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gayaneshka [121]
3 years ago
7

I’m stuck on this one- sorry if I’m annoying lol

Mathematics
1 answer:
Hunter-Best [27]3 years ago
8 0

Answer:

The first statement: "Her first mistake was in Step 2. She added 0.2 to each term instead of multiplying by 0.2."

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Taking a discount of 50% off followed by a discount of 50% off results in a total discount of _____.
Artemon [7]
I believe that it is 75%, because if you take 20*.50= 10*.50=5= 75% of your original price. I think.. 
6 0
3 years ago
Logan has 22 blue marbles and eight red marbles what is the ratio of red marbles to the total Of marbles
Lunna [17]

Answer:

it is 8/30

Step-by-step explanation:

first you have to add the red and blue marbles together to get the total of marbles which is 22 so then you create a fraction of 8/30 8 is the red marbles and 30 is the total number of marbles

5 0
3 years ago
A community pool that is shaped like a regular pentagon needs a new cover for the winter months. The radius of the pool is 20.10
boyakko [2]

Answer:

960.42\text{ ft}^2

Step-by-step explanation:

Please find the attachment.  

We have been given that a community pool that is shaped like a regular pentagon needs a new cover for the winter months.

To find the area of community pool we will use area of pentagon formula.

\text{Area of pentagon}=\frac{1}{2}a*p, where, a represents the apothem or perpendicular distance from the center of the pentagon and p represents perimeter of pentagon.

Let us find the perimeter of our given pentagon by multiplying each side length by 5.

\text{Perimeter of community pool}=5\times 23.62

\text{Perimeter of community pool}=118.1

Now let us find apothem of our pentagon by using Pythagoras theorem.  

a^2=20.10^2-11.81^2

a^2=404.01-139.4761

a^2=264.5339

a=\sqrt{264.5339}

a=16.2645

Upon substituting our given values in above formula we will get,

\text{Area of community pool}=\frac{1}{2}\times 16.2645\times 118.1

\text{Area of community pool}=8.13224907\times 118.1

\text{Area of community pool}=960.418615627971\approx 960.42

Therefore, the area of the pool that needs to be covered is 960.42 square feet.

3 0
3 years ago
Read 2 more answers
PLEASE HELP IM BEGGING YOU ITS DUE IN 15 MIN ILL GIVE BRAINEST AND PTS
lys-0071 [83]

answer:

you just have to shrink it down to 4cm then to 2cm

i wish i could help out more, but i would need to have access to the form

hopefully, this helps anyhow :)

good luck

have a great day !!

4 0
3 years ago
SUBTRACT 39 FROM 16 RAISED TO THE 7TH POWER, THEN MULTIPLY BY 3
MA_775_DIABLO [31]

I assume you mean 3(16^7-39)?

16^7 is 268435456

268435456-39 is 268435417

268435417 multiplied by 3 is 805306251

Hope this helped.

7 0
3 years ago
Read 2 more answers
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