Question

Can someone help me with this question? I'm stuck. I'll fan/medal and whatnot.

The work of a student trying to solve the equation 4(2x − 1) = 11 + 3x + 5 is shown below:

Step 1: 4(2x − 1) = 11 + 3x + 5
Step 2: 8x − 4 = 16 + 3x
Step 3: 8x + 3x = 16 − 4
Step 4: 11x = 24
Step 5: x = 2.18

In which step did the student first make an error and what is the correct step?

A. Step 2: 8x − 1 = 16 + 3x
B. Step 2: 8x − 8 = 6 + 3x
C. Step 3: 8x − 3x = 16 + 4
D. Step 3: 8x + 3x = 16 − 8

Answer 1

C.

Answer 2

You are meant to subtract 3x from both sides of the equation, not add. The same goes with 4. You are meant to add the 4 from both sides, not subtract.

Answer 3

Thank you very much

Answer 4

would you mind medalling me ^^ :) it was my pleasure.

Answer 5

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Answer 6

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Answer 7

Orgo II Tutorial: Tosylates, Mesylates, Triflates

Answer 8

Orgo II Tutorial: Synthesis of Alkyl Halides with PBr/SOCl2

Answer 9

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Answer 10

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Answer 11

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Answer 12

Show that

Answer 13

prove that 1/tan3x+tanx-1/cot3x+cotx=cot4x

Answer 14

A committee with members from both the House of Representatives and the Senate is called a __________.

Answer 15

A committee with members from both the House of Representatives and the Senate is called a __________.

Answer 16

Match the scenario to the type of mental health issue described.

Answer 17

Anyone looking forward to SAO's Alicization Arc? There's a speculation of around

Answer 18

https://cdn.discordapp.com/attachments/337416265201221632/492874389474246677/unknown.

Answer 19

Which of these goes in order ?

Answer 20

Which of these goes in order ?

Answer 21

one more question (god help me): 6. Design an experiment to test whether the magnetic polarity of rocks changes as you move away from the Mid-Atlantic Ridge

Answer 22

Productivity is the combination of

A. effectiveness and resources.
B. efficiency and energy.

Answer 23

The coordinates of the vertices of u25b3ABC are A(1, 1) , B(5, 1) , and C(5, 3) . The coordinates of the vertices of u25b3Au2032Bu2032Cu2032 are Au2032(u22121, u22121) , Bu2032(u22125, u22121) , and Cu2032(u22125, u22123) .

Which statement correctly describes the relationship between u25b3ABC and u25b3Au2032Bu2032Cu2032 ?

A. u25b3ABC is congruent to u25b3Au2032Bu2032Cu2032 because you can map u25b3ABC to u25b3Au2032Bu2032Cu2032 using a translation 2 units to the left and 2 units down, which is a rigid motion.

B. u25b3ABC is congruent to u25b3Au2032Bu2032Cu2032 because you can map u25b3ABC to u25b3Au2032Bu2032Cu2032 using a reflection across the y-axis, which is a rigid motion.

C. u25b3ABC is not congruent to u25b3Au2032Bu2032Cu2032 because there is no sequence of rigid motions that maps u25b3ABC to u25b3Au2032Bu2032Cu2032.

D. u25b3ABC is congruent to u25b3Au2032Bu2032Cu2032 because you can map u25b3ABC to u25b3Au2032Bu2032Cu2032 using a rotation of 180u00b0 about the origin, which is a rigid motion.

Answer 24

i need some help