MATHEMATICS HIGH SCHOOL

N2 = 39


HELP YALL ILL GIVE BRAINLY

Answers

Answer 1
Answer:

Answer: 78

Step-by-step explanation: multiply 39 by 2
Answer 2
Answer: The answer to this question is 78

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For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3?A. 3/7

B. 7/3

C. 10

D. 21

Answers

Answer:

  D.  21

Step-by-step explanation:

The equation tells you xy = k. Substituting the given values, you get ...

  7·3 = k

  21 = k

Answer:

D) 21

Step-by-step explanation:

The given inverse variation equation is x.y = k, where k is the constant of proportionality.

Given: x = 7 and y = 3.

We need to find the constant variation, k.

To find the constant variation, k, plug in x = 7 and y = 3 in the given equation and simplify.

k = 7*3

k = 21.

Therefore, the constant of variation k = 21.

Answer is D) 21.

5x+3y=39
x+y=3

*ELIMINATION METHOD *

Answers

5x+3y=39
x+y=3
we will eliminate the y terms first
multiply bottom equation by -3
-3x-3y=-9
add this to the first equation
5x-3x+3y-3y=39-9
2x+0=30
divide both sdies by 2
x=15

subsitute into second equation
x+y=3
15+y=3
subtract 15 from both sdies
y=-12

x=15
y=-12

What type of solutions do the methods for solving systems of equations find and how does this relate to setting the equations equal to each other?

Answers

A system of equations is a set of two or more equations that share two or more unknowns. The solutions to a system of equations are all the values that make all of the equations true, or the points where the graphs of the equations intersect. We can solve a system of linear equations through graphing, substitution and linear combination. Systems of nonlinear functions, such as quadratic or exponential equations, can be handled with the same techniques.

Final answer:

Methods to solve systems of equations typically find the values of variables that satisfy all equations in the system, relating this to setting equations equal to each other. Common methods include substitution, elimination, and graphing for linear equations, and factoring, using the quadratic formula, or completing the square for quadratic functions.

Explanation:

Methods for solving systems of equations often result in finding the values of variables that satisfy all equations in the system simultaneously. This is directly related to setting the equations equal to each other because when we equate two or more equations, we are essentially looking for their common solutions or intersection points. For instance, consider two equations y = b + mx and y = ax^2 + bx + c, linear and quadratic respectively. In order to ascertain their intersection points or common solutions, you would have to set them equal to each other, thus leading to a new equation, ax^2 + bx + c = b + mx.

The process of solving systems of equations underlies various natural phenomena and engineering processes; knowing the methods to handle these equations is crucial. For linear equations, common methods include substitution, elimination, and graphing. For quadratic functions, solutions can often be found using factoring, using the quadratic formula, or, if necessary, completing the square.

In the context of real-world applications, understanding how systems of equations function can play a part in everything from kinematic problem-solving to interpreting rates of change in scientific or technological processes. Such knowledge, then, is indispensable to anyone seeking to manage these processes effectively.

Learn more about Systems of Equations here:

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125% of what number is 0.08?

Answers

Answer:

0.06

Step-by-step explanation:

125% × ? = 0.08

? =

0.08 ÷ 125% =

0.08 ÷ (125 ÷ 100) =

(100 × 0.08) ÷ 125 =

8 ÷ 125 =

0.064 ≈

Can you please help me with this question.

Answers

The answer is B
Hope this helped
The answer is "B". You have 20 coins and d represents the amount of dimes and q, the amount of quarters. Therefore, q+d = 20. Also the value of dimes is equal to .1 times the number of dimes. Value of quarters is equal to .25 times the amount of quarters. Therefore, .1d + .25q = 4.25

What is the elapsed time between 2:16 am to 8:10pm

Answers

9:44+8:10 = 17.54


Answer : 17 hours and 54 minutes


If you have questions please let me know


I hope that's help !
The elapsed time between 2:16 am to 8:10pm is 5 hours and 44 minutes.
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