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Y_Kistochka [10]
3 years ago
5

1. Which expressions below are equivalent to 2(2x + 1)? Select all that apply.

Mathematics
2 answers:
Alja [10]3 years ago
5 0

Answer:

A, and B

Step-by-step explanation:

I think they are the correct answer

GarryVolchara [31]3 years ago
3 0

Answer:

4x+2

Step-by-step explanation:

2(2x+1)

4x +2

you distribute the the 2

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AB is dilated by a scale factor of 3 to form AB . Point O is the center of dilation, and point O lies on AB . If the slope of AB
avanturin [10]
<h2>Answer:</h2>

Option: D is the correct answer.

  D.    The slope of is 3, and passes through O.

<h2>Step-by-step explanation:</h2>

It is given that:

AB is dilated by a scale factor of 3 to form AB .

Also, the line AB pass through the origin.

So, if AB pass through (0,0) and some point (x,y) then the slope of line AB is:

Slope=\dfrac{y-0}{x-0}\\\\i.e.\\\\Slope=\dfrac{y}{x}=3

( Since, it is given the slope of AB is 3 )

Now , if AB is dilated to A'B' by a scale factor of 3 then

(0,0) → (0,0)

and

(x,y) → (3x,3y)

i.e. (0,0) and (3x,3y) will lie on A'B'.

Hence, the slope of line A'B' is given by:

Slope=\dfrac{3y-0}{3x-0}\\\\i.e.\\\\Slope=\dfrac{3y}{3x}\\\\i.e.\\\\Slope=\dfrac{y}{x}=3

Hence, both have the same slope.

                The answer is :  Option: D

5 0
3 years ago
Answer some of the questions, please
zloy xaker [14]

Answer:

1)= a 30

2)= b 2¹⁰

3)= d 0.75²

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4 0
3 years ago
Read 2 more answers
A school track is shown.
ella [17]

Answer:

2232.36m

Explanation:

since the perimeter of two semicircles adds up to that of one circle, the perimeter of the track would be the perimeter of the circle + the length of the rectangle.

we can find the perimeter of the circle using the formula of π × diameter, which would be:

π × diameter

= 3.14 × 74

= 232.36

now, we can add this to the given length of the rectangle:

232.36 + 1000 + 1000 = 2232.36

thus, the perimeter of the track is <u>2232.36m</u>.

i hope this helps! :D

4 0
3 years ago
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Find the slope of the line y= -3x+7
Softa [21]

Answer:

<h3>If you had a line of x = 7, (or any time you have an equation where x equals a number) then you would have a vertical line. In every vertical line, the slope is undefined. In equations of lines that are in the format of y = mx + b, the slope is represented by the "m".</h3>
6 0
3 years ago
Help me, please!! I wasn't there for the lesson.
liberstina [14]
The first option would be the right answer. Martha has 33, where jackson has 22
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3 years ago
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