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2 years ago

I need help with Geometry

Mathematics

2 answers:

I am Lyosha [343]2 years ago

8 0

Answer: 180 degrees

Imagine you had a long and flat rectangle. If we spin it around the center, we can rotate it 180 degrees so it lines up with its original image. The before and after is the same. We say it has rotational symmetry, and the angle of rotation is 180 degrees. This is the smallest rotational angle possible for rectangles that aren't squares.

valkas [14]2 years ago

4 0

Answer:

180 degrees since only two opposite sides are congruent in a rect, which would require you to flip it 180 degrees for it to map onto itself

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What is the equation of the circle whose center and radius are given.

muminat

Hello!

The equation for a circle is

$(x - h)^{2} + ( y - k)^{2} = r^{2}$

(h,k) is the center
r is the radius

Put in the values you know

$(x - 7)^{2} + ( y + 3)^{2} = 7^{2}$

Simplify

$(x - 7)^{2} + ( y + 3)^{2} = 49$

The equation is $(x - 7)^{2} + ( y + 3)^{2} = 49$

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3 years ago

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Is 40% of a class are girls. and 25% of girls play tennis, what is the percent of the class play tennis?

ASHA 777 [7]

Answer: a. 10%

Step-by-step explanation:

Girls in the class = 40%

Girls play tennis = 25%

Percentage of class play tennis = 40%*25% = 0.4*0.25 = 0.1

Percentage of class play tennis = 10%

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3 years ago

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Haeden observed that 65% of her coworkers prefer the local talk news radio station. If 28 of her coworkers do not prefer talk ne

vekshin1

Part A

Let x represent the number of coworkers who prefer the talk news radio.

$65$ % prefer the talk news radio,

$100-65=35$ % will be the percentage that corresponds to coworkers who do not prefer the talk news radio.

Part B

We apply ratio to find x.

$65:x$

$35:28$

Hence number that corresponds to 65% will be greater than 28.

If more, less will divide.

This implies that,

$x=\frac{65\times 28}{35}=52$

Hence 52 of her coworkers prefer the local news talk station.

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3 years ago

MATHMATECIS HELP. HELP APPRECIATED. I NEED AN EXPLANATION STEP BY STEP PLEASE

VARVARA [1.3K]

Answer:

i think B

Step-by-step explanation:

because if we think logically...the price have to more than 10-28.All answer except B are illogical for me i think

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2 years ago

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user100 [1]

Answer:

Step-by-step explanation:

When you square a number, you chose a number and multiplying itself. If you did the square root of 25, you would get 5. However if you divided 25 by 2, you would get 12.5 which is NOT the square root.

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3 years ago

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