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puteri [66]
3 years ago
14

Three fifths of a number is -24 what is the number ???

Mathematics
1 answer:
Kruka [31]3 years ago
6 0

Answer:

-40

Step-by-step explanation:

Let the number be x

3/5×X = -24

cross multiply

3x = -24×5

3x= - 120

divide by 3

3x/3 = -120/3

x = -40

the number is -40

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Pls help i am on a timer
stich3 [128]

Answer:

x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Step-by-step explanation:

Given;

x² - 2x - 1 = 0

Solve by completing the square method;

⇒ take the constant to the right hand side of the equation.

x² - 2x = 1

⇒ take half of coefficient of x = ¹/₂ x -2 = -1

⇒ square half of coefficient of x and add it to the both sides of the equation

x^2 +  (-1)^2 = 1 + (-1)^2

(x-1)^2 = 1 + 1\\\\(x-1)^2 = 2\\\\

⇒ take the square root of both sides;

x-1 = +/- \ \ \sqrt{2} \\\\x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Therefore, option B is the right solution.

3 0
2 years ago
(6+3)÷(4-5)Evaluate the following numerical expressions.
AlexFokin [52]

Answer: -9

Step-by-step explanation:

(6+3)÷(4-5)

Since 6+3 is 9 and 4-5 = -1

You do 9 divided by -1. It equals -9.

It is -9 since a positive divided by a negative number.

7 0
3 years ago
What is the probability of getting either a sum of 66 or at least one 66 in the roll of a pair of​ dice?
Sindrei [870]
So I'm hoping you mean 6, or else the probability is 0. So the possible ways of getting a sum of 6 is 1&5, 2&4, 3&3, 4&2, 5&1. There are 36 different ways of rolling the dice, so divide the 5 possible ways by 36. Then, we need to add the possibility of getting at least one 6 in the roll. It doesn't matter what the other die is, so for each die, the probability is 1/6, and for both, the probability is 2/6. Add this to the probability of getting a sum of 6, and you get your answer.
7 0
3 years ago
The length of a rectangle is 7 cm more than 4 times the width. If the perimeter of the rectangle is 44 cm, what are its dimensio
Alexxandr [17]

Answer:

3 by 19

Step-by-step explanation:

3 0
3 years ago
Evaluate 9.5s +8.7t when s= 3 and t = 4
Arturiano [62]
The answer is 63.3

9.5 * 3 + 8.7 * 4 = 63.3
3 0
3 years ago
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