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3 years ago

Hurry I am timed and need the answer to this question 5.6 ÷ 1,000

Mathematics

1 answer:

Anon25 [30]3 years ago

3 0

Answer:

0.0056

Step-by-step explanation:

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What happens to the volume of a cylinder when the height is doubled

sveticcg [70]

Answer:

If the radius of a cylinder is doubled and height is halved, the volume will be doubled. If the radius of a cylinder is doubled and height is halved, the volume will be doubled.

Step-by-step explanation:

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3 years ago

A ship traveled for 4 hours heading west and for 5 hours heading north. If the total distance traveled was 119 miles, and the sh

Eduardwww [97]

To answer this problem, we will use the formula of hypotenuse:

c^2 = a^2 + b^2

Where,

c = total distance traveled / displacement = 119 miles

a = distance traveled north = 5 hours * x mph = 5 x

b = distance traveled west = 4 hours * (x + 5) mph = 4 (x + 5)

Substituting to the equation:

119^2 = (5 x)^2 + [4(x + 5)]^2

14,161 = 25 x^2 + 16 (x + 5)^2

14,161 = 25 x^2 + 16 (x^2 + 10 x + 25)

14,161 = 25 x^2 + 16 x^2 + 160 x + 400

0 = 41 x^2 + 160 x – 13,761

x =[ - b ± sqrt (b^2 – 4ac)]/ 2a

x = [- 160 ± sqrt (160^2 – 4 * 41 * (– 13,761))] / 2 * 41

x = - 1.95 ± 18.42

x = -20.37 , 16.47

Since speed cannot be negative, therefore x = 16.47

Therefore the speed of the ship travelling west is:

x + 5 = 21.47 mph (ANSWER)

4 0

3 years ago

What is the value of the discriminant for the quadratic equation 0 = x + 2 + x2?

Kobotan [32]

The discriminant of a quadratic expression $ax^2+bx+c$ , where a in not 0, is the expression
$D=b^2-4ac$ .

Thus, we compare $x^2+x+2$ to $ax^2+bx+c$ and see that

a=1, b=1, c=2.

Substituting these values in   $D=b^2-4ac$ , we have:

    $D=(1)^2-4\cdot1\cdot2=1-8=-7$ .

Answer: -7

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3 years ago

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PLEASE HELP MEEEEE!!!!!

Leviafan [203]

Answer:

Step-by-step explanation:

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3 years ago

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G^2 – 9 factor each expression please help

cestrela7 [59]

Using the difference of squares rule, we can say
g^2 - 9 = g^2 - 3^2
g^2 - 9 = (g-3)(g+3)

So, the answer is (g-3)(g+3). This is the same as (g+3)(g-3)

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3 years ago