please answer the questions 20 points

Please Answer The Questions 20 Points

Answers

Answer 1
1. Coefficients are represented either relative number of molecules or moles
2. when counting the number of atoms in the formula, you multiply each component by the coefficient
3. 72 is the total atoms

Related Questions

Amaya is excited to go to the used video game store to buy a game system later today. The game system usually costs x dollars, but today it's on sale at 15% off! Enter an expression that represents the sale price of the game system after the discount.

Answers

Answer:

x(85/100)

Step-by-step explanation:

100-15 = 85

x(85/100)

Answer:

0.85x

Step-by-step explanation:

Cost of video game = $x

Discount on sale = 15%

Price of game after discount :

(100 - 15)% * cost of video game

85% * $x

0.85x

Pls wat is 2.66 in fraction

Answers

Answer:

2 33/50

Step-by-step explanation:

Look at the decimal place.  It is in hundreths.  So, the decimal itself is 2 66/100.  However, once you simplify it, the answer becomes 2 33/50.

Hope this helps =-) have a good day!

x^2 - x -12 < 0
a) {-3}
b) (-infinity, -3) u (3, infinity)
c) (-3, 4)
d) [-3, 4]

Answers

C) is the correct answer

What is the width plz help needed quickly brainiest will be given to whoever answers correctly

Answers

Answer:

2/3

Step-by-step explanation

The length of the park has been cut off in the question but if it is one mile, like I think it is, then this is the answer.

A = 2/3

A = L x W

2/3 = 1 X ?

? = 2/3

Answer:

width = 2/3 mile

Step-by-step explanation:

area = L * W

where area = 2/3 mile²

       length  = 1 mile

         width = ?

2/3 = 1 (W)

2 = 3W

W = 2/3 mile

therefore the width = 2/3 mile

                     length = 1 mile

Wildlife conservationists are concerned that the deer population might not be constant across the National Forest. The scientists found that there were 144 deer in a 16-square-mile area of the forest. In another part of the forest, conservationists counted 117 deer in a 13-square-mile area. Yet a third conservationist counted 216 deer in a 24-square-mile plot of the forest. Do conservationists need to be worried? a. Why does it matter if the deer population is not constant in a certain area of the National Forest? b. What is the population density of deer per square mile? The unit rate of deer per 1 square mile is _______. Constant of Proportionality: Explain the meaning of the constant of proportionality in this problem: c. Use the unit rate of deer per square mile (or 푦 푥 ) to determine how many deer there are for every 207 square miles. d. Use the unit rate to determine the number of square miles in which you would find 486 deer.

Answers

Answer

9 deer per square- mile

Step-by-step explanation:.

Jane is training for a triathlon. After swimming a few laps, she leaves the health club and bikes 16 miles south. She then runs 12 miles west. Her trainer bikes from the health club to meet Jane at the end of her run. How much farther does Jane travel than her trainer? Answer the questions to find out. 1. What is the total distance Jane travels biking and running? Include units with your answer. Write your answer in the space below. 2. Use the Pythagorean theorem to write an equation for the distance Jane's trainer bikes. Write your answer in the space below. 3. Solve your equation to find the distance Jane's trainer bikes. Show your work. Write your answer in the space below. 4. How much farther does Jane travel than her trainer? Write your answer in the space below.

Answers

Answer:

can you Please put screen shot in there

Step-by-step explanation:

22.34 miles much farther does Jane travel than her trainer.

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, given that,

she leaves the health club and bikes 16 miles south.

Then, She then runs 12 miles west.

so, we have,

It must be, hypotenuse = 16 miles

                  base= 12 miles

We have to find, the height.

by Pythagorean theorem, we get,

the distance Jane's trainer bikes=√16²-12² miles

                                                       =√32 miles

                                                       =5.66 miles

So. she travels in total = 28 miles

22.34 miles much farther does Jane travel than her trainer.

To learn more on Pythagorean theorem click:

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A student has started a lawn care business. He charges $15 per hour to mow lawns and $20 per hour for gardening. Because he is still in school, he is only allowed to work for at most 20 hours per week. His goal is to make at least $300 per week.

a. create a system of equations or inequalities that models the situation. define the variables you use.

b. the graph shows one of the relevant equations in this situation. Draw the graph of the other relevant equation.

c. show all the points that represent the number of hours the student can work at each job and meet his goal.​

Answers

Answer:

:)

Step-by-step explanation:

15x=300

x will equal 20

20x=300

x will equal 15

Inequalities are used to represent unequal expressions

System of equations

Represent the number of lawns mown by x, and the number of gardens with y.

So, the system of inequalities are:

[tex]x + y \le 20[/tex] --- the number of hours worked, weekly[tex]15x + 20y \le 300[/tex] --- the earnings weekly

Graph

See attachment for the system of inequalities, and all the points that represent the hours worked

Read more about system of inequalities at:

https://brainly.com/question/14323743

Need more help!

I have to have 20 characters or more to be able to ask the question....

Answers

Answer:

m<QRS=48°

m<RSQ=69°

m<RQS=63°

Step-by-step explanation:

Since we know that the measures of the angles of any triangle is 180°, we can form this equation: 7a-1+10a-1+9a=180°

Then, we can use simple algebra to solve for a and plug in that value into the equations that the degrees represent to get our angle measures.

7a-1+10a-1+9a=180°

26a-2=180°

26a=182°

a=7

Now, plug in that value of a and you have your anlage measures!! Hope this helps!! :)

Whats the slope ?.please help me

Answers

Answer:

The slope is -3.

a tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an inital speed of 120 feet per second. which equation correctly models the balls height as a function of time

Answers

Answer:

An equation that correctly models the ball's height as a function of time is:

h (t) = - 16t ^ 2 + 130t + 2

Step-by-step explanation:

i hope this helps !

Answer:

h(t) = -16t^2 + 120t + 2

Step-by-step explanation:

If you have 3.15 pieces of chocolate and you give 1.6 pieces to your friend how many pieces of chocolate do you have left?

Answers

Answer:

1.55

Step-by-step explanation:

Solve the right triangle with the given information (round to the nearest tenth):

angle B =
b =
a =

Answers

Answer:

Step-by-step explanation:

m∠B = 90°

m∠C = 90° - 27° = 63°

cos27° = [tex]\frac{200}{b}[/tex] ⇒ b ≈ 224.5

sin27° = [tex]\frac{a}{b}[/tex] ⇒ a ≈ 101.9

Simplify.(6x−5+4x^2)+(2x−2)

Answers

Combine Like Terms

=6x + −5 + 4 x 2 + 2x + −2

=(4 x 2) + (6x + 2x) + (−5 + −2)

=4 x 2 +8x + −7

Answer - 4 x 2 + 8x + −7

Answer:

(6x-5+4x2) + (2x-2)

Step-by-step explanation:

what google said

If a=1, b = 2 and c=-3, find the value of 4a3b2

Answers

Answer:

48

Step-by-step explanation:

(4*1)(3*2)*2

4*6*2

48

Which of the following options is an equivalent function to f(x) = 4(3)2x? (2 points) f(x) = 36x f(x) = 4(9)x f(x) = 144x f(x) = 4(6x)

Answers

Answer:

f(x) = 4(9)x

Step-by-step explanation:

I took the test!!!

Answer:

Answer Down Below

Step-by-step explanation:

Q's Asked: Which of the following options is an equivalent function to f(x) = 4(3)2x?

Possible answers:

f(x) = 36^x

f(x) = 4(9)^x

f(x) = 144^x

f(x) = 4(6x)

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

My answer: I Think the correct answer is (B) .

The reason why I think the answer is (b) is bc:

[tex]f(x) = 4(3)^{2x}[/tex] =36

Calculations on How I got 36.

Frist we calculate the exponents [tex]\left(3\right)^2[/tex] --> [tex]\left(3\right)^2=9[/tex]--->  =9

then we Multiply 4*9 which gives us : 36.

The reason why Its (B) is bc:

f(x) = 4(9)^x

which means 4 times nine is...... 36. thats the answer (B) f(x) = 4(9)^x

Hope this helps :3

~~Wdfads~~

A person is 6 feet tall and casts a shadow of 3.2 ft at the same time a tree casts a shadow of 36.8 ft how tall is the tree?

Answers

Answer:

18.5

Step-by-step explanation:

Sandra bought 3/4 pound of carrots. she used 2/3 of them for soup. How many pounds of carrots did she use for the soup

Answers

Answer:

She used  14 pounds of carrots for soup.

Step-by-step explanation:

Answer me plzzzz fast ASAP

Answers

Answer:

this is payback for what you did here

Step-by-step explanation:

Multiple Choice
What are the equivalent fraction and decimal for 25%?
A. one over twenty-fiveand 0.25
B. twenty-five over twenty-fiveand 4
C. one-fourthand 0.25
D. three-fourthsand 0.4

Answers

correct answer is C, 1/4 and 0.25

PLS MAJOR HELP!!!!!!​

Answers

Answer:

D

Step-by-step explanation:

not completely sure though

C
I just took the quiz

The Verrazano Narrows Bridge has a main span of 4,260 feet. The Akashi Kaikyo Bridge has a main span that is 53% longer. What is the length of the main span of the Akashi Kaikyo Bridge to the nearest foot?

Answers

I’m lazy so just multiply 4,260 x 1.53 on a calculator and You’ll get the answer

The perimeter of rhombus EFGH is 48 cm and the measure of FEJ=60°. (Please help)

Answers

Answer:

Hmmmmmmmmm I donno please help

what’s the slope of (9,3) and (2,11)

Answers

Answer:

slope = - [tex]\frac{8}{7}[/tex]

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (9, 3) and (x₂, y₂ ) = (2, 11)

m = [tex]\frac{11-3}{2-9}[/tex] = [tex]\frac{8}{-7}[/tex] = - [tex]\frac{8}{7}[/tex]

Answer:

[tex]\boxed {m = -\frac{8}{7}}[/tex]

Step-by-step explanation:

Use the Slope Formula to help you determine the slope of two given points:

[tex]m =\frac{y_{2} - y_{1}}{x_{2} - x_{1}}[/tex]

First point: [tex](x_{1}, y_{1})[/tex]

Second point: [tex](x_{2}, y_{2})[/tex]

-Apply the two given points onto the formula:

First point: [tex](9, 3)[/tex]

Second point: [tex](2, 11)[/tex]

[tex]m =\frac{11 - 3}{2 - 9}[/tex]

-Solve for the slope:

[tex]m =\frac{11 - 3}{2 - 9}[/tex]

[tex]m =\frac{8}{-7}[/tex]

[tex]\boxed {m = -\frac{8}{7}}[/tex]

Therefore, the slope is [tex]-\frac{8}{7}[/tex].

What is the volume of a cone (in cubic inches) with a radius of 3 inches and a height of 6 inches?

Use 3.14 for π. Round your answer to the nearest hundredth.

Answers

Answer:

V≈56.55in³

Step-by-step explanation:

Answer:

56.55

Step-by-step explanation:

just took the test dattebayo.

Alonzo raises sheep and goats. Alonzo sells each sheep for $125 and each goat for $75. Alonzo raised 14 sheep and goats this year and sold them all for a total of $1,500. How many sheep and how many goats did Alonzo sell? ​

Answers

y = -3/2x + 5/2

Explanation-

slope intercept form is y = mx + b

so we have to solve the equation for y

2y = 5 - 3x

y = 5/2 -3/2x

or

y = -3/2x + 5/2

~ I hope this helped, and I would appreciate Brainliest. ♡ ~ ( I request this to all the lengthy answers I give ! )

HELP ASAP!right answer I’ll give you a crown

Answers

Answer:

[tex]y=-\frac{3}{2}x+1[/tex]

Step-by-step explanation:

Slope-intercept form means

[tex]y=mx+c[/tex]

where m is given its the slope which is [tex]-\frac{3}{2}[/tex] and we have the coordinates x and y which is (4, -5) and we need to find the value of c which is the y-intercept so we insert all these values into the equation so ,

[tex]y=mx+c[/tex]

[tex]-5 = -\frac{3}{2}(4)+c[/tex]

[tex]-5=-6+c[/tex]

[tex]c=1[/tex]

now we know the value of slope which is given [tex]-\frac{3}{2}[/tex] and we found the value of which is 1 so we put these values into our original slope-intercept form equation

[tex]y=mx+c\\\\y=-\frac{3}{2}x+1[/tex]

help what goes where? correct answer only pls :)​

Answers

Answer:

2(3 + w) = 6 + 2w

2(1 + w) = 2 + 2w

3(2 + w) = 6 + 3w

6(1 + w) = 6 + 6w

Step-by-step explanation:

2 x 3 = 6 and 2 x w = 2w: Therefore your answer is 6 + 2w

2 x 1 = 2 and 2 x w = 2w: Therefore your answer is 2 + 2w

3 x 2 = 6 and 3 x w = 3w: Therefore your answer is 6 + 3w

6 x 1 = 6 and 6 x w = 6w: Therefore your answer is 6 + 6w

If ABC ≌ DEF, and m∠A = (x + 30)°, m∠C = 45°, and m∠D = 80°, what is the m∠A? A. 15° B. 45° C. 50° D. 80°

Answers

Answer:

I think its 80 not sure

Step-by-step explanation:

The measure of ∠A will be 50°.

What is mean by Triangle?

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

Δ ABC ≅ Δ DEF

And, m ∠A = (x + 30)°, m ∠C = 45°, and m ∠D = 80°

Now,

Since, Δ ABC ≅ Δ DEF

Hence,  m ∠A = m ∠D

Substitute all the values, we get;

m ∠A = m ∠D

x + 30 = 80

Subtract 30 both side, we get;

x = 80 - 30

x = 50°

Thus, The measure of ∠A will be 50°.

Learn more about the triangle visit:

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Which expression has the same sum as the one below - 15 + 16

Answers

Answer:

6+(-15)

Step-by-step explanation:

Translate the sentence into an inequality..
The quotient of y and 7 is at least 18.

Answers

Answer: [tex]\frac{y}{7} \geq 18[/tex]

Step-by-step explanation:

Key things to remember:

- quotient signals dividing

- at least means greater than or equal to, so we use the greater than or equal to sign

Applying this to the problem, we can translate into a simpler sentence:

y divided by 7 is greater than or equal to 18 --> which leads us to the inequality above

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