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san4es73 [151]
4 years ago
10

Adi used algebra tiles to represent the product (negative 2 x minus 1)(2 x minus 1). An algebra tile configuration. 4 tiles are

in the Factor 1 spot: 2 are labeled negative x and 2 are labeled negative. 3 tiles are in the Factor 2 spot: 2 are labeled + x and 1 is labeled negative. 12 tiles are in the Product spot: 4 are labeled negative x squared, 4 are labeled negative x, 2 are labeled + x, and 2 are labeled +. Which is true regarding Adi’s use of algebra tiles?A) She used the algebra tiles correctly. B) She did not represent the two original factors correctly on the headers. C) The signs on some of the products are incorrect. D) Some of the products do not show the correct powers of x.
Mathematics
2 answers:
Hunter-Best [27]4 years ago
8 0

Answer:

Step-by-step explanation:

c

Otrada [13]4 years ago
7 0

Answer:

Option D) The signs on some of the products are incorrect.

Step-by-step explanation:

Let's gather the data:

The product involves two numbers: (-2x-1) and (2x-1)

Multiplying the two numbers gives:

(-2x-1)(2x-1) = -4x^{2} +2x-2x+1\\                   = -4x^{2} + 1

Let's analyse the product:

The coefficient of x = -4 (negative 4)

1 carries a positive sign (+1)

Therefore, incorrect signs were assigned to the numbers.

Hence option D is the correct answer.

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The number of cars entering a roadway at a specific exit during the morning rush hour traffic (6AM to 9AM, M-F) is a random vari
rusak2 [61]

Answer:

0.5

Step-by-step explanation:

This is an example of mutually exclusive event in which two or more events cannot occur at the same time or in a single performance.

Therefore, the probability the number of cars entering the roadway is between 4 and 6 cars per minute (inclusive) implies that it is either 4, 5 or 6 cars enter in a minute. Since we have an average of 6 cars per minute, the probability of each of the event occurring is 1/6. This can therefore be calculated as follows:

P(4 or 5 or 6) = (1/6) + (1/6) + (1/6)

                      = 3/6

                      = 1/2

                      = 0.5

Therefore, the probability the number of cars entering the roadway is between 4 and 6 cars per minute (inclusive) is 0.5.

5 0
3 years ago
What is the SUM of the interior angle of a 22-gon? Use the formula below.<br> S = (n -2) 180
stiks02 [169]

Answer:

3,600

Step-by-step explanation:

(22 - 2) x 180

20 x 180

3,600

7 0
3 years ago
Given the function h(x) = 4x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3.
morpeh [17]
Section A) The AROC for Part A is 4.
            h(x) = 4 * 1. 4 is your answer.
Section B) The AROC for Part B is 1.
            h(x) = 4 * 1. 4 is your answer.

Part A: (Above)

Part B: There is no greater average change, both X's AROC is 4.


A.R.O.C: (Average Rate of Change)

I think this is right. Not 100% though
6 0
3 years ago
I need help asap :):):):)
Georgia [21]

Answer:

b

Step-by-step explanation:

3 0
4 years ago
Given f(x) = 6x^4 – 10x^3 + 40x – 50, find f(2)
ASHA 777 [7]
F(x)=6x^4-10x^3+40x-50, plug 2 in for x
f(2)=6(2)^4-10(3)^3+40(2)-50
f(2)=12^4-30^3+80-50
f(2)=20735-27,000+80-50
f(2)=-6,235
4 0
3 years ago
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