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2 years ago

11

Assuming that the Earth has a diameter of 7920 miles and a volume 6.7 times that of the planet Mars, what is the diameter of Mar

s?

1 answer:

pochemuha2 years ago

6 0

53,064 hope this helps
god bless

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Helppp me please IREADY

Morgarella [4.7K]

Hello there! The answer is the first option, 31/55.

To solve this, we don't even need to do any math. Note that fractions with the same numerator and denominator will be equal to 1.

Knowing this and looking at our second and fourth options, 55/55 x 111 and 31/31 x 111, these problems are the same as 1 x 111, which results in 111, which is not less than, leaving us with the third and first options.

The third option is 55/31, meaning we have more than a whole, so we are multiplying by a number greater than 1, making our answer over 111 and this option not correct.

This leaves the first option as your answer!

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2 years ago

A projectile is shot into the air following the path,h(x) = - 5t2 + 20t + 3. At what time will it reach a maximum height? t = 1

kramer

Answer:

t = 2

Step-by-step explanation:

Notice that this expression for the projectile's path is that of a quadratic function with negative leading term. The graph of it therefore consists of a parabola with the branches pointing down (due to he negative leading coefficient). Therefore, the maximum of such parabola will reside at its vertex.

Recall that the formula for the position of the vertex in a general parabolic function of the form: $y(x)=ax^2+bx+c$ , is given by the expression: $x_{vertex}=-\frac{b}{2a}$

In our case, the variable "x" is in fact "t", the leading coefficient ( $a$ ) is -5, and the coefficient for the linear term ( $b$ ) is 20.

Therefore, the maximum of the path will be when $t=-\frac{20}{2(-5)} =\frac{20}{10} =2$

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2 years ago

How many millions to get a billion? <br><br>A. 100<br>B.4000<br>C.1000<br>D.10

hoa [83]

Answer:

c

Step-by-step explanation:

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Jaime wants to know how fast she can type, so she times herself as she types a paper. The paper has 429 words in it, and Jaime t

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D) $400 is Saul's commission.

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2 years ago