1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
larisa86 [58]
3 years ago
12

Susu is solving the quadratic equation 4x2 – 8x – 13 = 0 by completing the square. Her first four steps are shown in the table.

In which step did Susu first make an error? Step 1 Step 2 Step 3 Step 4

Mathematics
2 answers:
KengaRu [80]3 years ago
8 0

Answer:

Step 2

Step-by-step explanation:

Susu is solving the quadratic equation 4x^2 - 8x - 13 = 0 by completing the square

To apply completing the square method we need to get x^2 alone

Susu added 13 on both sides . So step 1 is correct

When we factor out 4, we divide both terms by 4

4(\frac{4x^2}{4} -\frac{8x}{2} )=13

4(x^2-2x)=13

Susu forgot to divide 8 by 4

So , error in step 2

anzhelika [568]3 years ago
6 0

Answer:

Step 3

Step-by-step explanation:

when solving by completing the square you are supposed to do (b/2)^2 and then add that to both sides.

In your example (-8/2)^2=16

You are supposed to add sixteen to both sides not 64

Susu forgot to divide 8 by 2 before she raised it to the to the second powerm that is why she got 64, which is incorrect.

You might be interested in
What are the answers to ther two questions??
Vlad1618 [11]
the answer is the third option, starting with degree 11.
6 0
3 years ago
Read 2 more answers
What is the remainder when 18,049 is divided by 14
kotykmax [81]

Answer:

3

Step-by-step explanation:

18,049 / 14 = 1289 and 3/14

So the remainder = 3

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

7 0
3 years ago
Read 2 more answers
Let f(x) = x2 − 3x − 7. Find f(−3).
MrRa [10]
Answer is:
f(-3) = 11
5 0
3 years ago
Read 2 more answers
8. Daren and Josh are pretty good free throw shooters. Daren makes 75% of the
BaLLatris [955]

Answer:

B) Approximately normal, with mean -0.05 and standard deviation 0.083

Step-by-step explanation:

The correct answer is (B). The shape is approximately normal since the expected number of makes and misses for both Daren and Josh are all greater than 10.

5 0
3 years ago
Are these right?<br> If not can you please tell me how to do it!!
fenix001 [56]
Yes it's good! Nice Job!
5 0
3 years ago
Other questions:
  • Jamie needs to determine the distance across a river. She selects a rock, R, on the opposite river bank. She finds a tree, T, on
    6·1 answer
  • A local farm has raised $3,300 from their annual maple syrup festival. The owner of the farm decided to invest this money into a
    6·1 answer
  • A professional baseball player signs a contract with a beginning salary of $3,000,000 for the first year and an annual increase
    13·1 answer
  • Is the number 8.25 a rational number or an irrational number
    10·2 answers
  • Help asap plzzz I NEED HELP !!!!!!!!
    6·1 answer
  • What is the length of line AB
    7·1 answer
  • 3 gal 2 c=​___ fl oz. PLEASE HELP!!!
    6·1 answer
  • Carey earns $9.75 working part time on weekends. The table below shows the amount, a, Carey earns for working h hours.
    5·1 answer
  • Find three numbers between –0.55 and –0.54
    15·1 answer
  • Rena`s rowboat drifts 23 feet away from the shore, followed by another 9 more feet. What equation represents Rena`s rowboat posi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!