If you drew a marble from a bag containing 40 marbles and you had a probability of drawing a red marble, how many red marbles are in the bag?

6
10
3
5

Answers

Answer 1

Answer:

There are 5 red Marbles

Step-by-step explanation:

Alright so since the probability of drawing a red marble is

P(Red) = #Outcomes of Red/#Outcomes in Sample space

The sample Space is 40 marbles.

The probability of drawing red was said to be [tex]\frac{1}{8}[/tex]

P(Red) = [tex]\frac{1}{8}[/tex]

[tex]P(Red) = \frac{r}{40}\\ \frac{1}{8} = \frac{r}{40}\\ \frac{40}{8} = r\\ 5 = r[/tex]


Related Questions

What is the median of this data set?
{13, 13, 13, 15, 15, 16, 16, 17, 17}

Answers

{13, 13, 13, 15, 15, 16, 16, 17, 17}

the median is 15

Answer:

it is 15.

Step-by-step explanation:

the median is the middle number in the data set. in this case, 15 is in the middle.

find GCF of 40 and 120​

Answers

Answer:

Hi there!

Find the GCF of 40 and 120

The GCF of 40 and 120 is 40

40 ÷ 40 = 1

120 ÷ 40 = 3

Hope its help!

Two red and two blue blocks are
placed into a bag. You randomly
take one block out of the bag. If
you replace the block each time,
how many red blocks would
you expect to take out if you try
8 times?

Answers

Answer:

1/3

Step-by-step explanation:

Probability of an Event =  Number of Favorable Outcomes/Total Number of Possible Outcomes

As a waitress, Willow earns an average of 18% tips on all food sales. Last week she worked five days and sold an average of $381.00 in food each day. How much did Willow earn in tips last week? (4 points)
$68.58
$104.27
$342.90
$396.91

Answers

The Amount in tip was first computed which is $68.58 per day, in five days, Willow will earn $342.90 in tips

Percentage of Numbers

Given Data

Tip = 18%Amount earned each day = $381.00

Let us find the amount of tip earned per day

Amount in tip = 18/100*381.00

Amount in tip = 0.18*381.00

Amount in tip = 68.58

Hence, for five days, her tip will be

= 68.58*5

= $342.90

Learn more about percentage here:

https://brainly.com/question/24304697

PLEASE HELP ME |x-5|+|x+5| if x>5

Answers

Answer:

If you don't understand handwriting

then comment ok

40 Points !!!!

Find the slope of line e.


a. -1/2

b. 1/2

c. -2

d. 2

Answers

maybe d i actually don’t know i’m just copying the first person who said that

Refer to Figure 8-9. The loss of producer surplus as a result of the tax is a. $3,000. b. $6,000. c. $9,000. d. $12,000.

Answers

The loss in producer surplus as a result of the tax given the information in the diagram is  $9000.

What is the loss in the producer surplus?

Producer surplus is the difference between the price of a good and the least price the seller is willing to sell the product

The dead weight loss of tax can be determined by calculating the reduction in total surplus as a result of the tax

Loss = (1/2 x 600 x 40) - (1/2 x 300 x 20)

12000  - 3000 = $9000

Please find attached the complete question. To learn more about surplus, please check: https://brainly.com/question/25816093

Solve by completing the square

Answers

Answer:

X¹=-11; X²=3

x ^ 2 + 8x - 33 = o

x ^ 2 + 11x - 3x - 33 = 0

x(x + 11) - 3(x + 11) = 0

(x + 11)(x - 3) = 0

Pls help!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

step 1,×+8=_2

step2,×=_2_8

step3,×=_10

Help picture below problem 13

Answers

The Pythagorean theorem is the idea that the sum of the two legs which are both squared is equal to the hypotenuse's length squared.

     *look at the image I attached for a better explanation

By looking at the picture, we are missing the leg's length, and by using the Pythagorean theorem, we get the equation

    [tex]?^2+5^2 = 13^2\\?^2 + 25 = 169\\?^2 = 144\\? = 12[/tex]

Thus the missing side length is 12 cm

Hope that helps!

I will mark you brain list and Give you 90 point if you do it right and answer right thanks

Answers

Answer:

11 Students

Step-by-step explanation:

It is hard to explain in my opinion but I can try. For the stem column you, basically factor out the first digit of the number. Then the leaf column you, put the second digit of each number in your data set.

Answer:

Step-by-step explanation:

In the equation, y=4x-1, what does the 4 mean? What does the -1 mean?

Answers

4 is the slope and -1 is the y-intercept

Answer:

The equation is written in slope-intercept (y = mx + b) form. Therefore, the '4' represents the slope of the line, and the '-1' represents the y-intercept.

Answer the Both (a) and (b) . And show the method too. I will make Brainelist + 50 points​

Answers

#a

4p-6pq+9q-64p-3(2pq+3q-2)

#b

That be x and y

So

x+y=15--(1)2x+4y=64--(2)

So

from eq(1)

x=15-y--(3)

Put in second one

2(15-y)+4y=6430-2y+4y=642y=34y=17

Put in third one

x=15-17x=-2

Take it positive

x=2

Answer:

(a) (i)  Factorize [tex]\sf 4p-6pq+9q-6[/tex]

Rewrite by swapping the order of the first two terms:

⇒ -6pq + 4p + 9q - 6

Factorize the first two terms and the last two terms separately:

⇒ -2p(3q - 2) + 3(3q - 2)

Factor out the common term (3q - 2):

(3q - 2)(-2p + 3)

(ii)

Square of the binomial: [tex](a+b)^2=a^2+2ab+b^2[/tex]

Rewrite [tex]9.9[/tex] as [tex]10 - 0.1[/tex]

Therefore, [tex]a = 10[/tex] and [tex]b = -0.1[/tex]

Also, remember that multiplying a number by 0.1 is the same as dividing it by 10.  (when dividing a decimal number by 10, simply move the decimal point 1 place to the left).

[tex]\begin{aligned}\implies 9.9^2 & =(10-0.1)^2\\ & =10^2-2 \cdot 10 \cdot 0.1+0.1^2\\& = 100-\dfrac{2 \cdot 10}{10}+\dfrac{0.1}{10}\\& =100-2+0.01\\ & =98 + 0.01\\ & = 98.01\end{aligned}[/tex]

(b) (i)

Let x = number of motor bicycles

Let y = number of cars

Given:

There are 15 vehicles of two types

⇒ x + y = 15

Given:

The number of tires in all vehicles is 64
- Motor bicycles have 2 tires each
- Cars have 4 tires each

⇒ 2x + 4y = 64

(ii)  Rewrite   x + y = 15  to make x the subject:

⇒ x = 15 - y

Substitute into 2x + 4y = 64  and solve for y:

⇒ 2(15 - y) + 4y = 64

⇒ 30 - 2y + 4y = 64

⇒ 30 + 2y = 64

⇒ 2y = 34

⇒ y = 17 cars

Substitute found value of y into  x = 15 - y  to find x:

⇒ x = 15 - 17 = -2 motorbikes

**There must be an error in the question, as with the given information, the number of motorbikes is -2, which is impossible.**

Here are the possible combinations of number of motorbikes (M) and number of cars (C) whose sum of tires is 64.  As you can see, there is no combination that sums to 15 vehicles:

0 M +  16 C = 16 vehicles

2 M +  15 C = 17 vehicles

4 M +  14 C = 18 vehicles

6 M +  13 C = 19 vehicles

8 M +  12 C = 20 vehicles

10 M +  11 C = 21 vehicles

12 M +  10 C = 22 vehicles

14 M +  9 C = 23 vehicles

16 M +  8 C = 24 vehicles

18 M +  7 C = 25 vehicles

20 M +  6 C = 26 vehicles

22 M +  5 C = 27 vehicles

24 M +  4 C = 28 vehicles

26 M +  3 C = 29 vehicles

28 M +  2 C = 30 vehicles

30 M +  1 C = 31 vehicles

32 M +  0 C = 32 vehicles

Please need help on this one

Answers

Answer:

○ [tex]\displaystyle -\frac{3}{4}\:houses\:per\:day[/tex]

Step-by-step explanation:

[tex]\displaystyle \frac{-y_1 + y_2}{-x_1 + x_2} = m \\ \\ \frac{-8 + 2}{-2 + 10} = m \hookrightarrow \frac{-6}{8} = m \\ \\ \boxed{-\frac{3}{4} = m}[/tex]

I am joyous to assist you at any time.

NEED HELP!
What is the zero of the function?
f (x) = x2+x-42/x2+3x-28
Enter your answer in the box.

Answers

[tex]f(x)=\cfrac{x^2+x-42}{x^2+3x-28}\implies \stackrel{f(x)}{0}=\cfrac{x^2+x-42}{x^2+3x-28}\implies 0 = x^2+x-42 \\\\\\ 0=(x+7)(x-6)\implies x= \begin{cases} 6\\ -7 \end{cases}[/tex]

x


6.3630657
,

1.38899554
,
4.75206125

For a moving object, the force acting on the object varles directly with the object's acceleration. When a force of 45 N acts on a certain object, the acceleration
of the object is 5 m/s?. If the force is changed to 63 N, what will be the acceleration of the object?

Answers

Answer:

acceleration,A = 7

Step-by-step explanation:

F = kA

First expression: 45 = 5k, k = 9

therefore, when F = 63, A = 63/9 = 7

J F F 570 K po 142° G H Find the value of x.​

Answers

Answer:

I'm stuck on the same question

Step-by-step explanation:

Which rule(s) represents a linear​ function?

Answers

Answer:

f(x) = ax + b, where a and b are real numbers.

The sum of three numbers is 11 . The sum of twice the first​ number, 5 times the second​ number, and 6 times the third number is 44. The difference between 4 times the first number and the second number is 10. Find the three numbers.

Answers

Answer:

4, 6, 1

Step-by-step explanation:

We can solve this problem using a system of equations:

1) a + b + c = 11

2) 2a + 5b + 6c = 44

3) 4a - b = 10

First, we can substitute the value of b from equation #3 into equation #1:

b = 4a - 10

a + (4a - 10) + c = 11

5a - 10 + c = 11

5a + c = 21

c = 21 - 5a

Now, we can plug the values of b and c into equation #2, as b and c are represented in terms of a:

2a + 5(4a - 10) + 6(21 - 5a) = 44

2a + 20a - 50 + 126 - 30a = 44

-8a + 76 = 44

-8a = -32

a = 4

b = 4a - 10 = 4(4) - 10 = 6

c = 21 - 5a = 21 - 5(4) = 1

Twenty years ago, Mike was four times as old as John. Four years from now mike will be twice as old as John let x represent Mike's age and y represent Johns age. Helppp! I need an equation in either standard or slope-intercept form! WILL GIVE BRAINLIEST!

Answers

Answer:

Mike is 68 and John is 32

Step-by-step explanation:

Set equations as follows

20 years ago

Mike was four times as old as John:

x - 20 = 4(y - 20)

Four years from now

Mike will be twice as old as John:

x + 4 = 2(y + 4)

Simplify each equation

x - 20 = 4y - 80 ⇒ x = 4y - 60x + 4 = 2y + 8    ⇒ x = 2y + 4

Solve for y by substitution

4y - 60 = 2y + 44y - 2y = 60 + 42y = 64y = 32

Find the value of x

x = 2*32 + 4 ⇒ x = 68

I hope you can convert the above equations into required format. Let me know if not.

Find the missing vertical angles.​

Answers

Answer:

L1 = 113°

L4 = 67°

Step-by-step explanation:

L1 + L2 = 180°

L1 = 180° - L2

L1 = 180° - 67°

L1 = 113°

L3 + L4 = 180°

L4 = 180° - L3

L4 = 180° - 113°

L4 = 67°

Proof-

Combination of L1,L2,L3 and L4 should be 360°

113°+67°+113°+67° = 360°

Help me plssssssssssss

Answers

Answer:

DC=12, AD=5, DB=13, 90 degrees

Step-by-step explanation:

Hope this helps!!!

Let me know if you want an explanation!

Simplify and write the trigonometric expression without any fractions: tan(u)+cot(u)

Answers

Answer:

[tex]\csc(u).sec(u)[/tex]

Step-by-step explanation:

[tex] \tan(u)+ \cot(u) \\ \\ = \frac{ \sin(u)}{ \cos(u)} + \frac{ \cos(u)}{ \sin(u)} \\ \\ = \frac{ { \sin}^{2} (u) + {\cos}^{2} (u)}{ \sin(u). \cos(u)} \\ \\ = \frac{1}{ \sin(u). \cos(u)} \\ ( \because \: { \sin}^{2} ( \theta) + {\cos}^{2} ( \theta) = 1) \\ \\ = \frac{1}{\sin(u)} \times \frac{1}{\cos(u)} \\ \\ = \csc(u).sec(u) \\ \\ \implies \: \purple{ \bold{ \tan(u)+ \cot(u) = \csc(u).sec(u)}}[/tex]

There are three commonly used trigonometric identities.

Sin x = 1/ cosec x

Cos x = 1/ sec x

Tan x = 1/ cot x or sin x / cos x

Cot x = cos x / sin x

(Sin²u + Cos²u) = 1

The final expression of the trigonometric expression tan(u) + cot(u) is

Cosec(u) x Sec(u)

What are trigonometric identities?

There are three commonly used trigonometric identities.

Sin x = 1/ cosec x

Cos x = 1/ sec x

Tan x = 1/ cot x or sin x / cos x

Cot x = cos x / sin x

We have,

Tan (u) + Cot (u)

We know that,

Tan x = sin x / cos x

Cot x = cos x / sin x

Now,

Tan (u) + Cot (u)

= {Sin (u) / Cos (u) + Cos (u)}/ Sin (u)

Simplify by forming into a fraction.

= (Sin²u + Cos²u) / Sin(u)Cos(u)

[ sin² + cos² = 1 ]

So,

(Sin²u + Cos²u) = 1

= 1 / Sin(u)Cos(u)

= 1/Sin(u) x 1/Cos(u)

= Cosec(u) x Sec(u)

Thus,

The final expression of the trigonometric expression tan(u) + cot(u) is

Cosec(u) x Sec(u)

Learn more about trigonometric identities here:

https://brainly.com/question/14746686

#SPJ2

What's the answer to this
z + 2 = 50​

Answers

[tex]z + 2 = 50[/tex]

[tex]z = 50 - 2[/tex]

[tex]z = 48[/tex]

Answer:

z = 48

Step-by-step explanation:

z + 2 = 50 ( subtract 2 from both sides )

z = 48

Find the perimeter please help

Answers

Answer:

30

Step-by-step explanation:

When solving the perimeter you add up all the numbers on the outside of the shape

Find the x- and y-intercepts of the quadratic function below. Give non-integer
coordinates in fractional form.
f(x) = 2x2 - 5x + 3
-

Answers

Answer:

Step-by-step explanation:

Whats 0.3(x-5)=7.2 as a numerical

Answers

Answer:

x=29

Step-by-step explanation:

0.3(x-5)=7.2

multiply by 10

3(x-5)=72

divide by 3

[tex]x-5=\frac{72}{3} \\x-5=24\\x=24+5\\x=29[/tex]

19, add the distributive property, then subtraction property and then division property of equality

∠45° is complementary to which of the following angles?
∠45°

∠135°

∠315°

∠55°
The answers people keep on giving is 90 but it doesnt say it here. Can someone help me?

Answers

Answer:

45°

Step-by-step explanation:

complementary angles add up to 90° so it's 90-45

Find the perimeter and area of the following figure.
10 ft
5 ft
8 ft
3 ft

Answers

Answer:

33ft

Step-by-step explanation:

1. Work out the missing length.

2.10-3=7 so it is 7.

10+5+8+3+7=33ft

The fuel tank of chris new lawn mower holds 1/2 gallon of gasoline chris poured 0.4 gallons into the tank did chris fill the tank explain?

Answers

Sry I can’t explain it but it should be 0.9 I checked with a Scientific calculator
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