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Nitella [24]
3 years ago
12

Someone plz help desperateeeeee

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0

We are told that Tristan is planting a garden that's square shaped and its area is 64 square meters.  Because 8 * 8 = 64, we have a square where each side is 8 meters along.

From an algebra point of view, where s is a side of the square,

s² = 64

s = 8 or s = -8 by taking square roots of both sides

s = 8 by discarding the -8 (lengths cannot be negative)

Now that we know a square's side we need its perimeter. Each side is the same, so a square's perimeter is four times a side.

4 * 8 = 32, which is our perimeter.


Therefore 32m² of material are needed.

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#6) Beth saved a total of $30 per month for her first car. Beth saved
babymother [125]

Answer:

Domain = 0≤m≤20 for mEZ+

Range = $100≤A≤$700 for all values of m

Step-by-step explanation:

Initial amount in the account = $100

Amount saved by beth monthly = $30

Amount in the bank after X month = $100+$30X where X is the number of months beth intend to save up to.

The amount in her bank in her first month = $100+$30(1)

= $100+$30

= $130

Amount saved in the second month will be when X = 2

= $100+$30(2)

= $100+$60

= $160

The amount in the bank will keep increasing by $30 monthly until the 20month.

The amount he will have in her bank in the 20th month will be at when X = 20

= $100+30X

= $100+30(20)

= $100+$600

= $700

This means that her money will be $130 in the first month and will keep increasing until it reaches $700 in the 20th month.

The DOMAIN will be the interval of the time she used in saving. Since she saved for 20months, the domain will be expressed as 0≤m≤20 for mEZ+ where m is the number of month she uses to save.

The Range will represent the amount she saved within the specified time and will be expressed as $100≤A≤$700 for all values of m.

Where $100 is the amount in the account initially and $700 is the amount in the account after 20 months.

3 0
3 years ago
If the hot dog eating champion's goal is to eat 1 hot dog every 13 seconds, how many whole hot dogs does he expect to eat in 12
sweet [91]
He wil eat a total of 55.2 hot  dogs. there 60 seconds in a minute . he plans to eat 1 hotdog in every  13 seconds . you divide 60 by 13 . he will eat 4.6 hot dogs in  a minute . then you multiply 4.6 by 12.
6 0
3 years ago
24 x 10 x 90 = 90 x 2,400 True or False?
xenn [34]
False, 24 x 10 x 90 = 21,600, 90 x 2,400 = 216,000
6 0
3 years ago
Read 2 more answers
Match the compound inequalities
kondor19780726 [428]

I one is 8x<24 and -8≤2x-4

Hence x <24/8 =3 and -4≤2x:  divide by positive 2 to get -2≤x

Hence solution is -2≤x<3

Therefore c is the correct matching for 1.

2) 5x-2>13 or -4x≥8  

i.e. 5x>15 or x≤8/(-4) = -2 (since dividing by negative inequality reverses)

Or x>3 or x ≤-2

Hence solution is two regions to the right of 3 excluding 3 and left of -2 including -2.

Graph b is the correct match.

3) -25≤9x+2<20

Subtract 2

-27≤9x<18: Now divide by positive 9

-3≤x<2

Hence graph is the region between -3 and 2 including only -3.

Graph a is correct matching for question 3.

5 0
3 years ago
Can someone help me please please please
marissa [1.9K]
Use the Pythagorean theorem a^{2} + b^{2} = c^{2} to find the missing side length of a right triangle 

In this case, after you plug in the given numbers your equation is 12^{2} +  y^{2}  =  20^{2}

Then, Just solve that equation for y.

144 +  y^{2} = 400

x^{2} = 256

\sqrt{} y^{2}  =  \sqrt{256}

y = 16

So the answer is B, 16 cm.

I hope this helps, please feel free to ask questions if you're still confused :)
7 0
3 years ago
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