Use a system of linear equations with two variables and two equations to solve.

175 students enrolled in a freshman-level chemistry class. By the end of the semester, 4 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed.

Answers

Answer 1

Answer:

35 failed and 140 passed

Step-by-step explanation:

Let  p = number who passed

f = number who failed

p+f = 175

4 times the number of students passed as failed, so we need to balance this to set it equal

4f = p

Substitute this into the first equation

4r+f = 175

5f = 175

5f/5 =175/5

f = 35

Now find the number who passed

p = 4f

p = 4*35

p =140


Related Questions

helpppppppppppppppppp​

Answers

how much was the second one?

Pure acid is to be added to a 10% acid solution to obtain 99L of a 20% acid solution. which amounts of each should be used ?

Answers

Answer:

x = amount of 100% acid solution (pure acid, no water)

y = amount of 10% acid solution (acid + water)

both amounts are in liters

Step-by-step explanation:

sub to astronaut gaming i have 27 subs if you need help finding i will help

Answers

Answer:

i subbed :P

Step-by-step explanation:

hope this helps </3

Someone plz help me with this I will mark you as brainlyest

Answers

(-2, -7), (-1,-4), (0,-1) (1,2)

All the Xs are the inputs and all the Ys are the outputs. (X,Y)

So I basically just used the Xs it gave us and then I put it in the function equation to solve for the outputs

José correctly answered 80% of the
questions on a language arts quiz. If he
answered 16 questions correctly, how ma
questions were on the language arts quiz

Answers

Answer:

20

Step-by-step explanation:

80% needs 20% more to be 100%  so we devide 16 by 4 to get the awnser for 20% witch is 4 so 16+4 is equal to 80% + 20% so 20

Answer:

20

Step-by-step explanation: 16 you need to 2  more question to get 100 so if you use your brain and imagine doing a test and you get an 80 percent and answered 16 correct go back to the test to see what you have

what's
b-a=
c-b=
im confused someone help pleaseee

Answers

Answer: n minus c would equal c c minus b would equal z

Step-by-step explanation:

2-1= plz help me i need help

Answers

Answer:

1 :)

Step-by-step explanation:

Ok so If and anchor descends -17.5 meters down in the ocean in 5 seconds, how much does it descend in 1 second?

Answers

-3.5 meters

explanation:
Divide -17.5 by 5 to get the distance the anchor travels in one second
-3.5 meters
Pls give the top person branly

Is 17/5 + square root of 64 greater than 8 + pi?

Answers

Answer:

I'm probably wrong 69??? Yea I'm definitely wrong

is (5,15) a solution of the equation y= 3x? (plz answer asap)

Answers

Answer:

Yes

Step-by-step explanation:

15 = 3(5)

15 = 15

You plug in the point

A closet is 3 yards wide. What is its width in inches?

Answers

Answer:

The closet is 108 inches wide.

Step-by-step explanation:

Because 1 yard is 36 inches, and 36 times 3 is 108.

The following table shows the annual profits for two small florist shops what shop had the greater total profit? How much greater was its profit?


Plz answer ASAP I will mark u brainlyest this is my 5th time asking please answer

Answers

Answer:

Shop A & $400

Step-by-step explanation:

-4.7 + 27.5 + 122.3 = $145.1 (Shop A)

-0. 2 + 14.5 + 130.4 = $144.7 (Shop B)

Difference = 145.1 - 144.7 = $0.4

0.4 × 1000 = $400

Shop A, $400

Have a nice day / night :)

This is a fast question i will give you brainlest if you annswer this question What is elapsed time also what 100 ÷ 300 no rush just try yiur best. Thank you​

Answers

Answer:

100÷300 =3 I know only this answer

The supermarket has 30 aisles. 60% are empty, without any shoppers. How many empty aisles are there in the supermarket?

Answers

Answer:

18

Step-by-step explanation:

to find the percentage of something you change the percent to a decimal and multiply it by the other number, so in this case you have 0.6*30 and you get 18.

hope this helped :))

Determine the intercepts of the graph please be sure

Answers

X = (7,0) y= (0,2)


Hope this helps!!

Answer:

X= (_7, 0)

Y= (0, 2

Step-by-step explanation:

We meet again

A deep sea diver descended from a rock that is 45 feet below

Answers

Diver descended 43 feet from the rock to the coral reef.
A deep sea diver descended from a rock that is 45 feet below sea level to a coral reef that is 88 feet below sea level.
To find : How far did the diver descend from the rock to the coral reef.
Solution : We have given
A deep sea diver descended below sea level = -45 feet .
A coral reef that is 88 feet below sea level = -88 feet.
Because we take the negative value below sea level( 0 ).
Difference = -45 - ( - 88)
Difference = -45 + 88 = 43
Diver descended 43 feet from the rock to the coral reef.
Therefore, Diver descended 43 feet from the rock to the coral reef.
If that is your question...

Find an equivalent ratio in simplest terms 44:80

Answers

Answer:

11:20

Step-by-step explanation:

Divided by 4

If (2"x3mx83x90)/(15x162X912 # 48. then (m, n) is:
N​

Answers

Answer:

pet for sale

Step-by-step explanation:

soory pls mark me brainbelela

Leon was asked to repaint the sign for his mother's ice cream shop, so he needs to figure out how much paint he will need. Determine the area of the ice cream cone on the sign. Round to the nearest tenth. 6 in 12 in.​

Answers

Answer:

50.1

The area of the composite figure is 50.1

Trust me

0.9 7/8 0.86 least to greatest work

Answers

Answer:

7/8, 0.86, 0.9

Step-by-step explanation:

Convert 7/8 to a decimal:

7 / 8 = .875

Solve:

.875, .86, .9

Or:

7/8, 0.86, 0.9

What is this expression equivalent to? Will Give Brainliest! Image is below.

Answers

Answer:

the correct answer is 4

Help me please! If you can explain it will help me a lot, if not then it’s okay.

Answers

Answer:

I cant help bc it doesnt show :((( sorrrrry

Step-by-step explanation:

D should be the answer

Help me if you can I would appreciate it thx

Answers

Answer: For the first one its J

The second one its H

Step-by-step explanation:

Write three expressions that are the equivalent of 5of 100, 000 , first as a numberthen in wordsfinally in scientific notation

Answers

Answer: 1) 500, 000

2) Five hundred thousand

3) [tex]5\times10^5[/tex]

Step-by-step explanation:

To express: 5 of 100, 000 in three expressions (First - number. second - word , third - scientific )

5 of 100, 000 = 5 x 100, 000 = 500, 000

In word - Five hundred thousand [ as place value of 5 =  hundred thousand]

In scientific notation, [tex]500, 000=5\times10^5[/tex]

Hence, the required expressions:

1) 500, 000

2) Five hundred thousand

3) [tex]5\times10^5[/tex]

The surface area of the rectangular prism can be found using the expression
6
x
3
+
4
x
2
+
12
x
. If the value of x is 3, what is the surface area, in square centimeters, of the prism?

Answers

Answer:

102

Step-by-step explanation:

6*3*3+4*3*2+12*2=102

hopefully, it's right

1.Find the product of 419 and 321. ​

Answers

Answer:

134499

Step-by-step explanation:

When someone asks for the product of something they are saying multiply the two values.

So,

419 x 321 = 134,499

Answer:

$134,499

Step-by-step explanation:

The product is the result of two numbers that are multiplied. In this case 419 and 321.

419 x 321 = 134,499

What does ± mean in math?
I WILL MAKE YOU A BRAINLIEST AND YOU WILL RECEIVE 50 POINTS!!!

Answers

positive or negative

To observe the effect of a categorical IV on a categorical DV (or variables recoded categorically from quantitative data), you would use the:

Answers

Answer:

Dummy Coding

Step-by-step explanation:

Dummy Coding is used to observe the effect of one categorical variable on another.

In this case, the first categorical variable is independent (ICV) while the other is dependent (DCV).

The dummy coding system makes use of two numerical values; 0 representing the absence of an effect and 1 representing the presence of that effect.

whats heavier a pound of cotton or a pound of stone

Answers

Answer:

None

Step-by-step explanation:

Both a pound

Answer:

Same weight

Step-by-step explanation:

There is a pound of each so they weight the same :)

Please answer quickly I really need this answer

Answers

D - 10

hope this helps :)

Answer:

The answer is 10

Other Questions
I think the answer is:- 2(5x+3)/(x+1)(x-5)(x+3)But another person said:10x-6/(x+3)(x+1)(x-5)Who is correct? *Btw for my answer the whole fraction is negative not just the top or bottom.* 5-5. Design an Ethernet network to connect a single client P C to a single server. Both the client and the server will connect to their workgroup switches via U T P. The two devices are 900 meters apart. They need to communicate at 800 M b p s. Your design will specify the locations of any switches and the transmission link between the switches.5-6. Add to your design in the previous question. Add another client next to the first client. Both connect to the same switch. This second client will also communicate with the server and will also need 800 M b p s in transmission speed. Again, your design will specify the locations of switches and the transmission link between the switches. A valuable cloth made only in China, called ____, was highly prized in Europe.Fill in the blank What is the answer? A, B, C, or D.No false answer please. This is an exam. .According to Hamilton, why is it essential that the new Republic establish public credit? This is a P.E. course. Why do you think you have to write an essay? He said,"I feel sorry for what I have said ," Any constructive criticism would be great :)Not just what looks off but how to fix it too ^^' Solve the following proportion.[tex]\frac{8}{11}=\frac{28}{X}[/tex] Describe the setting in which Kennedy delivers the speech Help me please I need to answer this What is the people and culture in bondi beach VOTING BRAINLIEST!! If I were to vote someone brainliest, would it take away my points or just give the other person points for free with no points taken from me? Explain in your own words what you think dopamine? Please help. Im kinda dumb Please help me solve this If the density of a substance is 2.18 g/mL, how would you find the density given that the mass is 0.987 kg and the volume is 4.52 x 102 mL? misty is driving on a scenic road trip, and the graph shows the number of hours traveled compared to the number of miles of the trip remaining. Use the graph below to the answer.Write an equation of the graph in slope-intercept form.A. y=-100/3x+450B. y=100/3x-450C. y=450x+100/3 Is a backpack a good resource for a rescue team? How does the brain receive information?Click to view the passage about brain power.A. From the five sensesO B. From computersC. From researchersD. From what people know