Mathematics High School

A hot air balloon holds 2,200 cubic meters of helium. The density of helium is 0.1785 kilograms per cubic meter. How many kilograms of helium does the balloon contain, rounded to the nearest tenth of a kilogram?

Answers

Answer 1

Answer:

392.7

To get the answer multiply Density * Volume

Mass = 0.1785 * 2200

Mass = 392.7

Answer 2

The mass of the helium with a density of 0.1785 kilograms per cubic meter and volume of 2,200 cubic meters  is 392.7 kg

What is density?

The density of a substance is its mass per unit volume. It can be represented mathematically as follows:

density = mass / volume

Therefore,

mass of the helium = ?

density of the helium = 0.1785  kilograms per cubic meter

volume of helium = 2,200 cubic meters

Therefore,

mass = density × volume

mass =  0.1785 × 2200

mass = 392.7 kg

learn more on density here: https://brainly.com/question/4504994

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Related Questions

QUICK whoever gets the correct answer here’s a brainliest

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Answer:

HI

Step-by-step explanation:

Please help! Thank you! :D Giving brainlest

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Answer:

H  ≤  -2.4

Step-by-step explanation:

dark line pointing left at -24

Find the missing side length

Answers

Answer:

C) 9

Step-by-step explanation:

because it is half of 18 like 15 is half of 30.

A 4 sided polygon has diagonals that are perpendicular. The adjacent sides are congruent. What is the best name for the polygon?

1. Parallelogram
2. Rhombus
3. Isosceles Trapezoid
4. Kite

Answers

Answer:

A Kite

Step-by-step explanation:

I know, almost 2 years late. It's a kite and I don't know why.

find the total surface area of a cone having a diameter of base 8 cm and a slant height of 12 use pi 3.14 please make it quick

Answers

Answer:

2

Step-by-step explanation:

hello ht eanswer is 2

hi

2


Pretty sure it’s 2

which expression is equivalent to the phrase 4 times the sum of 7a and 3B

Answers

Answer:

4(7a + 3b) = 28a + 12b

Step-by-step explanation:

The sum of 7a and 3b: 7a + 3b

4 times the sum of 7a and 3b: 4(7a + 3b)

Expanding this out:

4(7a + 3b) = 28a + 12b

The daily cost of renting a car is $25.00 plus $0.30 per mile driven. What is the cost of renting the car for one day and driving at 75 miles?

Answers

Answer: The cost of renting the car for one day and driving at 75 miles = $ 47.5 .

Step-by-step explanation:

GIven: Daily cost of renting car = $ 25.00 + $0.30 per mile driven

Let x = Total distance traveled ( in miles).

Then total cost of renting (in $)= 25+0.30x

For x= 75 miles

The  total cost of renting (in $)= 25+0.30(75)

=25+22.5

= $47.5

Hence, the cost of renting the car for one day and driving at 75 miles = $ 47.5

help me if correct i will mark branliest

Answers

Answer:

c = 17

Step-by-step explanation:

a^2 + b^2 = c^2

= 8*8 + 15*15

= 64 + 225

= 289

= 289 SQUARED

= 17

Answer:

i THINK it is 15. im so so so super sorry if im wrong-have a nice day!

Step-by-step explanation:

Help?? Ty!! for the help much love!!

Answers

Your answer is C. :)

estimate 70 divided 30

Answers

Answer:

1.4 estimate: 1

Step-by-step explanation:

What is the slope of this line!

Answers

Answer:

-1/3

Step-by-step explanation:

Slope is rise over run which is -1 over 3

Answer:

-1/3

Step-by-step explanation:

So do rise over run. It goes down 1 and right 3, so the slope os -1/3.

You can also do the change in y over the change in x and use two coordinates.

I need help on this I would appreciate if you could Help me thank you

Answers

The points of intersection are at (3, 6) and (-1, -2).

Since both of these equations have y isolated, we can set them equal to each other:

2x=x²-3

We want all of the variables on one side, so subtract 2x:
2x-2x = x²-3-2x
0=x²-3-2x

Write the quadratic in standard form:
0=x²-2x-3

This is easily factorable, as there are factors of -3 that will sum to -2. -3(1)=-3 and -3+1=-2:
0=(x-3)(x+1)

Using the zero product property we know that either x-3=0 or x+1=0; therefore x=3 or x=-1.

Substituting this into the first equation (it is simpler):
y=2(3) = 6
y=2(-1)=-2

Therefore the coordinates are (3, 6) and (-1, -2).

Answer:

(x1, y1)=(-1, -2)

(x2, y2)=(3, 6)

Step-by-step explanation:

y=2x

y=x^2-3

Since both of the expressions 2x and x^2-3 are equal to y, set them equal to each other forming an equation in x

2x=x^2-3

solve the equation for x

x=-1

x=3

Substitute the given value of x into the equation y=2x

y=2 x (-1)

x=3      y=2 x 3

Solve the equation for y

y=-2

y=2 x 3      y=6

The possible solutions of the system are the ordered pairs (x, y)

(x1, y1)=(-1, -2)

(x2, y2)=(3, 6)

Check if the given ordered pairs are the solutions of the system of equations

-2=2x(-1)

-2=(-1)^2-3

6=2x3

6=3^2-3

Simplify the equalities

-2=-2

-2=-2

6=2x3

6=3^2-3

-2=-2

-2=-2

6=6

6=6

Since all of the equalites are true, the ordered pairs are the solution of the system

(x1, y1)=(-1, -2)

(x2, y2)=(3, 6)

Determine whether the two expressions are equivalent. If so, tell what property is applied. If not, explain why. 23+15 and 15+23

Answers

Answer:

Yes, they are equivalent

Step-by-step explanation:

Remember equivalent means equal

23 + 15 and 15 + 23 are the same numbers, you can switch them around by using the commutative property.

23 + 15 = 38

15 + 23 = 38

Pls help!! I promise ill mark brainlest

Answers

Answer:

A

Step-by-step explanation:

Answer:

b) g(x)=lxl+1l

Step-by-step explanation:

Krista spent 6 hours on her homework this weekend. She spent 24 hours
studying for her social studies test and 1 hours on her math homework. The
rest of her time she spent writing a book report. How much time did Krista spend
on her book report?

Pls help

Answers

Answer:

she spent 19 hours on her book report

Step-by-step explanation:

you take 6 hours subtract by 1 hour for math then you get 5 do then 24-5 Is 19

Hope this helps

Hey besties I need someone to answer this

Answers

Answer:

Its the first one y=x3 - 3

Step-by-step explanation:

Answer:

y = x – 3

Step-by-step explanation:

y = x³ – 3 [cubic function]

y = x² – 3 [square function / quadratic]

y = x – 3 [linear function]

y = √x – 3 [square root function]

Mariah has a spinner that has 10 equal sections, each containing a different number from 1 to 10. Mariah determines about how many times the spinner will land on a number that is greater than 7 in 250 spins, and her work is shown below.

P (number greater than 7) = StartFraction Number greater than 7 over Total number of sections EndFraction times number of spins = StartFraction 4 over 10 EndFraction (250) = 100.

What mistake did Mariah make, if any?
Mariah has the formula reversed; it should be the total number of sections over the numbers greater than 7.
Mariah should have used a 3 in the numerator because there are 3 numbers greater than 7.
Mariah should multiply by the number of sections in the spinner rather than the total number of spins.
Mariah calculated the prediction correctly and did not make any mistakes.

Answers

Answer:

Mariah should have used a 3 in the numerator because there are 3 numbers greater than 7.

Step-by-step explanation:

Edge my friends

Answer:

Its  B

Step-by-step explanation:

how many fifths must be added to 6/10 to make a whole​

Answers

Answer:

2/5

Step-by-step explanation:

10/10 = 1 Whole

You need 4/10 to get 1 whole

4/10 is equivalent to 2/5 because when you divide the numerator and denominator by 2 you the 2/5.

Isaiah is preheating his oven before using it to bake. The initial temperature of the oven is 75° and the temperature will increase at a rate of 10° per minute after being turned on. What is the temperature of the oven 17 minutes after being turned on? What is the temperature of the oven tt minutes after being turned on?

Answers

Answer:

12750 is the answer... god bless

Watch the video linked below.

Adding and Subtracting Equations with Algebra Tiles:

Write a 2-3 sentence reflection sharing what you learned from the video.

<< Read Less

Answers

Answer:

To solve an equation first you have to interpret the words / numbers. If it says 5 and a number is 7 then you have to write an equation, such as 5 + n = 7. When you solve it you have to subtract it from both sides.

5 + n = 7

-5.        -5

n = 2

FINND X AND Y PLS LOL ILL MARK BRAINILEST DONT GUESS THO
-2x + 5y = 60
x + 5y = 45

Answers

Answer:

(-5, 10)

Step-by-step explanation:

I used the substitution method.

Spiral Review Elena draws a scale drawing for a garden in her backyard. The scale drawing is 3 inches by 6 inches. The garden will be 12 feet by 24 feet.

What is the scale of the drawing in inches to feet?

Answers

1/4 bc if you take the fraction 3/12 and simply it’s 1/4

Help me please Help me please Help me please Help me please Help me please Help me please Help me please Help me please Help me please Help me please Help me please Help me please Help me please Help me please

Answers

Answer:

(1,0)

Step-by-step explanation:

0, Y-axis is the vertical (up and down) axis. The point isn’t moved up or down, therefore it’s zero. Would appreciate brainliest!

PLEASE HELP WITH QUESTIONS 6, 7, 8, AND 9 ONLY. ASAPPPP​

Answers

go to yt and watch one I bieleve it should be able to help you

A pencil pouch has 12 pencils and 30 led pencils, What is the ratio of
pencils to led pencils?

Answers

Answer: 12:30

Step-by-step explanation: Trust me. I got 100.

Answer:

6::15

Step-by-step explanation:

Factor 28+56t+28w, to identify the equivalent expressions.

Answers

Answer:

28(1 + 2t +w)

Step-by-step explanation:

28 + 56t + 28w.

Factor out a 28 from the expression.

28(1 + 2t + w)

Joyce uses 3/10 bag of chocolate chips for each batch of cookies she makes. What is the least number of batches Joyce can make if she has to open a second bag of chocolate chips?

Answers

Answer:

6 batches is the least amount.

Step-by-step explanation:

a taxi charges a $3.00 fee per ride plus $1.25 per mile ridden. Jason's fare for a taxi ride was $20.50. Write an equation and solve it to determine the number of miles (m) that Jason rode in the taxi.

Answers

Answer:

14 miles

Step-by-step explanation:

[tex]3 + 1.25x = 20.50\\1.25x = 17.5\\x = 14[/tex]

PLEASE HELP

Put the following angles into Corresponding, Alternate Interior, Alternate Exterior, or Consecutive;
<14 and<15; <5 and <7; <6 and<12; <5 and <11; <10 and <12; <3 and <13

WILL GIVE BRAINLIEST JUST ANSWER QUICK!!!

Answers

Answer:

so i think you mean:

14

15

5

7

6

2

5

11

10

12

3

13

Step-by-step explanation:

hope this helps!? :D

have a great day/night :)

Answer:

No answer, just to help with a brainly

-5x-4y=-7 on a graph

Answers

Answer:

Graph is attached below.

Step-by-step explanation:

If you want to solve for the variable x,

x = −4 / 5y + 7 / 5

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