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2 years ago

HELP QUICKLY!!!! WILL MARK BRAINLIEST!!!

2 answers:

4 0

The volume of a cone is equal to (pi*r^2*h)/3

(pi*25*2)/3= 52.35987...

Density = mass/volume

d= 6 grams/ 52.35987 cm^3= 0.11459...

Final answer: D

stepan [7]2 years ago

4 0

Answer:

$0.11g/cm^3$

Step-by-step explanation:

We are given that

Mass of cone=6g

Radius of cone=5 cm

Height of cone=2 cm

We have to find the density of cone.

Formula:Volume of cone= $\frac{1}{3}\pi r^2 h$

Volume of cone= $\frac{1}{3}\times 3.14\times 25\times 2=52.33 cm^3$

We know that

Density = $\frac{mass}{volume}$

Density of cone= $\frac{6}{52.33}=0.11g/cm^3$

Answer: $0.11g/cm^3$

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At 8:00 am, here's what we know about two airplanes: Airplane #1 has an elevation of 80870 ft and is decreasing at the rate of 4

wel

Let's begin by listing out the information given to us:

8 am

airplane #1: x = 80870 ft, v = -450 ft/ min

airplane #2: x = 5000 ft, v = 900ft/min

We must note that the airplanes are moving at a constant speed. The equation for the airplanes is given by:

$\begin{gathered} E=x_1+vt----1 \\ E=x_2+vt----2 \\ where\colon E=elevation,ft;x=InitialElevation,ft; \\ v=velocity,ft\text{/}min;t=time,min \\ x_1=80,870ft,v=-450ft\text{/}min \\ E=80870-450t----1 \\ x_2=5,000ft,v=900ft\text{/}min \\ E=5000+900t----2 \end{gathered}$

We equate equations 1 & 2 to get the time both airlanes will be at the same elevation. We have:

$\begin{gathered} 5000+900t=80870-450t \\ \text{Add 450t to both sides, we have:} \\ 900t+450t+5000=80870-450t+450t \\ 1350t+5000=80870 \\ \text{Subtract 5000 from both sides, we have:} \\ 1350t+5000-5000=80870-5000 \\ 1350t=75870 \\ \text{Divide both sides by 1350, we have:} \\ \frac{1350t}{1350}=\frac{75870}{1350} \\ t=56.2min \\ \\ \text{After }56.2\text{ minutes, both airplanes will be at the same elevation} \end{gathered}$

The elevation at that time (when the elevations of the two airplanes are the same) is given by substituting the value of time into equations 1 & 2. We have:

$\begin{gathered} E_1=80870-450t \\ E_1=80870-450(56.2) \\ E_1=80870-25290 \\ E_1=55580ft \\ \\ E_2=5000+900t \\ E_2=5000+900(56.2) \\ E_2=5000+50580 \\ E_2=55580ft \\ \\ \therefore E_1\equiv E_2=55580ft \end{gathered}$

6 0

2 months ago

At a high school the student government is made up of 5 seniors, 4 juniors, 3 sophomores and 2 freshmen. If there are 8 seniors,

hjlf

Answer:

32598720

Step-by-step explanation:

Combination for the school government requires:

5 out of 8 seniors = 8! / 3!5! = 6*7*8/2*3 = 7*8 = 56
4 out of 9 juniors = 9! / 4!5! = 6*7*8*9/2*3*4= 7*2*9 = 126
3 out of 12 sophomores = 12! / 3!9! = 10*11*12/2*3 = 10*11*2 = 220
2 out of 7 fishermen = 7! / 2!5! = 6*7/2 = 21

So number of total ways is:

56*126*220*21 = 32598720

5 0

2 years ago

Please help me so i dont fail

Nina [5.8K]

I think it would the last one G

7 0

2 years ago

Read 2 more answers

Someone please help!!!!! WILL MARK BRAINLIEST

adoni [48]

Answer:

y = (1/2)x + 1

Step-by-step explanation:

linear line equation is y = mx + b

Where m is the slope and b is the y-intercept when x is 0.

For m, m is change in y(delta y) over change in x(delta x).

We are given two points: (0,1) and (4,3).

m = (y2 - y1)/(x2 - x1) = (3-1)/(4-0) = 2/4 = 1/2

y = (1/2)x + b

Now plug in (0,1) into above equation to find b value.

1 = (1/2)0 + b => b = 1

Final equation is y = (1/2)x + 1

3 0

2 years ago

Put in order from least to greatest 2/3 0.6 - 5/6 - 6.6

valentina_108 [34]

-6.6.-5/6.0.6,2/3"""""""""""""""""
Heres oyur answer i hope that can help u
Believ in you self
"""""""""""""""""""""

4 0

2 years ago