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3 years ago

15

A number cube is rolled 25 times. A number less than four comes up 20 times. What is the experimental probability that a number

less than four is rolled

1 answer:

laiz [17]3 years ago

4 0

It would be 20 because the highest number is 25

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4 years ago

−2(x+1/4)+1=5 PLEASE HELP

PilotLPTM [1.2K]

Answer: x=−9/4

Step-by-step explanation:

Let's solve your equation step-by-step.

−2(x+14)+1=5

Step 1: Simplify both sides of the equation.

−2(x+14)+1=5(−2)(x)+(−2)(14)+1=5(Distribute)−2x+

−1

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(−2x)+(

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Step 2: Subtract 1/2 from both sides.

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Step 3: Divide both sides by -2.

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podryga [215]

Solve for the x-max or h :\
$-b/(2a)=-8/(2*-2)=2=k$
plug it in to equation to get k:/
$y(2)=-2(2)^2+8(2)+3$
-8+16+3=11=k
$y=a(x-2)^2+11
$
solve for a by pluging (0,0)
then a= -11/4
$y=-11/4(x-2)^2+11$

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3 years ago

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