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Eduardwww [97]
4 years ago
7

....,,,...................................

Mathematics
1 answer:
jasenka [17]4 years ago
4 0
There is no question
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The difference of two times a number and five is eight more than the number
Finger [1]
Add it then x it by 3
4 0
4 years ago
Which of the following is true about an angle? A. It is dimensionless B. It can be made up of rays C. It is a location D. It is
emmainna [20.7K]

Answer:

D.

Step-by-step explanation:

let me know if i wrong

7 0
3 years ago
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A number cube is rolled 120 times. The number 4 comes up 47 times. What is the experimental probability of rolling a 4? What is
anzhelika [568]

A number cube is rolled 120 times. The number 4 comes up 47 times.

We have to determine the experimental probability of rolling a 4.

The formula to evaluate probability of an event is given by:

Probability  = \frac{Favourable outcomes}{Total outcomes}

So, Probability of rolling a 4 = \frac{ Total number of times when 4 appears}{Total number of times number cube rolled}

= \frac{47}{120}

Now, we have to find the theoretical probability of rolling a 4.

Total number of outcomes of number cube = {1,2,3,4,5,6}

Probability of rolling a 4 = \frac{1}{6}

So, Option B is the correct answer.

5 0
3 years ago
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In a true-false test containing 50 questions, a student is to be awarded 2 marks for every correct answer and -2 for every incor
BlackZzzverrR [31]

Answer:

1. 47 correct, 0 wrong and 3 unanswered

2. 48 correct, 1 wrong and 1 unanswered

Step-by-step explanation:

Given;

Total number of questions = 50

For correct answers = 2

For wrong answers = -2

Unanswered questions = 0

Yash scored 94 marks

Let c, w and u represent the number of correct, wrong and unanswered questions

2×c - 2 × w + 0×u = 94

2c -2w = 94 .....1

And;

c + w + u = 50 .....2

We have 2 equations and 3 unknowns

By observing the problem, we can see two possible solutions;

Case 1: Assuming he did not miss (get wrong) any answer;

He needs to score 47 answers right;

47 × 2 = 94

Then;

c = 47 w = 0 and u = 50 - (47+0) = 3

47 correct, 0 wrong and 3 unanswered

Case 2: Assuming he got one answer wrong;

He would need to score one more answer right compared to the first case;

(47+1) × 2 - 1 × 2 = 96 - 2 = 94

c = 47+1 = 48

w = 1

u = 50 - (48+1) = 1

So he need to score 48 correct answers, 1 wrong answer and 1 unanswered.

3 0
3 years ago
Simplify:
Leona [35]

Answer:

4

Step-by-step explanation:

\frac{ {6}^{2} }{1 + 8}  =  \frac{36}{9}  = 4

7 0
3 years ago
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