥ 3, x is greater than or equal to 3.

7 0
3 years ago
Read 2 more answers
Simplify 6(3x - 5) + 2(3x -5)
Studentka2010 [4]
24x-70

1. Distribute aka mulitply the numbers inside the parenthesis by the numbers to the left of them.

2. Stack them to add them:

18x-30
+6x-70
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24x-70
8 0
4 years ago
A rocket is launched into the air and follows the path, h (t) = -3 * t^2 + 12 * t
DanielleElmas [232]

check the picture below.


so, the rocket will come back to the ground when h(t) = 0, thus


\bf h(t)=-3t^2+12t\implies \stackrel{h(t)}{0}=-3t^2+12t\implies 0=-3t(t-4)\\\\[-0.35em]~\dotfill\\\\0=-3t\implies 0=t\impliedby \textit{0 seconds when it took off from the ground}\\\\[-0.35em]~\dotfill\\\\0=t-4\implies 4=t\impliedby \textit{4 seconds later, it came back down}

8 0
4 years ago
Amber and her two friends shared 1/2 of a pepperoni pizza. if they share the pizza equally what fraction of the pizza will each
AnnyKZ [126]

Answer:

They each will get 1/3

Step-by-step explanation:

4 0
3 years ago
In a lottery game a player wins $1,000,000 with probability 0.0000005, wins $200,000 with probability0.000002, and wins $30,000
MariettaO [177]

Answer:

X_1 = 1000000 , P(X_1)= 0.0000005

X_2 = 200000 , P(X_2)= 0.000002

X_3 = 30000 , P(X_3)= 0.00001

X_4 = -2, P(X_4) = 1-0.0000005-0.000002-0.00001= 0.9999875

And then replacing we have this for the expected value:

E(X) = 1000000*0.0000005 +200000*0.000002+30000*0.00001 2*0.9999875

And after do the math we got:

E(X) = -0.79998

And then the expected value for this game is -0.79998 a negative result means NOT a win.

Step-by-step explanation:

For this case we can define the random variable X as the amount that we can win. We can find the expected value with the following formula:

E(X) = \sum_{i=1}^n X_i P(X_i)

And we have the following probabilities and possible values given:

X_1 = 1000000 , P(X_1)= 0.0000005

X_2 = 200000 , P(X_2)= 0.000002

X_3 = 30000 , P(X_3)= 0.00001

X_4 = -2, P(X_4) = 1-0.0000005-0.000002-0.00001= 0.9999875

And then replacing we have this for the expected value:

E(X) = 1000000*0.0000005 +200000*0.000002+30000*0.00001 2*0.9999875

And after do the math we got:

E(X) = -0.79998

And then the expected value for this game is -0.79998 a negative result means NOT a win.

7 0
3 years ago
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