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3 years ago

a person who weighs 100 pounds on earth weights 16.6 Ib. on the moon what is the independent variable

1 answer:

3 0

To find weight you use the equation w=m*a. W is weight, m is mass, a is acceleration due to gravity. Since acceleration due to gravity is different on the moon than it is on earth that is the dependant variable. Since the persons mass does not change that is the independent variable

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How many digits follow the decimal point in the product of 23.893 and 47.21 ?

DENIUS [597]

The product is 1,127.98853 ⇨ 5 digits follow after the decimal point. Hope that helps

3 0

3 years ago

Read 2 more answers

9/20

NISA [10]

For this case we must find the solution of the following quadratic equation:

$x ^ 2 + 5x + 7 = 0$

Where:

$a = 1\\b = 5\\c = 7$

Then, the solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting the values:

$x = \frac {-5 \pm \sqrt {5 ^ 2-4 (1) (7)}} {2 (1)}\\x = \frac {-5 \pm \sqrt {25-28}} {2}\\x = \frac {-5 \pm \sqrt {-3}} {2}$

By definition we have: $i ^ 2 = -1$

$x = \frac {-5 \pm \sqrt {3i ^ 2}} {2}\\x = \frac {-5 \pm i \sqrt {3}} {2}$

Thus, we have two complex roots.

Answer:

The equation has no real roots.

4 0

4 years ago

Multiply.<br> (2x2 – 3x + 1)(x2 - 4x – 3)

Arisa [49]

Answer:

2x^4−11x^3+7x^2+5x−3

Step-by-step explanation:

The ^ means exponent

3 0

3 years ago

Find the value of n .<br> 6/n = 24/28<br> y = ___.

il63 [147K]

Answer:

$n=7$

Step-by-step explanation:

Cross multiply, isolate the variable, and divide by the coefficient to solve.

$\frac{6}{n}=\frac{24}{28} \\ \\ 24n=168 \\ \\ n=7$

Plug back in to check.

$\frac{6}{7}=0.857142857 \\ \\ \frac{24}{28} =0.857142857$

5 0

4 years ago

this year, the winner of the new york marathon ran the 8 kilometer event in 24 minutes. what is the runners unit rate

DedPeter [7]

Based on the given situation above, the given values are 8 kilometers and 24 minutes. To simplify these values, we will come up with the result of 1 km in 3 minutes. Therefore, the winner of the New York marathon ran 0.33 kms per one minute so the runners unit rate is 0.33kms/minute.

3 0

3 years ago