3 years ago

Jim walks 2 miles in an hour. It takes him 3 hrs to walk 6 miles.

Mathematics

1 answer:

julia-pushkina [17]3 years ago

5 0

Answer:

in 5 hours he would walk 10 miles. It would take him about 2 hours to walk 4 miles

Step-by-step explanation:

Since he walks 2 miles an hour, you can multiply 5 by 2 in order to get 10 miles. Use this same strategy for the 4 miles except reverse, divide 4 by 2, 2 hours.

An equation you can use is, Y = ( X ) x 2

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Island A is 150 miles from Island B. A ship captain travels 310 miles from Island A and then finds that he is off course and 200

wolverine [178]

Answer:

156.37°

Step-by-step explanation:

We solve this above question, using Cosine rule which is given as:

Cos C = a² + b² - c²/2ab

Let the Angle be represented as: x

Cos x = 310² + 200² - 150²/2 × 310 × 200

x = arc cos [ 310² + 200² - 150²/2 × 310 × 200]

x = 23.63°

The angle, in degrees, that he must turn through to head straight for Island B is given as:

180° - 23.63°

= 156.37°

4 0

2 years ago

Y= -27(x+4)³+1 the real zero(s) is (are)

rjkz [21]

$\bf y=-27(x+4)^3+1\implies 0=-27(x+4)^3+1
\\\\\\
-1=-27(x+4)^3\implies \cfrac{-1}{-27}=(x+4)^3\implies \cfrac{1}{27}=(x+4)^3
\\\\\\
\sqrt[3]{\cfrac{1}{27}}=x+4\implies \cfrac{\sqrt[3]{1}}{\sqrt[3]{27}}=x+4\implies \cfrac{1}{3}=x+4\implies \cfrac{1}{3}-4=x
\\\\\\
-\cfrac{11}{3}=x$