There are 20 blue marbles and 10 red marbles in a bag .if a marble is drawn at random once ,what is the probability that it will be blue

Answers

Answer 1

Answer:

2/3

Step-by-step explanation:

First, you figure out how many marbles are in total, which is the denominator. The total number of marbles is 30.

Then, you figure out how many marbles are blue, which is the numerator. There are 20 blue marbles.

Finally, you simplify the fraction. 20/30=2/3.

Answer 2

Answer:

75% i think

Step-by-step explanation:


Related Questions

The test scores for 15 students are 72, 74, 74, 79, 82, 82, 82, 82, 86, 86, 86, 87, 87, 89, and 92. Find the mean of the data. Round your answer to two decimal places.

Answers

76.53 i’m pretty sure.

Answer:

82.67

Step-by-step explanation:

1240 divided by 15 = 82.66667

Plz if u would mark me as brainlest!

Which values of a a,b, and c correctly complete the division?

1/4 divided by 5/6 = 1/a x b/c

Answers

Answer:

a=4, b=6 c=5

Step-by-step explanation:

a linear function forms a line. true or false​

Answers

A linear function does indeed form a line.

Should be pretty easy to answer, I just need a refresher. I forgot how to solve for triangles...

Answers

Well, I hope that kinda helps

Answer:

25.734

Step of explanation:

tanjent =opposite/adjacent

cosine =adjacent /hypotenuse

sine =opposite /hypotenuse

this use tangent because the opposite number is there and we want to find adjacent

so t =opposite /adjacent

tan25 °=12/ a

a=12/tan25

=25.734

Please answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!

Answers

Answer:

11,60,62

Hope this helps

what isn’t your the first time in the year you have a baby shower

Alessandro and Francesca raced each other home from school. It took Francesca 13/15 as long as Alessandro to run home. Who got home first?

Answers

Answer:

Francesca got home first.

Step-by-step explanation:

Answer:

Francesca

Step-by-step explanation:


Solve the equation for x and  find the restrictions on the variable. Ax + bx = c​

Answers

Answer:

x = c/(A + b)

A + b ≠ 0

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Algebra I

Factoring

Step-by-step explanation:

Step 1: Define

Ax + bx = c

Step 1: Solve for x

Factor:                    x(A + b) = cIsolate x:                 x = c/(A + b)

We know that we cannot divide by 0, so A + b cannot equal 0.

(x + y)3 - (x - y)3 when x = 2 and y=-1​

Answers

Step-by-step explanation:

When x = 2 and y = -1,

(x + y)³ - (x - y)³

= (2 - 1)³ - [2 - (-1)]³

= (1)³ - (3)³

= 1 - 27

= -26.

Solve for r
96=84-12r

Answers

Answer:

-1

Step-by-step explanation:

96=84-12r

96-84=-12r

12=-12r

-1=x

x=-1

R=-1
Step by step explanation:

Neglecting air resistance, the distance s(t) in feet traveled by a freely falling object is given by the function s(t) = 16+, where t is time in seconds. The height of a certain tower is 1092 feet. How long would it
take an object to fall to the ground from the top of the building?
seconds
(Round to two decimal places as needed.)

Answers

Answer:

I don't really know it but good luck!

Use Pascal's triangle to find the coefficient of the third term in the expansion of (a + b)2.
Question 10 options:

A)

3

B)

1

C)

4

D)

2

Answers

Answer:

B

Step-by-step explanation:

(a+b)^2

using Pascal triangle

1 1

1 2 1

1 3 3 1

so the third term in the expansion of (a+b)^2

we use

1 2 1

a^2 + 2ab+b

hence the coefficient of third term is 1

option B is collect

What is
[tex] 6 \frac{1}{3} \div \frac{1}{6} [/tex]
equal to?


options:

A. 6

B. 9

C. 12

D. 19

E. 38​

Answers

Answer:

The answer is E, 38.

Step-by-step explanation:

6×1/3 can be written as 19/3.

Use the reciprocal of 1/6, which is 6, and multiply 19/3 and 6.

6 and 3 can be simplified with 2.

So: 19 × 2, which is 38.

Step-by-step explanation:

please it my steps to work on paper whorksheet

7/4 rounded to the nearest hundredth.

Answers

Answer: 7.40

Step-by-step explanation:

since there is no number after 7 you gotta go backwards, so you have to turn it into a decimal

PLEASE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Step-by-step explanation:

The sum of all angles in a triangle is always 180.

So we can set up an equation

3/2x+1/2x+x= 180

3/2+1/2x+2/2x=180

3x+1x+2x=360

6x=360

x=60

A pitcher holds 3 liters of lemonade. If the contents of the pitcher are equally divided among 8 people, how much lemonade will each person receive?

Answers

Answer:

0.375 litres

Step-by-step explanation:

Given that:

Total amount of lemonade held by pitcher = 3 litres

Number of people in which lemonade is to be given equally = 8

Amount of Lemonade received by each person will be:

Total amount of lemonade / number of persons

3 litres / 8

= 0.375 litres

Each person receives 0.375 litres of lemonade

12 is 20% of what number?​

Answers

Answer:

60

Step-by-step explanation:

ASAP plsss help quick

Answers

Answer:

1

Step-by-step explanation:

1 baby now so gummie kiss

how are angles of an equilateral triangle related?

Answers

All are 60 degrees because of equal lengths and equal angles
Since 180 ° in triangle means 180/3 =60

Hope this helps!

Answer:

If the triangle is equilateral, then the triangle is also equiangular.

Step-by-step explanation:

To meet peak energy demand, an electric power cooperative buys back electricity generated locally. They pay #0.07 per solar-powered kWh (kilowatt-hour). How much money does a school make when it sells back 956 kWh to the cooperative?

Answers

Answer: #66.92

Step-by-step explanation:

Since the cooperative pays pay #0.07 per solar-powered kWh (kilowatt-hour), the amount that the school would make when it sells back 956 kWh to the cooperative would be calculated as:

= #0.07 × 956 kWh

= #66.92

Find the sale price of the item. Round to two decimal places if necessary. Original price: $238.13 Markdown: 70% The sale price is $

pls help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! due very soon!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

$71.44

Step-by-step explanation:

Analyze the weather map in 2 to 3 complete sentences. Describe what the weather will be in Olympia, Washington, where a black arrow is pointing.
Please use these Key terms to explain why: weather front and pressure system.

Answers

Answer:

rainy

Step-by-step explanation:

because of the rain cloud is problye going to rain.

"18 less than the quotient of a number and -5 is at most -2"

Answers

Answer:

so......... what's the question?

Step-by-step explanation:

plz answer!!! only if correct.

Answers

Answer:

90°

Step-by-step explanation:

Sum of angles in triangle equals to 180°

∠R = 180° - (∠S + ∠T)∠R = 180° - (29° + 61°) = 180° - 90° = 90°

Radius algebra question!

Answers

Answer:

1 inch

Step-by-step explanation:

[tex]r = \bigg(\frac{3V}{ \pi \: h} \bigg)^{ \frac{1}{2} } \\ \\ plug \: V = 5 \: and \: h \: = 4 \\ \\ r = \bigg(\frac{3 \times 5}{ 3.14 \times 4} \bigg)^{ \frac{1}{2} } \\ \\r = \bigg(\frac{15}{12.56} \bigg)^{ \frac{1}{2} } \\ \\r = \bigg(\frac{1500}{1256} \bigg)^{ \frac{1}{2} } \\ \\r = \bigg(1.19426752 \bigg)^{ \frac{1}{2} } \\ \\r = 1.09282547 \\ \\ r \approx 1 \: in[/tex]

I inch I think but I could be wrong

I NEED THIS PLEASE EXPERS.

Answers

Answer: The answer is 24 :)

Give brainlest if I’m right

Answer:

The answer I think it will be 24 but not sure.

Step-by-step explanation:

Find the range of the data set represented by this box plot.
80 ,90 ,95 ,100 ,105 ,120 125 ,130 ,135 ,140 ,145 ,150 ,155,160
A. 80
B. 76
C. 40
D. 56
Answer fast plz!!

Answers

Answer: OK SooooOOooOOOoooo The answer is: Either 80, 76, 40, or 56

Step-by-step explanation:

Mr. Kelly has 50 coins, all of which are either nickels or dimes. They have a
value of $3.85. Set up a system of equations to find out how many of each coin
Mr. Kelly has.

Answers

So i think its $4.35.

Step-by-step explanation:

I did addition to find out this answer my calculations seem to be correct.

$3.85 + 50 cents = 4 dollars and 35 cents

2 of 6
Evaluate
(-32)°

Answers

Answer:

Step-by-step explanation:

Any number to the power of 0 (zero) is 1, so the answer is 1

If you have 5000 per 125 mcg and need 7140 how many mcg do you need?

Answers

Answer:

178.5mcg

Step-by-step explanation:

If you need 5000 per 125mcg, we can express it as;

5000 = 125mcg

To get the amount of mcg needed for 7140, we will say;

7140 = x mcg

Divide both expression

5000/7140 = 125/x

Cross multiply

5000x x= 7140 * 125

5000x = 892,500

x = 892,500/5000

x = 178.5

Hence the amount og mcg needed is 178.5mcg

Write the equation of a line parallel to y=2x+2 that passes through the point (-1, -7)

Answers

Answer: y=2x-5

Step-by-step explanation:

To find the line that is parallel to y=2x+2, we know the slope must be 2. Parallel lines NEVER touch. That tells us that the slope must be 2. Now, all we have to do is to plug in the point to find the y-intercept.

-7=2(-1)+b            [multiply]

-7=-2+b                [add both sides by 2]

b=-5

With the y-intercept, we can find the parallel line.

y=2x-5

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