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Inga [223]
2 years ago
15

Use elimination to solve the following system of equations: 17x - 2y = 25,17x + 3y = 5

Mathematics
1 answer:
77julia77 [94]2 years ago
3 0

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

(1,-4)

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Describe the type of solution for the given system of linear equations.
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B

Step-by-step explanation:

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3 years ago
Between 1965 and 1980, the world population grew at an annual rate of 2%. Using the rule of 72, population is expected to double
Fiesta28 [93]

Answer:

The population is expected to double in 36 years

Step-by-step explanation:

According to the the rule of 72,

A value is doubled if the product of the annual rate and number of years is 72,

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The annual rate of interest = 2%

Let x be the time in years after 1965,

By the above statement,

The population will double if,

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Hence, the after 36 years since 1965 the population will be doubled,

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3 years ago
The owner of a rental company rents bicycles and tricycles and keeps inventory by counting seats and wheels. One day, he counts
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Answer:

2b + 3t = 60

Step-by-step explanation:

2b is the number of wheels on a bicycle

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and 60 is the total number of wheels

5 0
3 years ago
A standard pair of six-sided dice is rolled. What is the probability of rolling a sum less than 7? Express your answer as a frac
zzz [600]

Answer:

0.4167 is the probability of rolling a sum less than 7.  

Step-by-step explanation:

We are given the following in the question:

Event: A standard pair of six-sided dice is rolled

A: rolling a sum less than 7

Sample space:

{(1,1),(1,2),(1,3),(1,4),(1,5),(1,6)

(2,1),(2,2),(2,3),(2,4),(2,5),(2,6)

(3,1),(3,2),(3,3),(3,4),(3,5),(3,6)

(4,1),(4,2),(4,3),(4,4),(4,5),(4,6)

(5,1),(5,2),(5,3),(5,4),(5,5),(5,6)

(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)}

A:

{(1,1),(1,2),(1,3),(1,4),(1,5),(2,1),(2,2),(2,3),(2,4),(3,1),(3,2),(3,3),(4,1),(4,2),(5,1)}

Formula:

\text{Probability} = \displaystyle\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}

P(A) = \dfrac{15}{36} = 0.4167

0.4167 is the probability of rolling a sum less than 7.

8 0
2 years ago
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