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podryga [215]
2 years ago
6

The work of a student to solve a set of equations is shown: Equation A: y = 4 − 2z Equation B: 4y = 2 − 4z Step 1: −4(y) = −4(4

− 2z) [Equation A is multiplied by −4.] 4y = 2 − 4z [Equation B] Step 2: −4y = 4 − 2z [Equation A in Step 1 is simplified.] 4y = 2 − 4z [Equation B] Step 3: 0 = 6 − 6z [Equations in Step 2 are added.] Step 4: 6z = 6 Step 5: z = 1 In which step did the student first make an error? (5 points)​
Mathematics
2 answers:
mina [271]2 years ago
8 0

Answer:

step 2.

Step-by-step explanation:

dem82 [27]2 years ago
4 0

Answer:

The student made the first mistake in step 2.

Step-by-step explanation:

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Suppose that the objective function coefficient for product C increases by $8. What impact will this have on the current values
maw [93]

When the objective function coefficient for the product increases by $8, the impact on the current values of the optimal solution is that the current solution will change.

<h3>What is an objective function?</h3>

An objective function simply means the function whose value is to be either maximized or minimized over the alternatives.

In this case, when the objective function coefficient for the product increases by $8, the impact on the current values of the optimal solution is that the current solution will change. The change is due to the varied objectives.

Learn more about objective function on:

brainly.com/question/26100401

6 0
2 years ago
Easy math please help
insens350 [35]

1) False

Adjacent angles must share a common side/ray.

2) B and D

Adjacent angles are those that are directly next to each other and share a common side.

3) C

Angles 1 and 2 are congruent. Angles 3 and 4 are congruent. Both of these pairs have angles that are opposite each other.

4) B

Angles 1 and 2 add up to 180. Angles 3 and 4 add up to 180. Both of these pairs of angles are supplementary.

5) A

These angles are directly next to each other and share a common side.

Hope this helps!! :)

4 0
2 years ago
Use substitution to write an equivalent quadiatic equation<br> ( 3x^2)^2+7(3x +2) -8=0
mezya [45]

Answer:

9x^4+21x+6=0

Step-by-step explanation:

( 3x^2)^2+7(3x +2) -8=0

((3^2)*(x^2)^2)+(7*3x)+(7*2)-8=0

9(x^4)+21x+14-8=0

9x^4+21x+6=0

7 0
3 years ago
Use the net to find the surface area of the regular pyramid.<br><br> plz, help I'm stuck.
Zepler [3.9K]

Answer:

178.3 mm²

Step-by-step explanation:

Surface area = Base area + 3 x side triangles area

Sₐ = 43.3 + 3 x (1/2 x (10 x 9)) = 43.3 + (3 x 45) = 178.3

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3 years ago
The boiling point of water is 212 degrees Fahrenheit. Can this thermometer be used to record the temperature of a boiling pot of
Salsk061 [2.6K]
Yes because the thermometer reads temperatures higher than 2.12 degrees
4 0
3 years ago
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