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natka813 [3]
3 years ago
6

Find the value of the expression

Mathematics
1 answer:
cestrela7 [59]3 years ago
4 0
The answer to the question is -343i
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Find the solution to the following system of equations write as an ordered pair
Vinvika [58]
Answer: (4,8)

First you have to solve for Y in either equation. I solved for Y in the second equation and my new equation was y=12-x.

Then you plug this new equation into the equation you did not touch. It will become 3x+ (12-x)=20.

Next you solve this equation for X which would be 4.

Lastly you plug in 4 in either equation. I plugged it in the first equation and it became 3(4)+y=20

I hope this helps some :)
7 0
3 years ago
What’s the correct formula??
r-ruslan [8.4K]
I think the answer is A
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3 0
3 years ago
Dalvin answered 51 questions correctly on his multiple choice science final and earned a grade of 85%. How many total questions
Leona [35]

Answer:

60

Step-by-step explanation:

Divide the number of questions answered correctly by his percentage

51 / 85 = 0.6

Now multiply that answer by 100 to see how many questions are on the quiz

0.6 x 100 = 60

Check your work by dividing that number by the number he answered correctly

51 / 60 = 0.85

4 0
3 years ago
What is the slope of the ramp shown in the diagram below?
bixtya [17]

Answer:

Step-by-step explanation:

slope = \frac{vertical}{horizontal} = - \frac{3}{10} → A

The slope is negative as the ramp slopes down from left to right

3 0
3 years ago
Read 2 more answers
Which equation could represent a linear combination of the system?
Ghella [55]

The equation that could represent a linear combination of the system 2/3x + 5/2y = 15 and 4x + 15y = 12 is 0 = 26

<h3>What are linear equations?</h3>

Linear equations are equations that have constant average rates of change, slope or gradient

<h3>How to determine the linear combination to the system?</h3>

A system of linear equations is a collection of at least two linear equations.

In this case, the system of equations is given as

2/3x + 5/2y = 15

4x + 15y = 12

Multiply the first equation by 6, to eliminate the fractions.

6 * (2/3x + 5/2y = 15)

This gives

4x + 15y = 90

Subtract the equation 4x + 15y = 90 from 4x + 15y = 12

4x - 4x + 15y - 15y = 12 - 90

Evaluate the difference

0 + 0 = -78

Evaluate the sum

0 = -78

The above equation is the same equation as option (b) 0 = 26

This is so because they both represent that the system of equations have no solution

Hence, the equation that could represent a linear combination of the system is 0 = 26

Read more about system of linear equations at

brainly.com/question/14323743

#SPJ1

<u>Complete question</u>

The system of equations below has no solution.

2/3x + 5/2y = 15

4x + 15y = 12

Which equation could represent a linear combination of the system?

7 0
2 years ago
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