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Alenkasestr [34]
3 years ago
7

How can help me on this the blank one if the one I need help one btw

Mathematics
2 answers:
adell [148]3 years ago
8 0
Yeah the answer is zero. Because when you add a positive and a negative together it will always cancel each other out
Serga [27]3 years ago
6 0

Answer:

0

Step-by-step explanation:

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A vegetable garden with an area of 200 square feet is to be fertilized. If the length of the garden is 1 foot less than three ti
charle [14.2K]
Ok so I like to go in steps with these questions- first draw a picture and identify your variables.

W=width
L= 3w-1

Now we know that length times width gets us area so we plug in our variables into the area equation.

200 = w(3w-1)

When you foil that equation you end up with a quadratic : 3w^2-w-200 = 0

Either factor that or use the quadratic formula to get
w= 8.33 and w= -8

Since you can't have a negative dimension you need to use 8.33 and plug it back into your length equation.

Final answer:

w= 8.33ft
l= 23.99ft

*Now I simplified the decimals a little bit so you end up with 199.8ft^2 for the area so just add a few decimals on here and there*
5 0
3 years ago
Read 2 more answers
A certain city's population is 120,000 and decreases 1.4% per year for 15 years.
mart [117]

Answer:

  • Decay Problem.
  • Decay rate,  r = 0.014
  • Initial Amount =120,000
  • P(t)=120000(0.986)^t
  • P(10)=104,220

Step-by-step explanation:

The exponential function for growth/decay is given as:

P(t)=P_0(1 \pm r)^t, where:\\P_0$ is the Initial Population\\r is the growth/decay rate\\t is time

In this problem:

The city's initial population is 120,000 and it decreases by 1.4% per year.

  • Since the population decreases, it is a Decay Problem.
  • Decay rate, r=1.4% =0.014
  • Initial Amount =120,000

Therefore, the function is:

P(t)=120000(1 - 0.014)^t\\P(t)=120000(0.986)^t

When t=10 years

P(10)=120000(0.986)^10\\=104219.8\\\approx 104220 $ (to the nearest whole number)

8 0
3 years ago
A monk crossbred​ plants, which can have purple or white​ flowers, and obtained 539539 plants with white flowers and 373373 plan
ivann1987 [24]
Wow a lot of plants but make a Mendelson Square [looks like a tic- tac -toe board (# this super large) with p and w at the top and p and w down the side. I would some how get those numbers checked out cuz generally there are only 4 squares:)
8 0
3 years ago
During the first 14 days 2744 people visited a new store. The same number of people visited the store each day. About how many p
Vikentia [17]
Everyday about 200 people visited the store Because you would divide 2744 by 14 and get 196 and round that to 200 
4 0
3 years ago
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Hans cell phone plan answers c d and e
Bogdan [553]

Answer:

wait what?? lol i dont get this question-

3 0
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