All categories

3 years ago

Which of the following represents the factorization of the binomial below?

Mathematics

1 answer:

Serggg [28]3 years ago

4 0

Answer:

Step-by-step explanation:

x² - 81 ← is a difference of squares and factors in general as

a² - b² = (a + b)(a - b)

Here a = x and b = 9, thus

x² - 81 = (x + 9)(x - 9) → D

You might be interested in

What is the slope of the line that contains the points in the table?

Debora [2.8K]

Answer:

Step-by-step explanation:

The boxes with whole numbers in them written as coordinates:

(-4, -11)

(8, -8)

we know gradient is rise over run, or (y2 - y1) / (x2 - x1)

gradient = (-8 - -11) / (8 - -4)

gradient = 3 / 12

gradient = ¼

4 0

1 year ago

Read 2 more answers

What is the value of sine of begin argument 45 degrees end argument?

nirvana33 [79]

Answer:

Option A

fraction numerator square root of 2 over denominator 2 end fraction

Step-by-step explanation:

The answer can be obtained using a calculator.

It corresponds to a notable identity

sin (45) = $\sqrt{2}$ / 2

sin (45) = 0.7071

$\sqrt{2}$ / 2 = 0.7071

Please see attached picture

5 0

2 years ago

After 10 weeks, how much money would William have in his bank account? Show your work.

noname [10]

Answer:

The answer seems to be going up by $14 every week

Step-by-step explanation:

Week 5 is $100, Week 6 is $114, Week 7 is $128, Week 8 is $142, Week 9 is $156, Week 10 is $170

7 0

1 year ago

in one year dog's weigh from 64 pounds to 80 pounds . by what percentage did the dog's weght increase

Masja [62]

Answer:

15%

Step-by-step explanation:

First, let's find how many pounds the dog's weight increased by during the year.

80 - 64 = 16

Now, knowing that the dog's weight increased by 16 pounds, we can use that to figure out the percentage of 16 out of 64 (divide them, then multiply by 100 to get a percentage).

$\frac{16}{64}$ • 100 = 0.25 • 100 = 25%

8 0

2 years ago

B. (3x + 2) + (4y +3)

liberstina [14]

B. 4y + 3x + 5

c. 4y + 2x + 4

d. 4y + 7

6 0

2 years ago