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PilotLPTM [1.2K]
3 years ago
11

What figures have rotation symmetry? PLEASE HELP I NEED A GOOD GRADE

Mathematics
2 answers:
Darina [25.2K]3 years ago
6 0

if set up like

1 2

3 4

its 1 and 4

1 has 90deg rotationals and 4 has 180 the other two don't.

Ivanshal [37]3 years ago
5 0
The figures on the top left and the bottom right have rotational symmetry.
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A pool is being drained at a rate of 120 gallons per minute.What is this rate in quarts per hour?
zysi [14]
There are 4 quarts in 1 gallon, so a rate of 120 gallons per minute converts to 4 x 120 = 480 quarts per minute. To find the per hour rate, we simply multiply our per minute rate by 60, obtaining 480 x 60 = 28800 quarts per hour.
7 0
2 years ago
If triangle ABC is isosceles and triangle DBE is equilateral what is the measure of angle C
luda_lava [24]

Answer:

43°

Step-by-step explanation:

For triangle ABC:

A = C so all we need to do is to calculate the value of B

The measure of angle ABD is given as 17° so the measure of angle EBC must be 17° as well

Since DBE is an equilateral triangle angle is DBE = 60°

17 + 17 + 60 = 94 this is the measure of angle B

The sum of interior angles in a triangle is equal to 180

A + B + C = 180

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A + C = 86 since A = C we divide 86 by 2

C = 43°

6 0
2 years ago
Oliver has music lessons in Monday Wednesday and Friday.Each lesson is 3/4 of an hour Oliver says he will have lessons for three
Hoochie [10]
Oliver is incorrect because if he were correct he would learn for 2 hours and 15 minutes because, 45 minutes * 3= 2:15 minutes.
4 0
2 years ago
Wesley can use the equation y=3x to calculate how far he has walked, where y represents the number of miles walked, and x repres
arlik [135]

16.5/3 = 5.5

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Write an expression for the area of the shaded region in its simplest form. Show all of your steps.
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The area of the shaded region will be the area of the rectangle minus the area of the white square inside of it:

((x+10)(2x+5)) - ((x+1)(x+1))

First, FOIL both of the areas separately:

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Simplify within the parentheses by adding like terms:

(2x^2 + 25x + 50) - (x^2 + 2x + 1)

Now, subtract one equation from the other:

2x^2 + 25x + 50
-x^2  -    2x  -   1
= x^2 + 23x + 49

This will be the equation for the area.
3 0
3 years ago
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