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

what is the value?? its due in 5 minutes

Answers

Answer:

-52

Step-by-step explanation:

Substitute -4 in for x and use PEMDAS to get the answer.

Answer:

C) 44

Step-by-step explanation:

3(-4)^2 - 7(-4) - 32

= 48 + 28 - 32

= 44

mark me brainliest pls!!!

A circle has a radius of 2.5 cm. What is the diameter of this circle in cm? Record your answer in Blank 1. What is the circumference of this circle? Record your answer in Blank 2 (\large \pi is almost 3.14)______________?

Answers

Answer:

The diameter is 5 cm and the circumference is diameter x pi

Step-by-step explanation:

How do I find the area of a circle of 5 inches

Answers

Answer:

Area =πr2  

Step-by-step explanation:

Hope this Helps

Evaluate this expression.

112.212 − (− 3.25)



Question 1 options:

−115.62


−108,962


109.352


115.462

Answers

Answer:

-115.62

Step-by-step explanation:

bhjka,f

If a certain cannon is fired from a height of 9.8 meters above the​ ground, at a certain​ angle, the height of the cannonball above the​ ground, h, in​ meters, at​ time, t, in​ seconds, is found by the function h(t) = -4.9t² + 30.5t +9.8. Find the time it takes for the cannonball to strike the ground.

Answers

Answer:

6.53 s

Step-by-step explanation:

The height of the cannon ball is represented by a quadratic function as:

h(t) = -4.9t² + 30.5t +9.8.

At 0 s (i.e. t = 0), h(0) = -4.9(0²) + 30.5(0) + 9.8 = 9.8

That means that the cannon ball is initially at a height of 9.8 m above the ground. To calculate the time it takes the ball to touch the ground, we use:

h(t) = -4.9t² + 30.5t +9.8

It touches the ground when h(t) = 0. Hence:

0 = -4.9t² + 30.5t + 9.8

Solving the above quadratic equation gives:

t = 6.53 s and t = -0.31 s

Since the time cannot be negative, hence t = 6.53 s. Therefore it takes the ball 6.53 s to hit the ground.

What way of warming up is preferred after exercise?
A. Static
B. Dynamic
C. Calestitic
D. Isometric

Answers

Answer:

Static

Step-by-step explanation:

By process of elimination, static is the only one that would work.

Answer:

static.

Step-by-step explanation:

[tex]\\ \leq \int\limits^a_b {x} \, dx x^{2} \sqrt{x} \sqrt[n]{x} \leq \geq \neq \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right.[/tex]

find the measure of the angle indicated in bold
PLS HELP

Answers

The correct answer is 88 degrees!!!!!!

please help due asap
Thanks in advance

Answers

Answer:

83 I think

Step-by-step explanation:

If x=4 and y=7, evaluate the following
20 - ( 3 y - 4 x )

Answers

Answer:

15

Step-by-step explanation:

3y=21

4x=16

21-16=5

20-5=15

Identify the irrational sum(s). Select all that apply. (more than 1 answer

A) √9+ √7
B) 10+ π
C) √16+1/2
D) 2.25+6

Answers

Answer:

A, B

Step-by-step explanation:

An irrational number is a number that cannot be expressed as a fraction for any integers and. Irrational numbers have decimal expansions that neither terminate nor become periodic.

A (bc sqrt7 doesn't terminate)

B (bc pi doesn't terminate)

the others are rational

7
There are 9 pencils in Bryce's pencil box. 3/4 of the pencils are mechanical pencils.
How many of his pencils are mechanical?

HELP

Answers

6.75 ghubvyubbbgyyvhguhb

Answer:   27 mec. pencils

Step-by-step explanation:

Find the unit rate.
84 miles in 12 days
Unit rate:

Answers

Answer:7

Step-by-step explanation:Divide 84 by 12 and it gives you 7.

Hope it helps :)

Therefore, the unit rate of [tex]\frac{84}{12}[/tex] is [tex]7[/tex].

What is the simplification?

Simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

As per the given information

[tex]\frac{84}{12}=7[/tex]

Hence, the unit rate of [tex]\frac{84}{12}[/tex] is [tex]7[/tex].

To know more about the simplification

https://brainly.com/question/12795317

#SPJ2

Please help me!! I'll give Brainliest!! Fairly simple Geometry question!

Answers

the answer is A !!! hope this helped :)))

Answer:

Option A

Step-by-step explanation:

Let's look at the options

A. Equal side lengths and equal diagonal lengths.

Correct

B. Impossible without angle measure.

Incorrect. Option A gives us solution.

C. Equal side lengths and diagonals bisect each other.

Incorrect. This could be a rhombus.

D. Equal side lengths and diagonals.

Incorrect. Diagonals will have a  greater length.

Help me plzzzzzzz!!!!! ASAP!!!!!!!

Answers

Answer:

3/4

Step-by-step explanation:

12/16 = 3/4

A randomly generated password contains four characters. Each of the four characters is either a lowercase letter or a digit from 0–9. Each character in the password cannot be used more than once.

What is the approximate probability that exactly one of the four characters will be a number?

1%
11%
28%
44%

Answers

28 is the right answer sorry if I’m wrong

The approximate probability that exactly one of the four characters will be a number is 44% option fourth is correct.

What is probability?

It is defined as the ratio of the number of favorable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.

We have:

A randomly generated password contains four characters. Each of the four characters is either a lowercase letter or a digit from 0–9.

Total letters = 26

Total numbers = 10

Total = 10 + 26 = 36

Total possibilities = 36×35×34×33 = 1413720

Password with one number = C(10, 1) = 10

With three letters = C(26, 3) = = 2600

Outcomes = 2600×10 = 26000

Favorable outcomes = 26000×4! = 624000

Probability = 624000/1413720 = 0.44 = 44%

Thus, the approximate probability that exactly one of the four characters will be a number is 44% option fourth is correct.

Learn more about the probability here:

brainly.com/question/11234923

#SPJ5

3. Ramona drank 1 5/8 liters of water during soccer practice. She drank 1 1/4
liters of water on the ride home. Which expression could be used to
determine the amount of water, in liters, Ramona drank altogether?

Answers

Answer:

The expression x = [tex]\frac{13}{8}+\frac{5}{4}[/tex] could be used to determine the amount of water drank altogether.

Step-by-step explanation:

Given that:

Amount of water drank during practice = [tex]1\frac{5}{8} = \frac{13}{8}[/tex]  liters

Amount of water drank on the ride home = [tex]1\frac{1}{4} = \frac{5}{4}[/tex] liters

Let,

x be the total amount of water drank by Ramona.

x = Water drank during practice + Water drank on the ride home

x = [tex]\frac{13}{8}+\frac{5}{4}[/tex]

Hence,

The expression x = [tex]\frac{13}{8}+\frac{5}{4}[/tex] could be used to determine the amount of water drank altogether.

Over the summer Marty reads 4 times as many pages as the number of pages Nelson and Jennifer read combined Marty reads 1,860 pages and Nelson reads 240 pages

Answers

She reads 4 timws as many pages as them together so you add the number of pages they eead them mhltiply it by 4 (1860+240)4=8400

△XYZ is translated up 3 units to form the image ∆X′Y′Z′.

What are the coordinates of the vertices of ∆X′Y′Z′ ?

Enter your answer by filling in the boxes.

Answers

Answer:

The coordinates of the vertices of ∆X′Y′Z′:

X'(-4, 9)Y'(1, 9)Z'(1, 4)

Step-by-step explanation:

Given the triangle △XYZ with the vertices

X(-4, 6)Y(1, 6)Z(1, 1)

It is stated that △XYZ is translated up 3 units to form the image ∆X′Y′Z′.

Translating 3 units UP means we have to add 3 units to all the y-coordinates of the coordinates of the vertices X, Y, and Z to generate the image ∆X′Y′Z′.

Thus,

THE RULE OF TRANSLATING 3 UNITS UP:

P(x, y) → P'(x, y+3)

Therefore, the coordinates of the vertices of ∆X′Y′Z′ will be:

X(-4, 6) → X'(-4, 6+3) → X'(-4, 9)

Y(1, 6) → Y'(1, 6+3) → Y'(1, 9)

Z(1, 1) → Z'(1, 1+3) → Z'(1, 4)

Thus, the coordinates of the vertices of ∆X′Y′Z′:

X'(-4, 9)Y'(1, 9)Z'(1, 4)

the side pieces of a dog house are 10 1/4 inches long.How many pieces can be cut from a board measuring 61 1/2

Answers

Answer:

Step-by-step explanation:

all of them

Can someone help me please!

Answers

Answer:

It would be -5

Step-by-step explanation:

what is 5% as a decimal and a fraction?
what is 10.5% as a decimal and fraction?
what is 135% as a decimal and fraction?​

Answers

Answer:

5% = 0.05

10.5%= 0.105

135%= 1. 35

|2n|-4=8 solve for n

Answers

Answer:

n = ± 6

Step-by-step explanation:

absolute value equations usually produce 2 solutions

to get the positive solution just solve normally:  2n - 4 = 8

                                                                               2n = 12

                                                                                n = 6

to get the negative solution you must take what is in the absolute value bars and multiply by negative one:  -(2n) - 4 = 8

                                                   -2n - 4 = 8

                                                    -2n = 12

                                                      n = -6

what is the inequality of 2.2m < 11​

Answers

Answer:

m<5

Step-by-step explanation:

Answer:

m < 5

Step-by-step explanation:


Graph the line with the equation y = 22 - 2.
y
10
9
8
7
6
5
4
3
2
-10 -9
-8
-7 -6
-5
-4
-3
-2
-
1
2
3
4
5 6
7
8
9 10
-1

Answers

Ok I uploaded a picture of the graph I hope it helps :)
The slope is 0 and the y-int is (0,20)

Stacia has 28 red and blue marbles. The ratio of red to blue marbles is 1:6. How many blue marbles does Stacia have?

Answers

Answer:

The total number of blue marbles = 24

Step-by-step explanation:

Total number marbles Stacia has = 28

The ratio of red to blue marbles = 1 : 6

Let 'r' be the number of red marbles.Let 'b' be the number of blue lines

As the total number of marbles is 28. Thus,

r + b = 28

As the ratio of red to blue marbles is 1 to 6.

It means for each red marble 'r', we have 6 blue 'b' marbles. Thus,

b = 6r

now substituting b = 6r in the equation r + b = 28

r + b = 28

r + 6r = 28

7r = 28

divide both sides by 7

7r/7 = 28/7

r = 4

Thus,

The total number of red marbles ⇒ r = 4

The total number of blue marbles ⇒ b = 6r = 6(4) = 24

Therefore,

The total number of blue marbles = 24

Find the product of 2 and 3 and then take that from 8


Answers

Answer:

2

Step-by-step explanation:

2*3=6

8-6=2

2×3=6 8-6=2

Step-by-step explanation:

im was a great place

Write an equation for the line that passes through the points (0, -2) and (-4, 0).

y = - x - 4
y = -2 x - 4
y = -2 x - 2
y = - x - 2

Answers

Answer:

y=-1/2x-2

Step-by-step explanation:

I dont think any of those options are the right one so thats the correct answer

Answer:    y = -1/2x - 2

Step-by-step explanation:

To first write the equation, we need to find the slope and the y intercept and write it in the form  y=mx +b

To find the slope, we will find the difference between the y coordinates and divide it by the difference between the x coordinates.

The y coordinates of the points are , 0 and -2

The x coordinates of the points are -4 and 0

0 - (-2) = 2

-4 -0 = -4

Slope:  2/-4 = -1/2

Now using the formula y=mx+b, you will input the slope and use one of the given point's coordinates to solve for b the y intercept.

We will use the point (0,-2)

  -2 = -1/2(0) + b

-2 = b

  This means the equation will be  y = -1/2x - 2

Fill in the blanks to complete the equation that describes the diagram.

Answers

Based on the picture I would say:
-4 + -2 = -6

what is the square root of 3 multiplied by 1/2 in the simplest radical form?

Answers

Answer:

usbqjqnamallqnbajabqjqnqkqlqlqllqqlqoqoqnajajhchhsgavbsujwhwjwjqqbq.

hshsjwhwjwjuwubwbwwuwhquuwqjqjqkqbqv pangit mo potang ina mo bulok wlang silbe wag kana mag ajabajajajqkqjbqiqiq

Use the formula to calculate the present value of each payment, assuming an interest rate of 3%. The first several payments have been done for you. Fill in the present value amounts in the table for years 6, 7, 8, and 9.
(Note: Ignore taxes on winnings in this activity.)

PV = FV (1 + r)-t


Future Value Present Value
(0 years) $100,000 $100,000
1 year $100,000 $97,087
2 years $100,000 $94,260
3 years $100,000 $91,514
4 years $100,000 $88,849
5 years $100,000 $86,261
6 years $100,000
7 years $100,000
8 years $100,000
9 years $100,000

Answers

6 years $100,000 $83,748

7 years $100,000 $81,309

8 years $100,000 $78,941

9 years $100,000 $76,642

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