Question #16: Suppose you have a bag containing 30 marbles. If the
probability of drawing a black marble is 50%, how many black marbles are
in the bag? *
15
2
20
18

Answers

Answer 1
15 marbles will be in the bag
Answer 2

Answer:

15

Step-by-step explanation:

50% is half, so what is half of 30?


Related Questions

select the true statement about right triangles​

Answers

Answer:

The hypotenuse is always directly opposite the right angle.

Step-by-step explanation:

Answer:

a. is the correct answer

What is the percent of increase from 4,000 to 10,000?

Answers

Answer:

150%

Step-by-step explanation:

Percent change =   [tex]\frac{New - Old}{|Old|}[/tex] × 100%

=> [tex]\frac{10000-4000}{4000}[/tex] × 100

=> [tex]\frac{6000}{4000}[/tex] × 100 = 150% (increase)

What do A and B equal?

PLEASE ANSWER I WILL GIVE A BRAINLIEST

Answers

Answer:

a=2

b=2

Step-by-step explanation:

This is a special 45-degree right triangle. Two angles equal 45 degrees, and then there is a right triangle. In these triangles, the hypotenuse is equal to [tex]k*\sqrt{2}[/tex] where k is equal to the legs (a and b). So, to find the legs divide [tex]k*\sqrt{2}[/tex] by [tex]\sqrt{2}[/tex]. This equals 2, and since a and b are congruent both a and b equal 2.

What the distance between 1,4 and 6,-3

Answers

Answer:

[tex]\sqrt{74}[/tex] or 8.60232

Step-by-step explanation:

Use the distance formula to determine the distance between the two points.

[tex]d = \sqrt{(x_{2} -x_{1})^{2} + (y_{2} - x_{1})^{2} }[/tex]

d = distance

[tex](x_{1}, y_{1})[/tex] = coordinates of the first point

[tex](x_{2}, y_{2})[/tex] = coordinates of the second point

pls help me


Find the surface area of the object. ​

Answers

Answer:

3x3x2=18

3x3x2=18

3x3x2=18

1x3x9=27

18+18+18+28=81            81 cm

Step-by-step explanation:

please help with a math problem must show work.

Answers

Correct answer: (B) C/2r=pi

find the slope for (3,-6)(-1,4)
show the steps

Answers

Answer:

y= -5/2x + 3/2

Step-by-step explanation:

(3,-6). y=mx+b or -6=-5/2 × 3+b, or solving for b: b=-6-(-5/2)(3). b=3/2.

(-1,4). y=mx+b or 4=-5/2 × -1+b, or solving for b: b=4-(-5/2)(-1). b=3/2.

Plugging in the two points, hence y= -5/2x + 3/2

Giving brainliest awnser if you help me with this

Answers

The first option and the last option :)

what does standard devitation mean?

Answers

Answer:

a quantity calculated to indicate the extent of deviation for a group as a whole.

Step-by-step explanation:

t1ts

True or False
Stock Prices are easy to predict?

Answers

oml, this is false. truely false!!

hope this helps ya! :)

A sock drawer contains winter socks and summer socks. Both varieties come in two colors: white and black. There is a pair of each combination. If a sock is selected randomly, what is the probability it will be a black sock or a summer sock? A. 0.25 B. 0.5 C. 0.625 D. 0.75

Answers

Answer:

D 0.75

Step-by-step explanation:

There are a total of 4 pairs: White-Summer, Black-Summer, White-Winter, and Black-Winter. There are a total of 8 socks.

The probability of pulling a black sock or a summer sock is the number of all black or summer socks divided by the total number of socks.

The number of black or summer socks includes 1 pair of White-Summer, 1 pair of Black-Summer, and 1 pair of Black-Winter.

This makes for 6 black or summer socks.

Divide 6 by 8 to get 0.75

What is x? : 41 82 164

Answers

Answer:

x = 41°

Step-by-step explanation:

Angle ABC is an inscribed angle because it has a vertex on the circle. Therefore, we can say that angle ABC is equal to half the arc it intercepts, which is AC. Since AC is equal to 82°, angle ABC would be half of that, or 41°.

Will give brainlist!!!!!!

What would be the best method to use in order to solve the following quadratic equation?
X^2 - 3x = 10

Answers

Answer:

Use the x method

Step-by-step explanation:

Move the 10 over to the other side and get x^2 - 3x -10 = 0 and solve by finding two numbers that add up to negative 3 but multiply to -10 which would be -5 and 2 so the binomials are (x-5)(x+2)

Answer:

x^2 - 3x = 10

Step-by-step explanation:

Move all terms to the left side.

Use the sum product pattern.

Factor (x-5)(x+2) = 0

Create two separate equations,

x - 5 = 0, and x + 2 = 0

Rearrange and isolate the variable.

x = 5

x = -2

Explain how you could find the area of the figure below?? Hellppp

Answers

Answer:

How you would find area of any shape is you would multiply length x width x height.

Step-by-step explanation:

Find the product of 6* V12
O 36/2
O 65
0 5/6
04/18

Answers

Answer:

6√2

Step-by-step explanation:

√6 x √12 = √72

= 6√2

OR

6 x √12 = √72

= 8.485281374238570

Answer:

b

Step-by-step explanation:


If you repeat this experiment 50 times, about how many times do you expect you will turn to an even numbered page?

Answers

Answer:

25

Step-by-step explanation:

for sho for sho

Select all the values of x from this list that make the inequality


FOR POINTS!

Answers

The answer would be A D E

which transformation will change figure a to figure b

Answers

It’s the first one.............

Answer:

I believe it would be the first choice. Rotate 180 degrees about the origin, dilate by a scale factor of 2/3

Step-by-step explanation:

12345678910112131415161718192021212223242526272829303132333435363738394041424344454647484950

Answers

Answer: what what! Confused

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

The students of a school fill 5 buses for a field trip. Each class fills bus. How many classes are riding on the buses?​

Answers

Answer:

The answer is 5

Step-by-step explanation:

Because each bus is assigned 1 class and there is only five buses so there are 5 classes

If there are 5 busses and each class fills a bus there should be about 5 classes

the volume in a tank varies periodically. At t=0 is at its maximum of 520 gallomns and at t=6 it is at its miximum of 170 gallons. A function in the form y=Acos(Bx)+C can be used to model this situation.Based on the information given determine the values of A,B and C

Answers

Answer:

A = 175, B = π/6, C = 345

Step-by-step explanation:

The given variation of the volume in the tank and time includes are;

At t = 0 the volume in the tank, y = Maximum volume, [tex]y_{max}[/tex] = 520 gallons

At t = 6 the volume in the tank, y = Minimum volume, [tex]y_{min}[/tex] = 170 gallons

The function that models the situation is y = A·cos(B·x) + C

Given that the function that models the situation is the cosine function, we have;

A = The amplitude = (The maximum - The minimum)/2

∴ A = (520 - 170)/2 = 175

A = 175

The period = The time to change from maximum to minimum = 2 × The time to change from maximum (t = 0) to minimum (t = 6)

∴ The period = 2 × (6 - 0) = 12

The period = 12 seconds = 2·π/B

∴ B = 2·π/12 = π/6

B = π/6

C = The vertical shift = Th minimum + A = (The maximum + The minimum)/2

∴ C = (520 + 170)/2 = 345

C = 345

Can someone please tell me what 20% of 100. Thank you soooo much.

Answers

Answer:

20.

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

20% of 100 = 20

Thenks and make me brainliest :))

Ramundus spends 3/7 of his salary on games and 4/9 of his salary on expenses for a car. Does Ramundus spend more of his salary on games or on expenses for a car?

Answers

Hello!
We need to find a denominator that both fractions can be. /63 works perfectly because 7x9 = 63. 3 x 9 = 27, and 4 x 7 = 28. Since 28/63 is bigger than 27/63, ramundus puts more money into car expenses.

Philip has already run 21 miles on his own, and he expects to run 1 mile during each track
practice. How many track practices would it take for Philip to run 41 miles?

Answers

Answer:20

Step-by-step explanation:

21 has already been ran,so subtract that from 41. If he runs 1 mile per track,20 more practices. (41-21)

Point P is located at (6, -4), while point Q is located at (6, 4). How are the two points related?


HELP ME PLZZZZZZZZ!!!!!

Answers

Answer:

They have the same x value.

Step-by-step explanation:

Make the expression below a perfect square by adding in a constant value: x^2+14x+_

Answers

[x^2 + 14x + (1/2•14)^2] - (1/2•14)^2

= [x^2 + 14x + (7)^2] - (7)^2

= (x+7)^2 - 49

If you need an explanation as to how, you can go ahead and ask

Solve for X
1,000,000,000 = 30,683x +4,7872
(one billion)

Answers

Answer:

32589.77701

Step-by-step explanation:

1000000000=30683x+47872

x=1000000000-47872/30683

Therefore,x=32589.77701

How would the numbers -10, 0, and 10 appear on a horizontal number line?

Answers

Answer:

-10  -9   -8  -7  -6  -5  -4  -3  -2  -1  0  1  2   3  4  5  6  7 8 9 10

Step-by-step explanation:

Factor the GCF: 30a3b4 + 20a2b2 - 15ab3. Please help

Answers

Answer:

The GCF for the variable part is ab².

GCFVariable=ab²

Multiply the GCF of the numerical part 5 and the GCF of the variable part ab².

5ab²

Step-by-step explanation:

Find x in the image above. (I circled x)

Answers

Answer:

x = 3.96

Step-by-step explanation:

The ratio for the big triangle is 5:6, so is likely the ratio for the smaller one.

3.3 x 6/5 = 3.96

6 / 3.96 =  1.51515151515

5 / 3.3 =  1.51515151515

Triangles are congruent.

Answer:

3.96 ft.

Step-by-step explanation:

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