The main function of this human body system is to---

a.exchange gases with the environment

b.chew food as it enters the mouth

c.sense odors in the environment

d.trap particles that enter the nose

Answers

Answer 1
a. exchange gases with the environment... please make me the BA!

Related Questions

A pyramid has a square base with sides that measure 10cm and a height of 14cm. What is the slant height of the pyramid?
A)17.2 cm
B)14.9 cm
C)13.2 cm
D)12.1 cm

Answers

the answer is A im pretty sure

The solution is,  the slant height of the pyramid is 14.9 meters.

What is Pythagorean theorem?

Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a2 + b2 = c2.

here, we have,

we know that,

The slant height is the height of a triangle making up the base of the pyramid.

We can imagine a right triangle with one leg being a vertical line from the peak of the pyramid going down to the center of the base, and the other leg going from the center of the base to the center of one edge of the base.

And finally, the hypotenuse will join the ends of those 2 lines together and will also be the slant height of the pyramid.

Then we can easily use the Pythagorean theorem to determine the slant height.

So, S = sqrt((10/2)^2 + 14^2)

S = sqrt(5^2 + 14^2)

S = sqrt(25 + 196)

S = sqrt(221)

S = 14.9

So the slant height of the specified pyramid is 14.9 meters.

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54 3/4 - 1 3/8
dont even try using a calculator lol the answer will be wrong

Answers

Answer:

54  3/ 4   −1  3/ 8  =53  3/ 8

hope this helps

if u need step by step answer just tell me

Sam spent $1.08 to make 18 copies at office max.At that rate how much will he pay to make 40 copies?

Answers

Answer:

$2.40

Step-by-step explanation:

If we know it is $1.08 to make 18 copies. We can do the math to find the rate of 1 copy. This would be by doing 1.08/18=0.06. So, it costs $0.06 to make 1 copy. Now, multiply that by 40 copies 0.06x40=2.40. The cost of 40 copies is $2.40.

2.40 you basically dived

If u anserw correctly ill give u 20 points and put u the brainlest

Answers

Answer:

60%

Step-by-step explanation:

60% of 40 is equal to 24 squares

solve for c: 16c - 7 = 13.32

Answers

16c - 7 = 13.32

16c = 13.32 + 7

16c = 20.32

c = 20.32/16

c = 1.27

Write the standard numeral for (6 × 100) + (4 × 1).

Answers

Answer:

(6x100)=600+4=(4x1)

Step-by-step explanation:604

ΔDEF is similar to ΔABC as shown below, and x represents the length of segment EF.

Which proportion can be used to find, x, the length of segment EF?
a. 2/5 = 6/x
b. 5/6 = x/2
c. 5/2 = 6/x
d. 6/5 = 2/x

Answers

Explaining- when you look at the vertex to the other vertex you see the length and that is when you multiply

Answer- A

PLS HELP I NEED HELP REAL BAD
PLS PUT LEGIT ANSWERS NO ANSWERS THAT SAY HI OR SOMETHING ELSE

Answers

Answer:

b. 30 should be it

Step-by-step explanation:

please give brainliest

Answer:

45 (tip: find out the pattern of the graph like 90 + 25 is 105 so if you could have subtract 60 by 25, you would get 45.)

Lizzy lives on a farm and has 12 goats and 10 pigs. What is the ratio of pigs to goats in simplest terms?

Answers

Answer:

5/6

Step-by-step explanation:

10/12 divided by 2 equals 5/6

Coach Hayes goes to a sporting goods store to purchase mouth guards for his team. There are two packages of mouth guards available for him to select: ten Adidas mouth guards for $14.50 and fifteen Nike mouth guards for $21.45. Coach Hayes needs to buy 60 mouth guards. In total, how much money with he save by purchasing 60 mouth guards from the cheapest package?

Answers

Answer:

12h - 33 = 99

Step-by-step explanation:

The answer is 85.8 because the cheapest package is the nike one and if you multiply that times 4 which will give you 60 mouth gaurds, the amount of money will be 85.8

Last month you spent $30 on clothing. This month you spent 150% of what you spent last month. How much did you spend this month?

Answers

Answer:

you spent 45 dollars this month

you’ve spend 45 dollars this month

Several students measured a 25-mm-long nail and wrote the measurements shown in the table below. Whose measurement had the greatest percent error? Round to the nearest percent. (I need help ASAP!! Thanks!! <3)

Answers

Answer:

Step-by-step explanation:

The decibel level of the sound of a monster truck is

Further explanation:

Decibel is defined as a unit which is used to measure the relative loudness or intensity of the sound.

In the question it is given that the intensity of the sound of a monster truck is watts per square inch.

The formula which is used to calculate the decibel level of a sound is as follows:

Here, represents the intensity of the sound of a monster truck and represents the threshold intensity of hearing at .

The value of the threshold intensity of hearing at is watts per square meter.

This implies that the valiue of is watts per square meter.

The intensity of the sound of a monster is given in unit of per square inch.

The relation between per square inch and per square meter is as follows:

So, the intensity of a monster truck is converted into per square meter as follows:

This implies that the value of is watts per square meter.

Now, substitute the value of and in the equation .

The approximated value of the above equation is as follows:

From the above calculation it is concluded that the decibel level of the sound of a monster truck is .

Learn more:

A problem to complete the square of quadratic function brainly.com/question/12992613

A problem to determine the slope intercept form of a line brainly.com/question/1473992

Inverse function brainly.com/question/1632445

Answer details

Grade: Middle school

Subject: Mathematics

Chapter: Logarithms

Keywords: Logarithms, sound, intensity, power of sound, watts, decibel, decibel level, monster truck, logarithm function, unit, conversion of unit, square inch, square meter.

ANSWER NOW PLEASE
7th grade math

A plumber has a very long piece of pipe that is used to run city water parallel to a major roadway. The pipe is cut into two sections. One section of pipe is 12 ft. shorter than the other. If 3/4 of the length of the shorter pipe is 120 ft., how long is the longer piece of the pipe?

Answers

Answer:

172 ft

Step-by-step explanation:

120 + the other 1/4 is 160 160 + 12 is 172

Answer:

172 ft

Step-by-step explanation:

What are the characteristics of a circle?
plzzzzzzzz help me

Answers

Answer:

1. chord

2. Diameter

3. radius

Step-by-step explanation:

I am not super sure about the first one, my apologies.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Which expression can be used to find the product of 720?

Question 2 options:

(7 x 2) x (3 x 5)


(8 x 9) x (2 x 5)


(9 x 7) x (2 x 5)


(9 x 8) x (3 x 5)

Answers

Answer:

(8 x 9) x (2 x 5) is the correct answer.

Step-by-step explanation:

(8 x 9)= 72

(2 x 5)= 10

72 x 10 = 720

(8 x 9) x (2 x 5) is the expression can be used to find the product of 720

What is Expression?

An expression is combination of variables, numbers and operators.

We need to find the expression can be used to find the product of 720

Product is nothing but multiplication.

Multiplication is a method of finding the product of two or more numbers

(8 x 9) x (2 x 5)

Eight time of nine times two times of five

Eight times of nine is seventy two and two times of five is ten

72×10

Seventy two times of ten is Seven hundred twenty

720

Hence, (8 x 9) x (2 x 5) is the expression can be used to find the product of 720

To learn more on Expressions click:

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help please
Divide. 64.2 ÷ 100

Answers

Answer:

0.642 is the answer please give brailiest

Answer:

0.642 calculator bc I'm stüpìd

WRITE EACH EXPRESSION using expression using exponents

1. (-5)(-5)(4)(4)(4)
2. X × Y × X × X × Y × X
3. 4 × 4 × a × a × b × 3 × 4 × 3 × a

Answers

Answer:

1. 1600

2. [tex]X^{4} Y^{2}[/tex]

3. 576[tex]a^{3}[/tex]b

111x6 divided by 5 +10 -78

Answers

Answer:

65.2

Step-by-step explanation:

Calculator

Answer:

-10.57

Step-by-step explanation:

I need help
Link in the comments

Answers

Answer:

ok

Step-by-step explanation:

There is no link in the comments

Find the volume of a hemisphere with a radius of 8. Round to the nearest tenth.

Answers

Answer:

V(hemisphere) = 1072.3in^3

Step-by-step explanation:

To find the volume of a hemisphere, we will have to take the volume of a sphere as a whole and divide it by 2. This is because a hemisphere is half of a sphere.

The volume of a sphere is:

[tex]V(sphere) = \frac{4}{3} \pi r^3[/tex]

Let's plug in the radium of 8 into the equation and solve:

[tex]V(sphere) = \frac{4}{3} \pi (8)^3\\V(sphere) = \frac{4}{3}\pi 512 \\V(sphere) = 2144.660585[/tex]

Now, divide it by 2

V(sphere) = (2144.660585)/2

V(hemisphere) = 1072.3in^3

I hope this helps!!

- Kay :)

Answer:

the answer is V(hemisphere) = 1072.3in^3

Step-by-step explanation:

Write the equation of the line that passes through the points (1, 7) and (5, 15) using function notation.

Answers

2x+5 is the answer hope this helps

How can you find the distance from a point to the x axis

Answers

Answer:

be a big brain

Step-by-step explanation:

Teresa's restaurant bill comes to $29.99 before tax. If the sales tax is 6.25% and she tips the server 20%, what is the total cost of the meal? $_______________________________

Answers

Answer:

37.86

Step-by-step explanation:

The answer

The answer: 37.86

Hope this helps!!

What is 4,771,000,000 in scientific notation?

Answers

Answer:

4.771 × 109 on top

For the story, select an equation that describes the relationship between the two quantities.
1. Diego collected x kg of recycling. Lin collected 2/5 more than that.
2. Lin biked x km. Diego biked 3/10 less than that.
3. Diego read for x minutes. Lin read 4/7 of that.

Answers

Answer:

hope this helps

Step-by-step explanation:

1 i believe because its the only one that says "more than". The other two say less than.

Answer:

1.

Step-by-step explanation:

Is this a function----------------

Answers

Answer:

yes

Step-by-step explanation:

hope this helps, pls mark brainliest :D

Answer:

Yes it is a function ------

For the following equations, draw a picture of the tiles on an Equation Mat. Then use “legal” moves to simplify and solve for the variable.


a. -2+x = -x+2


b. 2+3x = x+7

Answers

I can solve these for you

a:
-2+x=-x+2
+2 +2
x=-x+4
+x +x
2x=4
— —
2 2
x=2

so the solution to a is x=2


b:
2+3x=x+7
-2 -2
3x=x+5
-x -x
2x=5
__ __
2 2
x=2.5, or 2 1/2

so the solution to b is x= 2 1/2

This is very very important

Answers

Answer: 784 cubic things. lol is this iready

Step-by-step explanation:

Old Granny Adams left half her money to her granddaughter and half that amount to her grandson. She left a sixth to her brother, and the remainder, $1,000, to the dogs’ home. How much did she leave altogether?

Good Luck!!! First Right Answer gets brainliest!!!

Answers

Answer:: She left $12,000.

Step-by-step explanation:

$12,000

Old Granny Adams left half her money to her granddaughter and half that amount to her grandson. She left a sixth to her brother, and the remainder, $1,000, to the dogs' home. How much did she leave altogether?

She left $12,000! she left the granddaughter $6,000 and her grandson $3,000 and her brother $2,000 the rest ($1,000) to the dogs home

The Taco Hut sells 2 tacos for $2.18, 3 tacos for 3.00, 4 tacos for 3.82, 5 taocs for 4.64. if this patern goes on, how much wound 8 tacos.

Answers

Answer: $7.10



(2,2.18) (3,3) (4,3.82) (5,4.64)

First find the rate of change using y1-y2/x1-x2


3-2.18/ 3-2

=0.82

Next, find the y-intercept or the flat rate

Use the formula y-y1=m(x-x1)

y-3=0.82(x-3)

y-3=0.82x-2.46

y=0.82x+0.54


Next, replace x with 8 for 8 tacos

y=0.82(8)+0.54

y=7.1
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Especiallyif that country is less developed? Based on the map and your knowledge of history, which of the following conclusions can be drawn about this map? Susan and Kelvin each receive $100$100 as a gift.Part ASusan buys a movie ticket for $12.50$12.50 and 33buckets of popcorn that cost $14.20$14.20 each with her $100$100. Which statement is true? historical movement from segregation to inclusion PLEASE HURRY!! Why does it feel cooler at 90F when the relative humidity is 30% compared to the same temperature and the relative humidity is 80%?Group of answer choicesBecause the drier air evaporates moisture off your skin more easily.Because the lower humidity brings down the temperature.There is no real difference because the temperature is the same.Because there is less air movement at 80% humidity. Dana needs to buy a bathroom mirror that is 5 feet wide and 7 feet long. 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