Mathematics High School

hi can anybody help thx!

What is the volume of air in a lab of dimensions 8 mx 5 m x 3 m?

What is the mass of the air? (Density of air = 1.3 kg/m3)

Answers

Answer 1

Answer:

Volume of air = 120 m³

Mass of air = 156 kg

Step-by-step explanation:

Volume of air in a lab of dimensions,

= 8 x 5 x 3

= 120 m³

Mass of the air ?

Given : Density of air = 1.3 kg/m³

Formula : -

Density = Mass / Volume

Mass = Density x Volume

= 1.3 x 120

Mass = 156 kg

Related Questions

Your mom opens an account to save money for a family vacation. The account earns an animal interest rate of 4%. She earns $37 in simple interest after 6 months. How much money did she put in the account when she opened it? Use the formula: I=prt

Answers

Answer:

I = $ 0.74

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 4%/100 = 0.04 per year,

putting time into years for simplicity,

6 months ÷ 12 months/year = 0.5 years,

then, solving our equation

I = 37 × 0.04 × 0.5 = 0.74

I = $ 0.74

The simple interest accumulated

on a principal of $ 37.00

at a rate of 4% per year

for 0.5 years (6 months) is $ 0.74.

BRAINLIEST PLEASE

Find the value of x and y

Answers

Answer:

x=14.y=12

Step-by-step explanation:

which is an equation of the line with a slope of 1/4 and a y-intercept of -2?

Answers

Answer:

y = 1/4x -2

Step-by-step explanation:

If the slope is 1/4, then you must multiply x by 1/4. If we plug 0 into 1/4x, we get 0, but we need -2, so we must subtract 2 in the equation.

A line with a slope of 2 passes through the point (-8, 2). What is its equation in
point-slope form?

Answers

Hello!

y-y1=m(x-x1)

y-2=2(x-(-8)

y-2=2(x+8)

And that's our equation in point-slope form. Hope this helps!

~Just a joyful teen

[tex]SilentNature\\(GraceRosalia)[/tex]

whats the error? I SOLVED AND CHECKED. Is it correct? Im confused… pls help il will give brainliest

Answers

Answer:

32 in represents perimeter u added length times width once which would only give half of the rectangle

Step-by-step explanation:

2(3w+8+w) =32

6w+16+2w =32

8w+16 = 32

8w=16

w=2


8) A negative minus a negative will always, sometimes, never) be positive.
Give an example that proves your answer:
.

Answers

Poop is in a diaper diaper and

-3p + 8 = -13

HELLLLPP

Answers

Answer:

p=-7     :)

Step-by-step explanation:

-13-8=3p

-13+(-8)=3p

-21=3p

  ÷3

-7=p

Answer:

p=-32

Step-by-step explanation:

A.RIGHT


B.ACUTE


C.EQUIANGULAR


D.OBTUSE

Answers

The answer is d. obtuse

help me with this question

Answers

Answer:

∆QRS is an obtuse triangle

Step-by-step explanation:

[tex]x + 2x + 8x - 40 = 180 \\ 11x = 220 \\ x = 20[/tex]

[tex] < q = 20 \\ < r = 8(20) - 40 = 120 \\ < s = 2(20) = 40[/tex]

<R = 120° > 90° which makes this an obtuse triangle

4.Which is the best buy in the following cases. a) 4pens for Rs 56 or 6pens for Rs 90 give full step of answer​

Answers

Answer:

4 pens

Step-by-step explanation:

better value

In each case use the new theorems to arrange the letters measures from greatest to least

Answers

Answer:

answer is a,b,c

Step-by-step explanation:

A cruise ship travels 176 miles in 8 hours.

Speed = StartFraction distance Over time EndFraction

What is the ship’s speed?
2 miles per hour
22 miles per hour
168 miles per hour
1,408 miles per hour

Answers

Answer:

22mph

Step-by-step explanation:

Answer:

22 miles per hour

Divide 176 miles by 8 hours

The perimeter of the rectangle below is 104 units. Find the length of side RS.

Write your answer without variables.

S

3z

R

4z + 3

RS = ]

х

P

Q

Answers

Hhhhh hhhhhh hhhfddh yuh

I got the rest please answer for last question!

Answers

Answer:

y = -3x + 1

Step-by-step explanation:

see if that's correct? I'm not quite sure

I need help with 1 1/2 2 1/4

Answers

What do you need help with? Addition? Substraction?

If you’re doing addition, you would do it like this:

1 1/2 + 2 1/4 = 3/2 + 9/4 = 6/4 + 9/4 = 15/4 = 3 3/4

Answer:

1/8

Step-by-step explanation:

11/22  x 1/4 =1/8

i need help. ill mark brain to the first to answer.

Answers

Answer:

a and f

Step-by-step explanation:

1500 is double 750, which is the combined calories of lunch and breakfast, which is only 1 third.

Answer:

1st and 2nd options

Step-by-step explanation:

Daily total = (400+350)*3 = 2250

Dinner = 2250 * 2/3 = 1500

equation: 2/3*(x+400+350) = 2/3 * daily total = Dinner = x

what is the gradient of the line (-4, 10) to (-2, 6)
​

Answers

Answer:

（2,-4）

Step-by-step explanation:

-4＋2＝-2

10＋-4＝10-4＝6

20.
The total cost of 3 apples and 4 pears is £1.84
The total cost of 5 apples and 2 pears is £1.76
Work out the cost of one apple and the cost of one pear.

Answers

Answer:

an apple costs 0.24 and a pear costs 0.28

Step-by-step explanation:

      3a + 4p = 1.84                                 3a + 4p = 1.84

     -5a + 2p = 1.76   m(-2)                 -10a - 4p = -3.52

        3a + 4p = 1.84

 +   -10a - 4p = -3.52

       -7a          = -1.68

           a         = -1.68/-7

           a        =  0.24

   

       3a + 4p = 1.84

       3(0.24) + 4p = 1.84

       0.72  + 4p = 1.84

                   4p = 1.84 - 0.72

                    4p = 1.12

                      p = 0.28

The cost of an apple is £0.24 and the cost of pear is £0.28

What is a system of equations?

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Let a represent the cost of one apple and p represent the cost of one pear.

Then the system of equation will be;

     3a + 4p = 1.84                                

    -5a + 2p = 1.76   m(-2)                

-10a - 4p = -3.52

Solving both the equation;

-7a   = -1.68

a   = -1.68/-7

a   =  0.24

For solving p;

3a + 4p = 1.84

3(0.24) + 4p = 1.84

0.72  + 4p = 1.84

4p = 1.84 - 0.72

4p = 1.12

p = 0.28

Hence, the cost of an apple is £0.24 and the cost of pear is £0.28

Learn more about equations here;

https://brainly.com/question/10413253

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Amir is making pizza dough using a base recipe. For each cup of water, Amir needs to use 2 2/3

cups of flour. For each cup of flour he uses, Amir needs to use 1 1/2

tablespoons of olive oil. If he uses 4 cups of water, how many tablespoons of olive oil will he need?

Answers

4 cups of water would need 16 tablespoons of olive oil.

Each cup of water uses 2 2/3  cups of flour, while each cup of flour he uses, Amir needs to use 1 1/2  tablespoons of olive oil. Hence for 4 cups of water:

4 cups of water = 2 2/3  cups of flour × 4 cups = 32/3 cups of flour

32/3 cups of flour = 1 1/2  tablespoons of olive oil * 32/3 = 16 tablespoons of olive oil

4 cups of water would need 16 tablespoons of olive oil.

Find out more at: https://brainly.com/question/17178834

Mr. Benson’s gross pay is $789.18. The amount of social security deducted is 6.2% of gross pay. How much of his gross pay will be deducted for the social security tax?

Answers

Answer: $48.93

Step-by-step explanation: 789.18 x 0.062

Answer:

$48.93

Step-by-step explanation:

789.18 x (0.062)  = 48.92916      $48.93

took the test

anthony uses 8 fluid ounces of lemon juice in one batch of lemonade. How many batches can he mane with 1 pint of lemon juice

Answers

Answer:

Therefore, he can make 2 batches of lemonade with 1pint of lemon juice

Anthony can make 2 batches of lemonade with 1 pint of lemon juice.

In this problem, we'll determine how many batches of lemonade Anthony can make using a given amount of lemon juice. We'll be using the fact that 1 pint is equivalent to 16 fluid ounces.

Step 1: Convert Pints to Fluid Ounces

Since 1 pint is equal to 16 fluid ounces, we need to convert the given 1 pint of lemon juice into fluid ounces.

1 pint = 16 fluid ounces

Step 2: Calculate Batches

Now that we know 1 pint is equal to 16 fluid ounces, we can find out how many batches of lemonade Anthony can make using 8 fluid ounces of lemon juice per batch.

Number of batches = Total fluid ounces / Fluid ounces per batch

Substitute the values:

Number of batches = 16 fluid ounces / 8 fluid ounces per batch

Number of batches = 2 batches

Therefore, Anthony can make 2 batches of lemonade using 1 pint of lemon juice, given that he uses 8 fluid ounces of lemon juice in each batch.

This calculation ensures that he has enough lemon juice for the desired number of batches without any wastage.

To know more about Batches here

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For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the
cost, C, after h, hours of babysitting. How much will Nicole make after babysitting for 10
hours?

Answers

3 + 5h = c
3 + 5(10) = c
3 + 50 = c
53 = c
Nicole will make $53 in 10 hours of babysitting

find the sum of 5(−3.4k−7)+(3k+21) I AM SO CONFUSED!!!!!

Answers

Answer:

Your answer is   -14k - 14   or     k = -1

Step-by-step explanation:

-17k - 35 + 3k + 21   ( Combine like terms )

-14k - 14

-14k = 14

k = -1

Hope this helps!

Please help me in this!

Answers

Answer:

5000

ghsjdjdjdjdjdjdjdkdkdkdkdkdkdkdk

bindus choir class is performing a concert. she wants to buy as many tickets as she can afford. if tickets cost $3.25 each and she has $14.25 to spend, how many tickets can she buy?​

Answers

Answer:

4 tickets

Step-by-step explanation:

1 ticket is $3.25

2 ticket is $6.5

3 ticket is $9.75

4 ticket is $13

5 tickets is over and makes $16.25

Plss answerrrr thankyou!!

Answers

Answer:

Step-by-step explanation:

1 5/8 = 13/8

so

5/8 + 8/8

10/8 + 3/8

i could go on forever but.

do ya want to impress ya teacher?

500/800 + 800/800

and

2/4 + 4/4

PLSSS HLEPP ME OUTT ITS URGENTTTT!!​

Answers

increase in x results in the decrease in y

Answer:

• Decrease in x results in the increase in y

• Increase in x results in the decrease in y

can someone please help me i need help

Answers

Answer:

None

Step-by-step explanation:

It would be easier to ask your teacher instead of getting wrong answers from random people. Ever think of that :0

[tex]\sf -4(9x+9)[/tex]

Answers

Answer:

-36x-36x

Step by step explanation:

4(9x+9)

-36x -36x

Answer:

[tex]-36x-36[/tex]

Step-by-step explanation:

[tex]-4\left(9x+9\right)[/tex]

Apply distributive law:

[tex]-4\times \:9x-4\times \:9[/tex]

[tex]-36x-36[/tex]

Distribute:
-10(-r+7)-8(r+7)

Answers

Answer:

r+17=8r+7

r=10+8r

r=2

Step-by-step explanation:

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