A bag contains 20 marbles, of which 4 are red. What is the probability that a randomly selected marble will be red?
Select ALL that apply
A 115
B 4/20
C 2/10
05/2

Answer:

2112

Step-by-step explanation:

100% sure

Answer:

The answer is 126.

Step-by-step explanation:

If you multiply 2*9 first, you get 18. Then multiply 18 by 7. The answer will be 126. I hope this helps.

Answer:

$97.17

Step-by-step explanation:

First, subtract 85 from 668:

668 - 85

= 583

This means that our budget for all of the days excluding the last day is $583

To find how much can be spent on the remaining days, divide 583 by 6:

583/6

= 97.17

So, approximately $97.17 can be spent on the remaining days

Answer:

AB, AC, AD, BC, BD, CD

Hope this helps :)

Answer:

five line segment =AB,AC,AD,BC,BD,CD

Answer:

[tex]6\sqrt2\\OR\\8.48528137[/tex]

Step-by-step explanation:

The area of a sector of a circle is found by:

[tex]A = \frac{\theta*r^2}{2}[/tex]

The question asks for the radius so the equation above can be repurposed

[tex]r = \sqrt\frac{2A}{\theta}[/tex]

A = 3pi

angle = pi/12

[tex]\frac{6\pi}{\pi/12} = \frac{72\pi}{\pi} = 72[/tex]

[tex]\sqrt{72} = 6\sqrt2 = 8.48528137[/tex]

Answer:

d

Step-by-step explanation:

Answer:

4 gallons/1 day

Step-by-step explanation:

What is a rate? A rate is writing a ratio in fraction form. A ratio is the proportion of two things. (ex: for every 1 dog, there are two cats.)

Creating the ratio: For the ratio, there is no given amount of which one needs  to come first, but because it is about the milk, I put that first. In the problem it says 12 gallons for 3 days so: 12/3

Simplifying: To simplify, think of the largest factor between the two numbers. If you can't immediately, think of one factor in common and keep simplifying. In this case, 4 is the greatest common factor between these. To simplify, divide both sides by four, and that is your answer: 4: 1

Answer:

x² + 4x

Step-by-step explanation:

Area of the rectangle = length × width

length = x + 4

width = x

Therefore,

Area = x(x + 4)

Area = x*x + x*4

x² + 4x

Answer:

2.9

Step-by-step explanation:

Answer:

Step-by-step explanation:

29/30 in decimals = 0.966666666667

29/30 in percentages= 96.67%

Answer:

C.  the standard error of the mean

Step-by-step explanation:

You need the sample mean, sample proportion , and the standard error which depend on z or t, sigma or s, and n

Found on organism, genes determine which protein your cells will make.

A gene is a fundamental unit of heredity that encodes the production of a gene product as a sequence of nucleotides in DNA.

Genes, which may be found on the organism, govern which protein your cells will produce.

Found on organism, genes determine which protein your cells will make.

Hence, organism,and protein are the correct answer.

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Answer:

The null hypothesis is [tex]H_{0}: \mu = 8[/tex], and the alternative hypothesis is [tex]H_{a}: \mu < 8[/tex]

Step-by-step explanation:

At the null hypothesis, we test if the mean is equal to a certain value.

At the alternate hypothesis, we test if the mean is less than, more than, or different of the value tested at the null hypothesis.

Claims to lose an average of 8 pounds the first month

This means that the null hypothesis is [tex]H_{0}: \mu = 8[/tex]

If the FTC finds evidence that the average is less than 8 pounds, the agency will file a lawsuit against the company for false advertising.

FTC tests if the mean is less than 8, so the alternate hypothesis is [tex]H_{a}: \mu < 8[/tex]

Answer:

The point estimate of the proportion of women who trust recommendations made on Pinterest is of 0.78.

Step-by-step explanation:

To find the point estimate of the proportion of women who trust recommendations made on Pinterest, we find the sample proportion.

In this question:

150 women

117 trust recommendations made on Pinterest.

Point estimate:

[tex]p = \frac{117}{150} = 0.78[/tex]

The point estimate of the proportion of women who trust recommendations made on Pinterest is of 0.78.

Answer:

72

Step-by-step explanation

48 + k+l =180

48 +90+l =180

138 +l = 180

l=180 - 138

l = 42

now

l+m+n= 180

42 +m+66 =180

108+m= 180

m= 180 -108 m =72

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Answer:

(-4,5)

Step-by-step explanation:

that is the top left quadrant which means the x value has to be negative but the y value has to be positive

Answer:

217=31m; m=7, 7 miles per day

Step-by-step explanation:

217/31=m 217=31m, just divide the total number of miles by the number of days

Answer:

this equation will have 2 solutions

Answer:

Answer is D.

Step-by-step explanation:

Answer:

42°

Step-by-step explanation:

Since all the angles in the figure add up to 180°...

180 - 54 = 126

3x = 126°

x = 126 ÷ 3 = 42

Answer:

Experimental probability is the result of an experiment. Theoretical probability is what is expected to happen. Three students tossed a coin 50 times individually.

Step-by-step explanation:

Experimental probability is found through experiments while theoretical probability are not.

Probability is simply the possibility of getting an event. Or in other words, we are predicting the chance of getting an event.

Theoretical probability is the probability that we use normally which describes the percent or probability that an event is likely to happen. This is found using logic.

Experimental probability is the probability that we calculate through the actual experiments that describes the frequency of an event happening. This is found using experiments which are repeated.

They can be same, both of which describes the probability of happening an event.

Hence the experimental probability is found through experiments while theoretical probability are not.

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9514 1404 393

Answer:

  a) radius: 6 (m); mass: 22 (kg)

  b) volume: 19 (m³)

  c) d ≈ 2.8×10^3 kg/m³

Step-by-step explanation:

The order of magnitude is the exponent of 10 when the number is written in scientific notation.

a) radius: 1.6×10^6 m, so the order of magnitude is 6 when the units are meters.

  mass: 4.8×10^22 kg, so the order of magnitude is 22 when the units are kg.

__

b) The volume is ...

  V = (4/3)πr^3 ≈ 1.716×10^19 m^3, so the order of magnitude of the volume is 19 when the units are m^3.

__

c) The ratio of mass to volume is ...

  d = (4.8×10^22)/(1.716×10^19) ≈ 2.8×10^(22-19) = 2.8×10^3 kg/m^3, so the order of magnitude is 3 when the units are kg/m^3.

Answer:

the square or the triangle?

Answer:

1) 15.62 cm

2) 29.68 cm

Step-by-step explanation:

1) √(100 + 144) = √244 = 15.62 cm

2) √(256 + 625) = √881 = 29.68 cm

Answer:

3Median = Mode + 2Mean

Step-by-step explanation:

Answer:

The answer is D: only I and II

Step-by-step explanation:

I know for sure this is the correct answer. Hope this helped! Mark me Brainliest!

The true statements are X'Y'Z' becomes the translated image of the triangle XYZ. X'Y'Z' becomes the reflected image of the triangle XYZ.

Two triangles are said to be congruent if the length of the sides is equal, a measure of the angles are equal and they can be superimposed.

When XYZ is transformed on a coordinate plane to obtain its congruent image X'Y'Z.

X'Y'Z' becomes the translated image of the triangle XYZ.

X'Y'Z' becomes the reflected image of the triangle XYZ.

X'Y'Z' doesn't become the rotated image of the triangle XYZ.

Thus, Option I and II are true statements. so D is the correct answer.

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Answer:in what can I help

Step-by-step explanation: