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3 years ago

The picture on top is the question Helpp plzz!!

Mathematics

1 answer:

lutik1710 [3]3 years ago

7 0

The answer is A because the perpendicular slope is the opposite reciprocal which would be positive x.

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Factorise 9w² - 100<br><br><br>

ohaa [14]

Answer:

$9\, w^{2} - 100 = (3\, w - 10) \, (3\, w + 10)$ .

Step-by-step explanation:

Fact:

$\begin{aligned} & (a - b)\, (a + b)\\ =\; & a^{2} + a\, b - a\, b - b^{2} \\ =\; & a^{2} - b^{2} \end{aligned}$ .

In other words, $(a^{2} - b^{2})$ , the difference of two squares in the form $a^{2}$ and $b^{2}$ , could be factorized into $(a - b)\, (a + b)$ .

In this question, the expression $(9\, w^{2} - 100)$ is the difference between two terms: $9\, w^{2}$ and $100$ .

$9\, w^{2}$ is the square of $3\, w$ . That is: $(3\, w)^{2} = 9\, w^{2}$ .
On the other hand, $10^{2} = 100$ .

Hence:

$9\, w^{2} - 100 = (3\, w)^{2} - (10)^{2}$ .

Apply the fact that $a^{2} - b^{2} = (a - b) \, (a + b)$ to factorize this expression. (In this case, $a = 3\, w$ whereas $b = 10$ .)

$\begin{aligned}& 9\, w^{2} - 100 \\ =\; & (3\, w)^{2} - (10)^{2} \\ = \; & (3\, w - 10)\, (3\, w + 10)\end{aligned}$ .

8 0

3 years ago

Find the greatest common factor of the following monomials: 20a 46a^2 48a^6

Ierofanga [76]

60a^5 is the answer to your question

6 0

3 years ago

(2x+3)+(5x17)+90=180

klasskru [66]

Answer:

x=10

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Rita is thinking of two numbers. Adding 4 times the first number and 9 times the second number gives a total of 1. Also, adding

charle [14.2K]

Answer:

first number is negative 2, second is 1

Step-by-step explanation:

-2×4= -8 1×9=9

-8+9=1

-2×4= -8 1×6=6

-8+6= -2

hope this helped

6 0

3 years ago

Eric had 13 tiles to arrange in a rectangular design how does Erics drawing show that 13 is a prime number

zimovet [89]

You just need to divide 13 and 2 and get 6.5.

3 0

3 years ago