3 years ago

A class of 25 students shares a class set of 100 markers.on a day with 5 absent whick statement is true

Mathematics

1 answer:

Vinvika [58]3 years ago

7 0

IDK. You should add an explanation

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Geometry homework I really don’t understand this so can someone please help me.

rewona [7]

1. SSS
2.SAS
3.AAS
4.ASA
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3 years ago

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Pls plsss help with math, it’s easyyy!! explanation needed!!

zimovet [89]

Answer:

C. x = -12 and x = 2

Step-by-step explanation:

-x²-10x+24=0 Original equation

x²+10x-24=0 Divide everything by -1

(x+12)(x-2)=0 Factor it out

x=-12,2 Solve so that the inside of the parentheses equals 0

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3 years ago

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What is the slope of the line with the equation 8x + 3y = 9?

Sidana [21]

8x+3y=9
-8x. -8x
3y = -8x+9
3y/3 = (-8x+9)/3
y = -8/3x +3
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3 years ago

Bucket A has 5 1/2 gallons of water, but is draining at a rate of 3/4 gallons per hour. Bucket B has 2 1/4 gallons of water, but

Ivenika [448]

Answer:

9/0

Step-by-step explanation:

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3 years ago

A student answers a multiple-choice examination question that offers four possible answers. Suppose the probability that the stu

Nitella [24]

Answer: 0.9730

Step-by-step explanation:

Let A be the event of the answer being correct and B be the event of the knew the answer.

Given: $P(A)=0.9$

$P(A^c)=0.1$

$P(B|A^{C})=0.25$

If it is given that the answer is correct , then the probability that he guess the answer $P(B|A)= 1$

By Bayes theorem , we have

$P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(C|A^c)P(A^c)}$

$=\dfrac{(1)(0.9)}{(1))(0.9)+(0.25)(0.1)}\\\\=0.972972972973\approx0.9730$

Hence, the student correctly answers a question, the probability that the student really knew the correct answer is 0.9730.

7 0

3 years ago