allieeastridge

17.06.2021 • 

Mathematics

The coordinate grid shows the plot of four equations: A coordinate grid is shown from negative 12 to positive 12 on the x axis and also on the y axis. Line A passes through the ordered pairs negative 3, 4 and 9, negative 2. Line B passes through the ordered pairs 2, 8 and 8, negative 8. Line C passes through the ordered pairs negative 3, negative 4 and 4, 6. Line D passes through the points 2, negative 2 and 5 and 6. Which set of equations has (3, 5) as its solution? A and D C and D A and C B and C Question 18(Multiple Choice Worth 1 points) (08.05 HC) The work of a student to solve a set of equations is shown: Equation A: y = 16 – 2z Equation B: 7y = 2 – 4z Step 1: –7(y) = –7(16 – 2z) [Equation A is multiplied by –7.] 7y = 2 – 4z [Equation B] Step 2: –7y = 16 – 2z [Equation A in Step 1 is simplified.] 7y = 2 – 4z [Equation B] Step 3: 0 = 18 – 6z [Equations in Step 2 are added.] Step 4: 6z = 18 Step 5: z = 3 In which step did the student first make an error? Step 3 Step 4 Step 1 Step 2 Question 19(Multiple Choice Worth 1 points) (08.01 MC) Lines C and D are represented by the equations given below: Line C: y = x + 8 Line D: y = 3x + 2 Which of these shows the solution to the system of equations and explains why? (3, 11), because the point does not lie on any axis (3, 11), because both lines pass through this point (4, 14), because one of the lines passes through this point (4, 14), because the point lies between the two axes You must check the box below prior to submitting your exam! Check this box to indicate you are ready to submit your exam FDK61.12

Ответ:

ynclankaedon

10.10.2020

Mathematics

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Some definitions:

Sum - the result of adding values together

Term - a single number or variable (includes variables multiplied by numbers)

Factor - a number or variable that divides another number or expression evenly

Quotient - the result of dividing values by one another

Coefficient - a numerical or constant value often in front of a variable

In your equation:

Sum - (5x + 1)

5x and 1 are being added together, although we do not know the sum exactly, we know that the sum is equal to the value of 5 times x plus 1.

Term - (5x, 1, 3y)

All terms given above are applicable.

Factor - (9)

9 has been taken out of the expression that it is now being multiplied, which shows that it was factored out of that expression

Quotient - (9(5x + 1) / 3y)

The value of 9(5x + 1) is being divided by 3y. Though we do not know the quotient exactly, we know that the quotient is equal to the values given.

Coefficient - (5, 3)

Both 5 and 3 are numbers in front of variables.

Hope this helps!! :)

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