3 years ago

What is the minimum number of colors you can use to color each map below using different colors for neighboring regions?

Mathematics

2 answers:

Virty [35]3 years ago

7 0

4 colors is the minimum

Kruka [31]3 years ago

6 0

The answer is 4.

Hope this helps!

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8x − 4y = −16 <br> 3x + 15y = −6

mr_godi [17]

Answer:

good job that is correct

Step-by-step explanation:

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yep

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2 years ago

In the third degree polynomial function f(x) =x^3 + 4x, why are 2i and -2i zeros?

IgorC [24]

Answer:

We just need to evaluate and get f(2i)=0, f(-2i)=0.

Step-by-step explanation:

Since $i^2=-1$ , then $i^3=i^2i=-i$ , and we can apply this when we evaluate $f(x) =x^3 + 4x$ for 2i and -2i.

First we have:

$f(2i) =(2i)^3 + 4(2i)=2^3i^3+8i=8(-i)+8i=0$

Which shows that 2i is a zero of f(x).

Then we have:

$f(-2i) =(-2i)^3 + 4(-2i)=(-2)^3i^3-8i=-8(-i)-8i=8i-8i=0$

Which shows that -2i is a zero of f(x).

4 0

3 years ago

If h = 8 units and r = 2 units, then what is the approximate volume of the cone

Mumz [18]

V=π * r^2 * h/3 = π * 2^2 * 8/3 ≈ 33.51032 or about 34 units^2

8 0

3 years ago

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A town has a population 2000 and grows 4.5% every year. What will be the population after 13 years to the nearest whole number

Masteriza [31]

3,170 i think thats the answer.

7 0

3 years ago

Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. It takes Amy 40 minutes t

ruslelena [56]

Bill and Amy travel the same distance from home to school of 14.4 kilometers. Amy takes 40 minutes of time to arrive to school which means she has a rate of 14.4 km /40 minutes or 6 meters/ second. Bill takes a total 60 minutes to arrive to school. Hence Bill's rate is equal to 14.4 km/60 minutes or 4 meters/ second.Amy's is 2 m/s faster than Bill's speed, then.

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2 years ago