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
Angelina_Jolie [31]
2 years ago
13

Kylie explained that (negative 4 x 9) squared will result in a difference of squares because (negative 4 x 9) squared = (negativ

e 4 x) squared (9) squared = 16 x squared 81. Which statement best describes Kylie’s explanation?.
Mathematics
1 answer:
JulijaS [17]2 years ago
3 0

A perfect square trinomial is the result in algebraic form which is obtained by solving the squared binomial expression. Kylie did not understand that this is a perfect square trinomial and she did not determine the product correctly. Thus the option C is the correct option.

Given information-

The expression for the given problem is,

(-4x+9)^2

<h3>Perfect square trinomial</h3>

A perfect square trinomial is the result in algebraic form which is obtained by solving the squared binomial expression.

The perfect square trinomial can be given as,

ax^2+bx+c

The given expression can be solved as,

(-4x+9)^2=(-4x+9)\times(-4x+9)\\(-4x+9)^2=-4x(-4x+9)+9(-4x+9)\\(-4x+9)^2=16x^2-36x-36x+81\\(-4x+9)^2=16x^2-72x+81

Hence Kylie did not understand that this is a perfect square trinomial and she did not determine the product correctly. Thus the option C is the correct option.

Learn more about the perfect square trinomial here;

brainly.com/question/88561

You might be interested in
The supplement of an angle is 50 less than 3 times its complement, find the measure of the angle
Lelechka [254]

Answer:

20^{\circ}.

Step-by-step explanation:

Two angles are supplements of one another if their sum is 180^{\circ}.

Two angles are complements of one another if their sum is 90^{\circ}.

Let x^{\circ} be the measure of the angle in question.

The supplement of this angle would be (180 - x)^{\circ}.

The complement of this angle would be (90 - x)^{\circ}.

According to the question:

(180 - x) + 50 = 3\, (90 - x).

Solve this equation for x:

x = 20.

Thus, this angle would measure should 20^{\circ}.

The supplement of this angle would measure (180 - 20)^{\circ} = 160^{\circ}. The complement of this angle would measure (90 - 20)^{\circ} = 70^{\circ}.

Three times the complement of this angle would be 3 \times 70^{\circ} = 210^{\circ}, which is indeed 50^{\circ} greater than the supplement of this angle.

8 0
3 years ago
Marvin used the money he received from
Kay [80]

Answer:

<em>Correct choice: C. $320</em>

Step-by-step explanation:

<u>Simple Interest</u>

Definition: Interest calculated on the original principal only of a loan or on the balance of an account.

Unlike compound interest where the interest earned in the compounding periods is added to the new principal, simple interest only considers the principal to calculate the interest.

The interest earned is calculated as follows:

I=P.r.t

Where:

I = Interest

P = initial principal balance

r = interest rate

t = time

Marving is saving money in a savings account with a simple interest rate of r=7.5%=0.075. It's known that after t=12 years, the account had earned $288 interest. Substituting in the formula:

288 = P*0.075*12

Calculating:

288 = 0.9P

Dividing by 0.9:

P = $320

Correct choice: C. $320

7 0
3 years ago
11+4 (x+7) 2nd power when x=2
monitta
<span>11+4 (x+7)^2
Substitue 2 for x
</span><span>11+4 (2+7)^2
Multiply the numbers inside of the parenthesis by the exponent
11+4 (4+49)
Add 4 to 59
11+4 (54)
Add 4 to 11
15(54)
Multiply
Final Answer: 810</span>
6 0
3 years ago
Read 2 more answers
Factor the expression: -x - 6 =
tia_tia [17]

Answer:

- ( x + 6) I think

7 0
3 years ago
Read 2 more answers
Help!!!!! 1. 3 tsp. = ____ T.
yKpoI14uk [10]
1
2
1
16
8
5 T + 1 tsp
4
10 T + 2 tsp
12
1
8 0
3 years ago
Other questions:
  • Ava's dog weights 52 kilograms. Marty's dog weights 3/4 as much. Find the weight of Marty's dog in kilograms.
    15·2 answers
  • The attendance at the school concert was 578. Admission was $2.00 for adults and $1.50 for students. The receipts were $985.00.
    10·1 answer
  • How do I find the other reflection?
    10·1 answer
  • Twice the quotient of 50 and the sum of a number y and 8
    11·1 answer
  • You go to a restaurant with 3 friends the total bill is 90 you pay 6% tax and add 20% tip what do you pay
    6·2 answers
  • the original price of a collectible model airplane is $115. The discounted price is $99. What is the percent of discount to the
    7·1 answer
  • When given an algebraic expression involving subtraction, why is it best to rewrite the expression using addition before identif
    7·1 answer
  • Glenn has a garden that is shaped like a rectangle.
    11·1 answer
  • A school band found they could arrange themselves in rows of 6, 7, or 8 with no one left over. What is the minimum number of stu
    6·1 answer
  • The perimeter of a rectangle the painting is 272 cm the length of the painting is 78 cm what is the width
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!