The probability that a certain science teacher trips over the cords in her classroom during any independent period of the day is 0.35. On average, how many periods do students need to wait until this science teacher trips over the cords in her classroom?

0.2275

0.35

2.86

3.5

Not enough information to answer this question

Answer: 493/16

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator

GCD of 493 and 16 is 1

Divide both the numerator and denominator by the GCD

493 ÷ 1

16 ÷ 1

Reduced fraction:

493

16

Therefore, 493/16 simplified to lowest terms is 493/16. or 30.8125

2(c - 3) = 10

Let's evaluate the equation for c = 8

2(8 - 3) = 10

2(5) = 10

10 = 10

Which is true. Therefore c = 8 is a solution for the equation.

Answer:

B

Step-by-step explanation:

Answer:

x=-2 or x=14

Step-by-step explanation:

since it's absolute value, this actually has two equations:

x-6=8

and

x-6=-8

we solve x-6=8 by adding 6 to both sides which equals x=14

we solve x-6=-8 by also adding 6 to both sides which equals x= -8+6= -2

I hope this helps! and please mark brainliest!

If you were to close your eyes and pick a ball then the probability of picking a green ball is 3 / 14.

To find the probability of picking a green ball, the formula is :

= Number of green balls / Number of total balls

The number of green balls would be 3 balls.

The number of total balls is 14 balls.

The probability of picking a green ball is therefore :

= 3 / 14

This is the simplest form.

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Answer:

D. -10

Step-by-step explanation:

The sum of a triangle = 180°, therefore,

64° + 63° + x + 63 = 180°

Add like terms

x + 190° = 180°

Subtract 190 from each side

x + 190 - 190 = 180 - 190

x = -10

The equivalent expression to 2/3 - 1/4x + 1/2x - 1/6 is given as follows:

1/2 + 1/4x.

Like terms are terms that share these two features:

If two terms are like terms, then they can be either added or subtracted, that is, we can use them to simplify an expression.

The expression for this problem is defined as follows:

2/3 - 1/4x + 1/2x - 1/6.

The like terms are simplified as follows:

Hence the simplified expression is given as follows:

1/2 + 1/4x.

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Answer:  length of AB

Step-by-step explanation:

\(\overline{AB}\) represents the line segment from point A to point B

\(\overrightarrow{AB}\) represents ray from point A to infinity through point B

AB represents the length of the line segment from point A to point B.

Answer:

5

Step-by-step explanation:

1/2÷1/10=

1/2x10/1=

10/2=5

Answer:

the answer is 5

Step-by-step explanation:

keep change flip

1/2 x 10 =5

The capacity of this swimming pool is between B. 500 gallons to 1,000 gallons.

Capacity refers to the product of the length, width, and height of a three-dimensional object or space.

The capacity of an object means the same as its volume.

Olympic-size swimming pools have the following standard dimensions:

Length = 50 m

Width = 25 m

Height = 2 m

Capacity of an Olympic swimming pool = 2,500 m³ (50 x 25 x 2)

= 660,000 gallons (2,500 x 1,000 ÷ 3.785)

An interval estimate shows the lower and upper limits.

6 x 105 gallons = 630 gallons

Thus, the capacity of the swimming pool is Option B.

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A. 100 gallons to 500 gallons

B. 500 gallons to 1,000 gallons

C. 1,000 gallons to 1,500 gallons

D. 1,500 gallons to 2,000 gallons

Answer:

B

Step-by-step explanation:

9.50 divided by 2 equals 4.75, so 1 unit would equal 4.75 (sorry if that was a bad explanation

Answer:

B) 2 burritos for $9.50

C) 10 sandwiches for $47.50

D) 3 hats for $14.35

Step-by-step explanation:

B) 9.50/2=4.75

C) 47.50/10=4.75

D) 14.35/3=4.75

The vector addition of vector a = < 4, - 3 > and b = < - 1, - 2 > is given by,

a + b = < 3, -5 >

The graph of the vector sum is given below.

The addition of vectors suggests the addition of the corresponding components of the involving vectors.

Given the vectors are:

a = < 4, - 3 >

b = < - 1, - 2 >

So doing vector addition we get,

a + b = < 4, - 3 > + < - 1, - 2 > = < (4 + (-1)), (-3+(-2)) > = < (4 - 1), (-3 -2) > = < 3, -5>

Head to tail method is a method to draw vector addition, where the initial point of a vector involved in vector addition is started from tail point of another vector involved in vector addition.

Using vector tool we draw the vector addition of given vectors 'a' and 'b' we get,

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Answer: Look at the image below

Step-by-step explanation: I took the test.

Step 1: Select Vector

Step 2: Click on (0, 0), then click on (4, -3); (for every point your going to have to click on where you start then where you want to go.)

Step 3: Click on (4, -3), then (3, -5). Why?: ((4 - 1), (-3 - 2)) = (3, -5)

Step 4: To complete the problem and thus completing the "head to tail" method, you need to click on the origin (0,0) and finally click on (3, -5)

Your answer should now look like mine, now go get that A.

18 is the correct answer

Solution

Then it means that 200 Americans is a sample

A sample is just a part of a population

4580 or 4600 is the best answer I have gotten for this question

Answer:

This is odd since the answer is 9 units. The best option would most likely be D since that is the closet answer. Unless it tells you to round i would go with D.

Step-by-step explanation:

we know that

the dimensions of the first garden are------> 5 ft x 3 ft

perimeter first garden=2*[5+3]-----> 16 ft

the dimensions of the second garden are---> (5*2) ft x (3*2) ft

10 ft x 6 ft

perimeter second garden=2*[10+6]-----> 32 ft

so

The answer is

32

Answer:    570OC^2mFG

Step-by-step explanation: I did this in school! Trust Me! You can report if wrong!

The equation of the line tangent to y = x^3 + 3x^2 + 2 at its point of inflection is y = -3x - 1.

To find the point of inflection, we need to take the second derivative of the function and set it to zero:

f(x) = x^3 + 3x^2 + 2

f'(x) = 3x^2 + 6x

f''(x) = 6x + 6

Setting f''(x) = 0, we get:

6x + 6 = 0

x = -1

So the point of inflection is (-1, f(-1)),

f(-1) = (-1)^3 + 3(-1)^2 + 2 = 2

So the point of inflection is (-1, 2).

To find the equation of the tangent line at this point, we need to find the slope of the tangent. The slope of the tangent is the first derivative evaluated at the point of inflection:

f'(x) = 3x^2 + 6x

f'(-1) = 3(-1)^2 + 6(-1) = -3

So the slope of the tangent line is -3.

Now we use the point-slope form of the equation of a line, with the point (-1, 2) and the slope -3:

y - 2 = -3(x + 1)

Simplifying, we get:

y = -3x - 1

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This is a problem of proportions , were we know what a relationship between two quantities is, and want to find the relationship that is equivalent to it.

So we start saying that $24.80 is to 5 kilos, the same as some unknown price (let's call it "x") is to 8 kilos.

In math terms this is written as:

24.80 : 5 the same as (=) x : 8

which can also be written using fractions:

Notice that in the above expression, we can solve for the unknown "x" (that means isolate x on one side of the equal sign) by multiplying both sides of the equation by the factor "8" thus cancelling the denominator on the right and leaving x on its own on that side of the equal sign:

So we see that the price we are looking for is $39.68 (for the 8 kilos of the cheese)

Answers:

=============================================

Explanation:

Part (1) Finding the mean

Add up the values to get

80 + 90 + 10 + 75 + 90 + 95 + 99 = 539

Then divide by 7 because there are 7 values in this list

539/7 = 77

The mean is 77

--------------------------

Part (2) Finding the median

First we'll need to sort the values from smallest to largest

{80, 90, 10, 75, 90, 95, 99}

will sort to

{10, 75, 80, 90, 90, 95, 99}

The middle most value is 90 since we have three items below it {10,75,80} and three items above it {90, 95, 99}.

The median is 90

--------------------------

Part (3) Which is the better measure of center?

Nearly all of the values are clustered from 75 to 99. The value 10 is an outlier since it's far from the main cluster. There are more technical processes used to find out if 10 is actually an outlier or not, but we won't deal with that right now.

The much smaller outlier pulls on the mean to make it smaller than what it should be. The mean 77 is too small to represent what the center should be. The median is not affected by outliers, which is why it's used in applications such as home prices.

The median 90 is the better measure of center.

Answer:

I tried c and i got it wrong

Step-by-step explanation:

its not c

Answer:

2/3125

Step-by-step explanation:

Answer:

32/3125

Step-by-step explanation:

  (2/5)^5 = (2^5) / (5^5)

               = 32 /3125         means 2·2·2·2·2 = 32;   5·5·5·5·5= 3125

There are 120 different shirts you can make from different combinations of sleeves, colors, and sizes.

To find the number of different shirts that can be made, use the fundamental counting principle wherein we multiply the number of options for each characteristic:

Long sleeves or short sleeves: 2 options

Three different colors: 3 options

Five different designs: 5 options

Four different sizes: 4 options

2 x 3 x 5 x 4 = 120

Therefore, the total number of different shirts that can be made is 120.

This calculation assumes that all of the characteristics are independent and can be combined in any way, which means that each shirt can have a unique combination of long/short sleeves, color, design, and size.

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Answer:

\(600, 900, 1350\)

Step-by-step explanation:

Given

\(a = 400\) -- initial subscribers

\(b = 1.5\) -- growth factor

Required

Determine the number of subscribers in the next three months

To do this, we make use of:

\(y = ab^x\)

In this case:

x is the number of months

y is the number of subscribers

So:

when x = 1;

\(y = ab^x\)

\(y = 400 * 1.5^1\)

\(y = 400 * 1.5\)

\(y = 600\)

when x = 2

\(y = 400 * 1.5^2\)

\(y = 400 * 2.25\)

\(y = 900\)

when x= 3

\(y = 400 * 1.5^3\)

\(y = 400 * 3.375\)

\(y = 1350\)

So, the next three number of subscribers is:

\(600, 900, 1350\)