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
Leokris [45]
3 years ago
7

When asked to factor the x^2-121 a student gives the answer (x-11)(x-11) what is wron with this answer?

Mathematics
2 answers:
Art [367]3 years ago
7 0

Given expression is x² - 121

This is called Difference of Squared terms, we have a formula that is given as :-

a² - b² = (a - b) · (a + b)

Now using the above formula in the given expression, we get :-

x² - 121

x² - (11)²

here a = x and b = 11

x² - (11)² = (x - 11) · (x + 11)

but it says that student gave the answer as (x - 11) · (x - 11).

So, student's answer should be (x - 11) · (x + 11) instead of product of two (x - 11) terms.

Akimi4 [234]3 years ago
3 0

Answer:

one minus sign should be a plus sign

Step-by-step explanation:

You might be interested in
what is 372x19+89 WANT FREE POINTS? COME HERE SHHHH! I HAVE TO ASK A QUESTION SO IT DOESNT GET DELETED! LET ME KNOW IF YOU WANT
soldi70 [24.7K]

Answer:

7157

Step-by-step explanation:

Answer is 7157

3 0
3 years ago
Read 2 more answers
PLS HELP TIMED QUIZ The size of a television screen is given as the length of the diagonal. If a television is advertised as hav
grin007 [14]

Answer:

D.24

Pythagorean states:

hypotenuse^2 = side1^2 + side2^2

30^2 = 18^2 + side2^2

side2^2 = 30^2 - 18^2

side2^2 = 900 - 324

side2^2 = 576

side2 = sqr root 576

side2 = 24

Source: http://www.1728.org/pythgorn.htm

Step-by-step explanation:

5 0
3 years ago
Help me.................
hodyreva [135]
I think it would be letter D
4 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
Natalija [7]

Answer:  C & D

<u>Step-by-step explanation:</u>

A binomial experiment must satisfy ALL four of the following:

  1.  A fixed number of trials
  2.  Each trial is independent of the others
  3.  There are only two outcomes (Success & Fail)
  4.  The probability of each outcome remains constant from trial to trial.

A) When the spinner is spun three times, X is the sum of the numbers the spinner lands on.

  → #3 is not satisfied  <em>(#4 is also not satisfied)</em>

B) When the spinner is spun multiple times ...

    → #1 is not satisfied

C)  When the spinner is spun four times, X is the number of times the spinner does not land on an odd number.

    → Satisfies ALL FOUR

  1.  A fixed number of trials = 4
  2.  Each trial is independent of the others = each spin is separate
  3.  There are only two outcomes = Not Odd & Odd
  4.  The probability of each outcome remains constant from trial to trial = P(X = not odd) = 0.50 for each spin

D) When the spinner is spun five times, X is the number of times the spinner lands on 1.

   → Satisfies ALL FOUR

  1.  A fixed number of trials = 5
  2.  Each trial is independent of the others = each spin is separate
  3.  There are only two outcomes = 1 & Not 1
  4.  The probability of each outcome remains constant from trial to trial = P(X = 1) = 0.17 for each spin

3 0
3 years ago
Michael has two more apples than Ann does. Together, Michael and Ann have no more than 9 apples. If Ann has at least one apple,
fiasKO [112]

Answer:

ann has 1 apple and Michael has 8 apples

6 0
3 years ago
Other questions:
  • Find the measure of x.<br><br> X = -1<br> X = 9<br> X = 13
    8·1 answer
  • A new car has a sticker price of 23950 while the invoice price paid on it was 19750what is tge percentage markup
    11·2 answers
  • How do u get 55 from 3 7 12 2
    10·1 answer
  • You receive a gift card for trading cards from a local store. The function d=20-1.95c represents the remaining dollars d on the
    12·1 answer
  • What is the slope of the line passing through the points (−3, 4) and (4, −1)?
    7·2 answers
  • Find the nth term:
    8·2 answers
  • Clean123 Inc. is preparing its balance sheet. It has $59,000 in accounts receivable, $32,000 in accounts payable, $41,000 in not
    8·1 answer
  • List the following numbers in ascending order <br><br> √7, 15/5, -4, 2
    13·1 answer
  • The astronauts of Expedition 28 on the international Space Station spend 15 weeks in space. Convert the time to minutes.
    8·1 answer
  • (Elimination Strategies) Which of these strategies would eliminate a variable in the system of equations? x - 2y = 115x + 3y = -
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!