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2 years ago

What is the scale factor of the dilation shown ?

Mathematics

1 answer:

TEA [102]2 years ago

6 0

<h3>Answer: Choice B. 2/3</h3>

Work Shown:

k = scale factor

k = (A'B')/(AB)

k = 8/12

k = (4*2)/(4*3)

k = 2/3

Triangle A'B'C' (image) has side lengths that are 2/3 as long compared to the side lengths of triangle ABC (preimage).

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In a science test devi scores 15 marks more than lixin . If devi obtains twice as many marks as lexin . Find the number of marks

BabaBlast [244]

Answer:

Lixin obtains 15 marks

Step-by-step explanation:

Lets write two equations based on the question where: D= Devi and L=Lixin

D=L+15 - "devi scores 15 marks more than lixin"

D=2L - "devi obtains twice as many marks as lexin"

Now, substitute 2L as D in the first equation we wrote: (D=L+15)

2L=L+15

Next, subtract L from both sides:

L=15

3 0

4 years ago

Pat wants to enter a typing contest. In order to enter, one has to be able to type t0 words per minute. Pat took 15 seconds to t

galben [10]

No, because he can only type 40 words a minute

5 0

3 years ago

I need to know the start value!!

dedylja [7]

Answer: is it 4, maybe?

7 0

4 years ago

What is p+1 +8 = 8p+16

padilas [110]

Answer:

Step-by-step explanation:

p+1 +8 = 8p+16

p+9 = 8p+16

9-16 = 8p-p

-7=7p

-7/7 =p

-1=p

5 0

3 years ago

What number should be added to both sides of the equation to complete the square?

lubasha [3.4K]

Answer:

9 should be added to both sides of the equation to complete the square.

Step-by-step explanation:

Given : $x^2 -6x = 5$

To Find: What number should be added to both sides of the equation to complete the square?

Solution:

$x^2 -6x = 5$

Add the square of half of coefficient of x

So, the square of half of coefficient of x = $(\frac{6}{2})^2=3^2 =9$

So, $x^2 -6x +9 = 5+9$

$x^2 -6x +3^2 = 5+9$

$x^2 -2 \times 3 \times x +3^2 = 5+9$

$(x-3)^2 = 5+9$

$(x-3)^2 =14$

Thus 9 should be added to both sides of the equation to complete the square.

8 0

3 years ago