Ask question

Ask question

All categories

3 years ago

5

John says the transformation rule (x, y) > (x + 4, y + 7) can be used to describe the slide of the pre-image (4, 5) to the im

age (0, –2). What was his error?

1 answer:

erik [133]3 years ago

5 0

If he used the rule (x + 4, y + 7) then pre-image (4, 5) would result in image (4 + 4, 5 + 7) = (8, 12).

He should have used the rule (x - 4, y - 7)

You might be interested in

Factorize x^2/16+xy+4y^2

lisov135 [29]

Answer:

$\frac{x^2}{16} +xy+4y^2$ can be factored out as: $(\frac{x}{4} +2\,y)^2$

Step-by-step explanation:

Recall the formula for the perfect square of a binomial :

$(a+b)^2=a^2+2ab+b^2$

Now, let's try to identify the values of $a$ and $b$ in the given trinomial.

Notice that the first term and the last term are perfect squares:

$\frac{x^2}{16} = (\frac{x}{4} )^2\\4y^2=(2y)^2$

so, we can investigate what the middle term would be considering our $a=\frac{x}{4}$ , and $b=2y$ :

$2\,a\,b=2\,(\frac{x}{4}) \,(2\,y)=x\,y$

Therefore, the calculated middle term agrees with the given middle term, so we can conclude that this trinomial is the perfect square of the binomial:

$(\frac{x}{4} +2\,y)^2$

4 0

3 years ago

What is the arc length S what is shown below?

Solnce55 [7]

Answer:

14 cm

Step-by-step explanation:

The applicable formula is ...

s = rθ

s = (7 cm)(2) = 14 cm

3 0

3 years ago

How long would it take the two trains to meet?

tiny-mole [99]

Answer: 2.5 hours.

Step-by-step explanation:

7 0

3 years ago

9. Kara is making copies of articles she needs to for her research paper. The local library charges $0.17 per page, and she has

Dominik [7]

9.35$ Because if you Think in ur brain and you multiply by Benjamin Franklin Then If you do
0.17x 55=9.35$ Cuz Multiply

8 0

2 years ago

Mr. Abraham is 36 years old. His wife is 6 years younger than him and their son is 24 years old younger than his wife. What is t

sesenic [268]

Hi!
We know that Mr. Abraham’s wife is 6 years younger than him, which is 36-6, which means his wife is 30 years old.

We also know that Mr A’s son is 24 years younger than his wife, which is 30-24, which is 6.

As of right now, we now know that:
Mr. A is 36
Mr. A’s wife is 30
Mr. A’s son is 6

It’s asking for the ratio of Him:Wife:Son, so 36:30:6.

BUT, it’s asking for simplest form, so divide each of those numbers by 6.

Your answer is: 6:5:1

8 0

3 years ago