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nikdorinn [45]
3 years ago
5

-8

Mathematics
1 answer:
nevsk [136]3 years ago
6 0

Answer:

  take your pick. Each has its own reason.

Step-by-step explanation:

As with a lot of "doesn't belong" problems, the one that is different depends on your criteria. In the attached figure, each one "doesn't belong" for a different reason. Those reasons are listed below each number line.

__

I might choose the lower left: "addition, not subtraction", as it is the only one with arrows in the same direction. That makes its difference from the others more obvious, perhaps.

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How many solutions does this system have? <br> 12x+9y=-36 <br> 4x+3y=-12
amid [387]

Answer:

C infinitely many solutions

Step-by-step explanation:

multiply second equation by -3

-3 × (4x + 3y) = -12 ➡ -12x - 9y = 36 now add this to second equation

12x + 9y -12x -9y = -36 + 36 ➡0 = 0

we say there's infinite solutions because whatever value you write for x and/or y there will be a solution.

3 0
4 years ago
Read 2 more answers
The country of Freedonia has decided to reduce its carbon-dioxide emission by
Goshia [24]

Answer:

\\E(t) =40(0.65)^{t}

Step-by-step explanation:

Since the country wants to reduce the emission by the percentage each year, the function will be decaying function. The formula of decaying function will look like this  

E(t) =E_{0} (1-r)^{t}\\

Where

E(t) = the number of emission after t years

E0= the number of initial emission= 40 million tons

r=rate of growth/decay = 35%= 0.35

t= time in years

If we put the number, the equation will be:

E(t) =E_{0} (1-r)^{t}\\E(t) =40(1-0.35)^{t}\\E(t) =40(0.65)^{t}

3 0
4 years ago
here are approximately 4.2 million births in a country each year. Find the birth rate in units of births per minute.
marusya05 [52]

Answer:

8 births to 1sf

Step-by-step explanation:

4.2m births per year in unspecified country.

4.2 / 0.000365 = 11506.8493  per day

11506.8493 / 24 = 479.452054  per hour

479.452054 / 60 = 7.99086757  per minute  = 8 births to 1sf

3 0
3 years ago
At Store A, a game system sells for $150. The same system sells for $175 at Store B. Use a ratio to compare the price at Store A
Kipish [7]
150:175
Hope I helped
6 0
3 years ago
Olivia is making scarves. Each scarf will have 3 rectangle, and 2/3 of the rectangles will be purple. How many purple rectangles
Salsk061 [2.6K]

Answer:

she will use 4.

Step-by-step explanation:

kajsbsbsjajaja

6 0
3 years ago
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