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3 years ago

Which shape has 3 sides and 3 corners?

Mathematics

2 answers:

IrinaK [193]3 years ago

7 0

The second one the one that is purple

lesya692 [45]3 years ago

3 0

Triangles have 3 sides and 3 corners so it’s the middle option, the purple triangle

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A town has a population of 50,000. it’s rate increase is 8% every 6 months. find the population after 4 years

Ainat [17]

82,000 bc 8% of 50,000 is 4000 and 4000 times 8 is 32,000 + 50000

6 0

2 years ago

The population of a city is growing at an average rate of 3% per year in 1990 the population was 45 000.

Nonamiya [84]

This is an exponential growth/decay problem...

F=Ir^t, F=final value, I=initial value, r=rate, t=time, in this case:

F=I(1.03)^t and they just want to know when F=2I so

2=1.03^t take natural log of both sides...

ln2=t*ln1.03

t=ln2/(ln1.03)

t≈23.45

So it will take approximately 23.45 years for the population to double..

1990+23.45=2013.45

So during the year of 2013 the population will have double from its 1990 level.

5 0

3 years ago

The line CD passes through the points C (2, -1) and D (1, 1). Which of the

inn [45]

Answer:

The equation of the straight line in point - slope form

y +1 = -2 ( x-2)

Step-by-step explanation:

Step(i):-

Given points are C( 2,-1) and D(1,1)

Slope of the line

$m = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{1-(-1)}{1-2} = \frac{2}{-1} = -2$

m = -2

Step(ii):-

Equation of the straight line passing through the point ( 2,-1) and having slope

m =-2

y - y₁ = m ( x- x₁)

y - (-1) = -2 ( x-2)

y +1 = -2 ( x-2)

Final answer:-

The equation of the straight line

y +1 = -2 ( x-2)

3 0

2 years ago

When the coordinates (1, 1), (4, 4), (7, 1), and (4, −2) are joined, which shape is formed? (5 points)

Citrus2011 [14]

well, if we try to plot and conect them, we will get square, so the answer is d

4 0

3 years ago

9. If 3/4 of a ton of sand covers 2/5 of a playground, how many tons of sand are required to cover the entire playground

Lynna [10]

1 7/8 tons of sand will be required to fill the playground

6 0

3 years ago