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lisabon 2012 [21]

3 years ago

5

The surface area of the world is about 4/10 water. If a very small, non-dangerous meteoroid lands on the earth, what is the prob

ability it does not land in the water?
.04

60%

.4

2/5

1 answer:

AlexFokin [52]3 years ago

6 0

Answer:

60%. please give brainliest

Step-by-step explanation:

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What is 88 tens minus 20 tens ?

Nataliya [291]

88 tens = 880
20 tens = 200

880 - 200 = 680

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3 years ago

How many planes of symmetry does a rectangular pyramid has?<br>

Tju [1.3M]

Answer:

6

Step-by-step explanation:

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2 years ago

The radius of a cylindrical gift box is (4x + 1) inches. The height of the gift box is three times the radius. What is the sur

user100 [1]

Answer:

S = 128πx² + 64πx + 8π

Step-by-step explanation:

Suraface area of a cylinder is given by:

S = 2πrh + 2πr²

We know that the height is 3 times as big as the radius, hence:

h = 3r

so we can plug in the new h value and rewrite the S equation as:

S = 2πrh + 2πr²

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S = 6πr² + 2πr²

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We're given in the question that the radius is (4x + 1) inches, so plug that into r.

Given: r = 4x + 1

Therefore,

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S = 8π(16x²+8x+1)

S = 128πx² + 64πx + 8π

8 0

3 years ago

Read 2 more answers

Using the equation 2 + 3/41 = 5, what does the value of I equal?

Wewaii [24]

Answer:

i did't see the value I in the equation

Step-by-step explanation:

8 0

3 years ago

Which two values of x are roots of the polynomial below?

Julli [10]

Answer:

B. and C.

Step-by-step explanation:

1. Set the polynomial equal to zero:

x² + 5x + 7 = 0

2. Plug the given values of a, b, and c into the quadratic formula:

$x=\frac{-5+-\sqrt{5^{2}-4(1)(7) } }{2(1)}$

3. Solve the square root:

$x=\frac{-5+-\sqrt{25-4(1)(7)} }{2(1)}$

$x=\frac{-5+-\sqrt{25-28} }{2(1)}$

$x=\frac{-5+-\sqrt{-3} }{2(1)}$

4. Simplify the rest:

$x=\frac{-5+-\sqrt{-3} }{2}$

5. Separate the solutions:

$x=\frac{-5+\sqrt{-3} }{2} , x=\frac{-5-\sqrt{-3} }{2}$

Thus, options B and C are the answers.

hope this helps!

4 0

2 years ago