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4 years ago

A model rocket is built to scale is 3 cm = 5 m. If the model is 9.4 cm tall, how tall is the actual rocket?

1 answer:

8 0

Since there may be an easier way, you can find how many centimeters there may be for one meter by dividing both sides (3 cm = 5 m ) by 5.
$3 \div 5 = .6 \\ 5 \div 5 = 1$
So, .6 cm= 1 m
This will make it easy to divide to find the actual ticket size.
You have to find how many .6 there are in 9.4 by dividing:
$9.4 \div .6 = 15 \frac{2}{3}$
The rocket would be
$15 \frac{2}{3}$
m tall.

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Compute the value of the following improper integral if it converges. If it diverges, enter INF if it diverges to infinity, MINF

Phoenix [80]

Answer:

INF for first while D for second

Step-by-step explanation:

Ok I think I read that integral with lower limit 1 and upper limit infinity

where the integrand is ln(x)*x^2

integrate(ln(x)*x^2)

=x^3/3 *ln(x)- integrate(x^3/3 *1/x)

Let's simplify

=x^3/3 *ln(x)-integrate(x^2/3)

=x^3/3*ln(x)-1/3*x^3/3

=x^3/3* ln(x)-x^3/9+C

Now apply the limits of integration where z goes to infinity

[z^3/3*ln(z)-z^3/9]-[1^3/3*ln(1)-1^3/9]

[z^3/3*ln(z)-z^3/9]- (1/9)

focuse on the part involving z... for now

z^3/9[ 3ln(z)-1]

Both parts are getting positive large for positive large values of z

So the integral diverges to infinity (INF)

By the integral test... the sum also diverges (D)

3 0

3 years ago

ANSWER THIS PLS!!!!

astra-53 [7]

Answer and Step-by-step explanation: With the constant velocity motion formula, we can determine constant velocity of the object in motion whose data we collected:

x = x₀ + vt

Velocity can be calculated as:

$v=\frac{x-x_{0}}{t}$

$v=\frac{70-40}{10}$

v = 3 m/s

The beginning of the data collect, object is 40m away, then x₀ = 40.

So, equation modeling the object's path is x = 40 + 3t.

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4 years ago

Which equation shows the distance between points Q and P?

Lelu [443]

Answer:

Step-by-step explanation:

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3 years ago

What is the slope of the line that contains the points (7, -1) and (-2, -4)?

grigory [225]

Answer:

1/3

Step-by-step explanation:

Alright, so in this you want to use the slope formula: m=y2-y1/x2-x1. You plug the coordinates of the points into the formula to get the slope. (x1,y1) (x2,y2). So in this problem, 7 is x1, -1 is y1, -2 is x2, -4 is y2. So using the formula, you plug in y2 minus y1, divided by x2 minus x1.

So m (the slope) = -4- (-1) divided by -2-7.

2 negatives make a positive, so -4 + 1 is -3. -2-7 becomes -9. So this is now -3/-9. Again, 2 negatives make a positive, so this is now 3/9. Simplify and the answer is positive 1/3. Hope this helps!

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3 years ago

The width, w , of a rectangle is 13 its length, l .The width, w of the rectangle is 5 inches. What is the perimeter of the recta

sukhopar [10]

Area= 13x5=65
perimeter= 13+13+5+5=36

3 0

3 years ago

Read 2 more answers