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3 years ago

50 POINTS!!!!! HELP PLEASE!!! HELP IS NEEDED!!!!!!!!!

2 answers:

5 0

You need to drive 6 hours
If you start at 11PM, you'll get to the destination at 5 AM
Using , we get . Solve for 't' to get . So it takes 6 hours which means that you'll arrive at 11 pm + 6 hours = 5 am
The fact that you start at 11pm is not important.

D = rt

330 = 55t

330/55 = t

6 = t

Assuming that you make no stops, it will take you 6 hours to make the trip if

you keep the same rate per hour.

If starting at 11pm, you will arrive at 5am.

Ksivusya [100]3 years ago

4 0

Answer:

the domain is the numbers that would satisfy x

since x = the number of hours

it would be all real numbers between 0 and 6

Step-by-step explanation:

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When 15 times a number is.

lubasha [3.4K]

Answer:

Step-by-step explanation:

15x + 16 = 48 - x

16x = 32

x = 2

Plug two in and it fits right in :)

8 0

4 years ago

Is 10/9 closer to 0, 1/2, or 1

Setler [38]

If the question had asked what is 9/9 closer to you would say 1. When you increase the numerator by one digit go higher than 1.
10/9 = 1.11111111

so it is closer to 1 than to anything else

6 0

3 years ago

Multiple-Choice Integration, Picture Included, Please Include Work

ValentinkaMS [17]

$\displaystyle\int_0^2\sqrt{4-x^2}\,\mathrm dx$

Recall that a circle of radius 2 centered at the origin has equation

$x^2+y^2=4\implies y=\pm\sqrt{4-x^2}$

where the positive root gives the top half of the circle in the x-y plane. The definite integral corresponds to the area of the right half of this top half. Since the area of a circle with radius $r$ is $\pi r^2$ , it follows that the area of a quarter-circle would be $\dfrac{\pi r^2}4$ .

You have $r=2$ , so the definite integral is equal to $\dfrac{2^2\pi}4=\pi$ .

Another way to verify this is to actually compute the integral. Let $x=2\sin u$ , so that $\mathrm dx=2\cos u\,\mathrm du$ . Now

$\displaystyle\int_0^2\sqrt{4-x^2}\,\mathrm dx=\int_0^{\pi/2}\sqrt{4-(2\sin u)^2}(2\cos u)\,\mathrm du=4\int_0^{\pi/2}\cos^2u\,\mathrm du$

Recall the half-angle identity for cosine:

$\cos^2u=\dfrac{1+\cos2u}2$

This means the integral is equivalent to

$\displaystyle2\int_0^{\pi/2}(1+\cos 2u)\,\mathrm du=2u+\sin2u\bigg|_{u=0}^{u=\pi/2}=\pi$

4 0

3 years ago

How many 1/2 cm cubes will fit in a cube with a side length of 8 cm?

torisob [31]

Answer:

4096

Step-by-step explanation:

0.5×0.5×0.5=0.125cm³

8×8×8=512cm³

512÷0.125=4096

7 0

3 years ago

A certain kind of spider is about 8 millimeters wide. How many of these spiders would fit side by side on a meter stick?

Vladimir79 [104]

Because there are 1000 millimeters in one meter, we can divide 1000 by 8 to see that 125 spiders that are 8mm long would fit side by side on a meter stick.

7 0

4 years ago