Why is 20 to 40 is a 100% increase but 40 to 20 is a 50% decrease

Answers

Answer 1
Answer: Its because 20 is doubling its self. Its using 100% of its number, While 40 is decreasing by 50%. Half of forty is 20. Half equals 50%.
Answer 2
Answer: I think it because how the order change

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explain the place-value relationship when the same two digits are next to each other in a multi-digit number

Answers

In the tenths place?

What is the slope of the line y= 7x - 8?

Answers

y=mx+b\n\nslope\ is\ m\n\n\ny=7x-8\n\nslope\ i\n\ m=7

Hello, hope you are having a nice day.

First, let's make sure the equation of our line is written in slope-intercept form.

Slope-Intercept Form looks like this:

y=mx+b

Where

m is the slope of the line

b is the y-intercept (where the graph touches the y-axis)

For this line, 7 is the slope, and -8 is the y-intercept form.

Hope it helps. I am always glad to help. Please ask me if you have any queries.

~An emotional teen who helps others with joy

Good luck.

What scale factor was used in the dilation

Answers

4 divide by 10 is 0.4

The answer is 0.4

Divide the image length M'P' over its corresponding preimage length MP

(length of M'P')/(length of MP) = 4/10 = 2/5 = 0.4

Answer: 0.4 which is choice C

The fact that the scale factor is less than 1 and its positive means that the image is smaller than the preimage (aka the figure shrinks). The result is positive because we don't have any reflections going on.

Tina is making rectangular signs. Each poster has an area of 1800 square inches and the length is 30 inches more than the width. Find the length and width of her sign. If x represents the width of each sign, select all of the equations that could be used to solve this problem. 2(x)+2(x+30)=1800 (x+30)(x)=1800 x(30x)=1800 x(x+30)=1800 Part 2 Find the dimensions of each rectangular sign. width = inches length = inches

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Part 1:
(x+30)(x)=1800
x(x+30)=1800

Part 2:
x+30)(x)=1800
 Distribute the x.
x2+30x=1800
 Subtract 1800 from both sides.
x2+30x−1800=0

in the first area model show 3 ninths. in the second area model show 2 sixths show how both fraction can be renamed as the same unit fraction

Answers

the can be renamed by multilying 3x2 and 2x3

Answer:

the can be renamed by multilying 3x2 and 2x3, You can also divide 2 to get the answer :)

A square is drawn inside a circle so that its vertices touch the circle.if the radius of the circle is 15cm, what is the perimeter of the square?

Answers

Answer:

the perimeter of the square is 60cm

Step-by-step explanation:

because 15 X 4 =60cm