Suppose 35% of students in a class have blue eyes. Five blue-eyed students join the class. Now 48% of the students have blue eyes. How many students were originally in the class?

Answers

Answer 1

Answer:

x :      35

x +5 : 48

35x+175=48x

175= 48x-35x

13x=175

x=175/13

x=13 students


Related Questions

Old Farmer MacDonald wants to build a pen to keep his chickens in. He has 36 meters of fence and plans to make a rectangular pen. Complete the chart to help Old MacDonald decide how to make his chicken pen so that he has the maximum area.

Answers

Answer:

2 = 18

4 = 9

6 = 6

8 = 4.5

10 = 3.6

12 = 3

14 = 2.57 (2.6 simplified)

16 = 2.25 (2.3 simplified)

Step-by-step explanation:

You can solve this by dividing 36 (the whole amount of meter of fences)

by each number of the length

area                    width

36 divided by 2 = 18

36 divided by 4 = 9

36 divided by 6 = 6

36 divided by 8 = 4.5

36 divided by 10 = 3.6

36 divided by 12 = 3

36 divided by 14 = 2.57 (2.6 simplified)

36 divided by 16 = 2.25 (2.3 simplified)

What is the contra post I’ve of this conditional statement

Answers

Answer:

Option (2)

Step-by-step explanation:

Statement p → If an animal is an adult insect

Statement q → It has six legs

Contrapositive statement means: -q → -p

"If not q then not p"

Therefore, costrapositive statement of the given conditional statement will be,

If the animal does not have six legs, then it is not an adult insect.

Option (2) will be the answer.

Damell had 27 coins in his pocket. He lost some. Write an expression that shows how many coins Darell lost.
A.27 -
B. n - 27
C. 27+n
D.n+27

Answers

Answer:

esl b comafio   qe vasu  slair beniaen

Step-by-step explanation:

what is the negative reciprocal of 7/9​

Answers

Answer:

-9/7

Step-by-step explanation:

A reciprocal is literally just flipping the fraction, so your notmal reciprocal would be 9/7, but in this case it‘s asking for a negative reciprocal, so it would be -9/7

10. Which of the following describes two
triangles that are similar to one another?

Answers

Answer:

It's d

Step-by-step explanation:

i did it and got it right

Andre drives a bike for 4 hours covering 160 km. Find the distance covered by him in 7 hours.

Answers

Answer:

I think is 280km :))))))

Answer:

Andre covered 280km.

Step-by-step explanation:

I would say make a proportion:

?= distance covered

4 - 160

7 - ?

Solve: 7×160÷4=280.

What is the median age of presidents at inauguration shown in the diagram?*
1 point
Age At Inauguration
Age
President
William Howard Taft 51
Zachary Taylor 64
John Adams
61
James Madison 57
Woodrow Wilson 56
Thomas Jefferson 57
Andrew Johnson 56
Bill Clinton
46
Rutherford B Hayes 54
054
Yo

Answers

Answer:

55

Step-by-step explanation:

As per given diagram we have:

The greatest value = 64The smallest value = 46

Median age is:

(64 + 46)/2 = 110/2 = 55

X(x+1)=1 it’s quadratic equations

Answers

x=1 i need 20 characters x=1
x2+x=1
x2+x-1=0
then do the quadratic formula
u will get
X= 1.6180.... or X= -0.618033.

Niall hikes 250.6 meters up a mountain. If he is 70% of the way up, how many meters tall is the mountain?

Answers

Answer:

358

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

Find the given trigonometric ratio in the problem below.

Answers

Answer:

tan c would be 20/21, and that can't be further simplified. tan is opposite/adjacent, so that's why it's 20/21.

I NEED HELP
Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form.


2,7,12,...

Answers

Answer:

Arthmetic, it is a 5 difference

Step-by-step explanation:

Brainliest pls

46 = 3b + 70
What is b?

Answers

Answer:b=8

Step-by-step explanation:

3b=70-46

3b=24

b=24/3

b=8

What is the y-intercept of the graph of the line given by the equation 3y + 4x = 15
A. 5
B. 4
C. 3
D. -4/3

Answers

Answer:

It would be 5

Step-by-step explanation:

which of the following choices is a possible length for DF? 17 39 19

Answers

Answer:

39

Step-by-step explanation:

Help please! I’m taking a math test and I’m stuck

Answers

Answer:

d = 79

Step-by-step explanation:

79 = a = d

please help√√√:-) 1111

Answers

Answer: 1246 for the first and 1400 for the second

Step-by-step explanation:

I’d like some help with this question.
(Multiple choice)

Answers

Answer:

I think D

Step-by-step explanation:

You cant have negative numbers as radius

A saving account earns 4.5 simple interest per year. If 650.00 is deposited and no withdrawals or deposits are made during one year how much interest will be earned after one year

Answers

Answer:

29.25 Interest

Step-by-step explanation:

Take the formula: I=PRT

The principal is 650.00, 4.5 is the rate, 1 year is the time, We do not know the interest.

Change the rate, 4.5 to 0.045 to help solve the problem.

Times 650.00, 0.045, and 1 together.

You will get 29.25, Which is the answer!

Booyah! You are done.

Hope this helps!

An average Smart TV costs $500. On Black Friday, the Smart TV goes on sale for $350. By what percent did the
TV go on sale?

Answers

Answer:

30%

Step-by-step explanation:

$500-$350=150

150/500 x 100

=30%

Alex has 75 buttons. He gives 15 buttons to emma what percent of the button did Alex give to emma? just need help i don't understand what i need to do;-;

Answers

Answer:

So you have a total of 75 You give away 15So 15/75 to find the % So he gave away 20%

What's the maximum amount of money you should spend on a Modern Art painting worth 30k if you had to pay 15% tax?

Answers

Answer:

Tax would be 4500$

Step-by-step explanation:

15/100 = x/30000

Do 15 x 30000 = 450000

then divide 450000 by 100 = 4500

what is the volume of a rectangular prism with a length of 5 cm, a height of 3 cm, and a width of 10 cm?

Answers

Answer:

V=150cm³

Step-by-step explanation:

Formula: w×h×l

V rectangular prism: 10×3×5= 150cm³

A new car is purchased for $42,000 and over time its value depreciates by one half
every 7 years. How long, to the nearest tenth of a year, would it take for the value of
the car to be $5,800?

Answers

Answer:

t=20

Step-by-step explanation:

delta math blessed.

Answer:

t=20

Step-by-step explanation:

I do not have one, I apologise.

Which angle has its terminal side on the negative x axis? Pls answer soon

Answers

Answer:

d-pi radians

Step-by-step explanation:

Answer:

Pi- radiants

Step-by-step explanation:

12 años 3 horas y 5 dias cuantos minutos son. respuestas rapido plis

Answers

The answer is 532,980

Answer:

¡Hay 6311385.2 minutos en 12 años, 5 días y 3 horas!

Step-by-step explanation:

Espero que esto te ayude y que tengas un gran día.

2(10) + 2(x - 4) please help.

Answers

Answer:

MARK ME AS A BRAINLIST AND FOLLOW ME

PLEASE I NEED HELP!!!!Annika finished
of her run in
of an hour.
How long will her whole run take?
Less than 1 hour
More than 1 hour
Exactly 1 hour

Answers

Answer:

More than 1 hour . Cheers.

Step-by-step explanation:

1/4 x 4 = 1

1/2 x 4 = 2

2<1

Judy calls in a to-go order at the local pizzeria. She orders pizza for $1.75
per slice and a soda for $2.50.

Answers

Answer:

i think you want the total. it is $4.15

Step-by-step explanation:


Jeff uses the expression 2(3b + 1) to determine how many books (b) he needs to order for his store. If b = 12, how many books should Jeff order?

Answers

Answer:

73

Step-by-step explanation:

you write 12 instead of b

Answer:

73

Step-by-step explanation:

Hope this helped!

please help meeeeeeee​

Answers

Answer:

y = -1/2x + 1

Step-by-step explanation:

Slope-intercept form:

y = mx + b

Use two of the ordered pairs and find the slope:

m = (1-2)/(0-(-2)) = -1/2

y-intercept is 1 as point (0, 1) is given in the table:

b = 1

The line is:

y = -1/2x + 1
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