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
Lady bird [3.3K]
3 years ago
6

Kylie explained that (–4x + 9)2 will result in a difference of squares because (–4x + 9)2 = (–4x)2 + (9)2 = 16x2 + 81. Which sta

tement best describes Kylie’s explanation?
Kylie is correct.
Kylie correctly understood that it is a difference of squares, but she did not determine the product correctly.
Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.
Kylie determined the product correctly, but she did not understand that this is a perfect square trinomial.
Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
4 0

The expression (-4x + 9)^2 cannot be equal to (-4x)^2 + 9^2 because it is actually equal to the product of two factors (3 + 2sqrt x) (3- 2 sqrt x). One cannot use obviously distributive property. Hence the answer to this problem should be C. as she did not understand both perfect square trinomial and did not determine the product 
gregori [183]3 years ago
4 0
The correct answer is: (C) <span>Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.

Explanation:
Kylie did not determine the product correctly, as the perfect-square trinomials are of the form:
</span>a^2x^2 \pm 2axb \pm b^2
<span>
and are expressed in the squared-binomial form as:
</span>(ax \pm b)^2
<span>
The correct product would be:
</span>(-4x + 9)^2 = (-4x)^2 + 2(-4)(9)x + (9)^2 = 16x^2 - 72x + 81

Hence the correct answer is that Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly (Option C).

You might be interested in
A man is 6 feet tall. To find the height of a tree, the shadow of the man and the shadow of the tree were measured. The length o
Sidana [21]

The answer is 16 ft because 6 ft tall over 4 feet 6 inches (4.5) is equal to x (tree's height) over 12 ft. You cross multiple and get 72 = 4.5x then you take 72 and divide by 4.5 to get the tree's height

\frac{6}{4.5}  =  \frac{x}{12}

3 0
3 years ago
Read 2 more answers
How do you put these in order from least to greatest? 13%, 1/3, 0.35, 0.25?
labwork [276]
13% 0.25 1/3 0.35 least to greatest
3 0
3 years ago
The figure shown is an equilateral triangle. Calculate the length of each side and give your answer in cm.
cricket20 [7]
Given at you have an equilateral triangle, all sides have the same length.

Therefore,
First side 2x-7 = Second side x+y-9 = Third side y+5

Let us look at the second and third sides for now:
x+y-9 = y+5
x = y+5 - (y-9)
x = y-y+5+9
x = 14

Then we look at equating the first and third sides:
2x-7 = y+5
y = 2x-7-5

Substitute x =14 in the equation above:
y = 2(14)-7-5
= 28-7-5
= 21-5
= 16

The length of the third side is:
y+5 = 16 +5 = 21

Given that the length of each sides are the same in an equilateral triangle, all sides have the length 21cm.
4 0
3 years ago
Mrs. epps buys 500 ballons for the hih school prom for $250. what is the cost per bag
azamat

Answer:

.50 sence per bag im sure?

Step-by-step explanation:

6 0
3 years ago
Hey guy pls help <br> explain answer <br> no links
laiz [17]

Answer:

4, 5

Step-by-step explanation:

the mode is 4 since mode is the number/s that appear most. Median is the number in the middle when the range is in order. That is 5

8 0
3 years ago
Other questions:
  • What is the answer? Someone please help
    15·2 answers
  • Deandra is doing her math homework. Out of 24 problems total, she completed the first 12 problems in 1 hour and the last 12 prob
    7·2 answers
  • A tool set is on sale for $424.15.The original price of tthe tool set was $499.00. What percent of the original price is the sal
    15·1 answer
  • A cross section is made by the intersection of a plane and a square pyramid at an angle either parallel or perpendicular to the
    12·2 answers
  • If you have the circumference of a circle. How do you find the radius?
    5·1 answer
  • Conser the quadratic function f(x) = x^2 -8x - 4 what is the value of the leading coefficient
    10·1 answer
  • +) Evaluate the expression 81 – 82.<br> 81 – 82 =
    5·2 answers
  • What is 7.504-2.3792 rounded to the hundred
    8·1 answer
  • What fraction of the game spinner is red? right to equivalent fractions.
    15·2 answers
  • Type the correct answer in the box. If necessary, use / for the fraction bar. A shaded triangular pyramid and an inverted shaded
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!