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Nitella [24]
3 years ago
10

The score on a trivia game is obtained by subtracting the number of incorrect answer from twice the number of correct answer. If

a player answered 50 total question and obtained a score of 40 , how many questions did the player answer correctly?
Mathematics
1 answer:
brilliants [131]3 years ago
3 0

Answer:

The player answer correctly 30 questions

Step-by-step explanation:

First we have to develop the information that gives us as 2 equations

x = correct answer

y = incorrect answer

z = score = 40

h = total answer = 50

2x - y = z               x + y = h

2x - y = 40             x + y = 50

we clear the x of one equation and replace the value of x in the other equation

x = 50 - y

2x - y = 40

2(50 - y) - y = 40

100 - 2y - y = 40

-3y = 40 -100

y = -60/-3

y = 20

x = 50 - y

x = 50 - 20

x = 30

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You're pretty sure that your candidate for class president has about 6565​% of the votes in the entire school. But​ you're worri
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Answer:

You're pretty sure that your candidate for class president has about 55% of the votes in the entire school. but you're worried that only 100 students will show up to vote. how often will the underdog (the one with 45% support) win? to find out, you set up a simulation.

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Step-by-step explanation:

Part A:

A component is one voter's voting. An outcome is a vote in favor of our candidate.

Since there are 100 voters, we can stimulate the component by using two random digits from 00 - 99, where the digits 00 - 64 represents a vote for our candidate and the digits 65 - 99 represents a vote for the under dog.

Part B:

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4 0
3 years ago
Pls help me with this question
ankoles [38]

Answer:

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8 0
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Number 8 please help
Mila [183]

Answer:

the children gain 1600$ each

and the adult gains 4800$

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Total Amount = 10,000

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