4/5 miles in 1/5 hour unit rate

One reason for using a t distribution instead of the standard normal curve to find critical values when calculating a level c confidence interval for a population mean is that (b) z requires that you know the population standard deviation s.

The t distribution is used when the population standard deviation is unknown and is estimated from the sample. The t distribution has fatter tails than the standard normal curve, which makes it more appropriate for smaller sample sizes. When the sample size is large, the t distribution approaches the standard normal curve, and the z distribution can be used instead.

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Answer:

b = 3d/n+m^2

Step-by-step explanation:

Answer:

  -1640

Step-by-step explanation:

You want the sum of the geometric series ...

  1 -3 + ... -2187

We can write out this series with first term 1 and common ratio -3:

  1 -3 +9 -27 +81 -243 +729 -2187

And, we can add it up:

     1 -3 +9 -27 +81 -243 +729 -2187 = -1640

The sum of the series is -1640.

The formula for the general term of the series is ...

  an = a1(r^(n-1))

We can use this to find the number (n) of the last term:

  -2187 = 1((-3)^(n-1))

If we consider the magnitudes of the terms, the value of n is the same:

  2187 = 1(3^(n-1))

  3^7 = 3^(n -1)

  7 = n -1

  8 = n . . . . . . . the same number we get by counting terms in the series

And the formula for the sum is ...

  Sn = a1(r^n -1)/(r -1)

  S8 = 1((-3)^8 -1)/(-3-1) = (6561 -1)/-4 = -1640

The sum of the series is -1640.

__

Additional comment

As we did above, we would ordinarily find the value of n using logarithms. The logs of negative numbers are complex.

In order to get a real ratio of ln(-2187) to ln(-3), we need to adjust the imaginary part of ln(-2187) by multiples of 2π so the result has the same angle as ln(-3). What we find is ...

  (ln(-2187) +6πi)/(ln(-3)) = 7 . . . . a positive integer

Effectively, we can find n by considering only the real parts of the logs, which is basically the same as using term magnitudes.

In a:  Type 1 error = 0.05, In b: A small p-value (typically ≤ 0.05) indicates strong evidence against the null hypothesis, so you reject the null hypothesis.  In C: Type 1 error

a) Type 1 error = 0.05

b) When you perform a hypothesis test in statistics, a p-value helps you determine the significance of your results. ... The p-value is a number between 0 and 1 and interpreted in the following way: A small p-value (typically ≤ 0.05) indicates strong evidence against the null hypothesis, so you reject the null hypothesis.

0.03 < 0.05

c) Type I and type II errors. ... In statistical hypothesis testing, a type I error is the rejection of a true null hypothesis (also known as a "false positive" finding), while a type II error is failing to reject a false null hypothesis (also known as a "false negative" finding). so Type 1 error

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Answer: 9

Step-by-step explanation:

Answer:

48r

Step-by-step explanation:

6(8r)

=6×(8r)

=(48r)

Answer:

48r

Step-by-step explanation:

6x8=48 uvu

Answer:

2 rocks

Step-by-step explanation:

2 crates + 2 rocks = 1 crate + 4 rocks

2 crates + 2 rocks = 2 crates + 8 rocks

Hence, 1 crate = (8-4)÷2

= 2 rocks

Answer:

The number of players the team can bring to the tournament is 16.

Step-by-step explanation:

With the information provided, the equation would express that the total cost to go to the tournament is equal to the price to rent a bus plus the result of multiplying the amount per player for meals for the number of players.

Total cost=896.50+47x, where:

x is the number of players

Now, as you know that the softball team raised $1,648.50 to go to a tournament, you can replace the total cost with this number and solve for x:

1,648.50=896.50+47x

1,648.50-896.50=47x

752=47x

x=752/47

x=16

According to this, the answer is that the number of players the team can bring to the tournament is 16.

Answer:

Equation:  47x + 896.5 = 1648.5

X= 16

Step-by-step explanation:

Delta Math

Answer:

A

Step-by-step explanation:

The answer is circle because if you slice a cone parallel to the base, the cross section is circle

A Right Cone is sliced parallel to its base the resulting shape is Circle.

A cone is a" three dimensional shape consisting one circular shape and once continuous curved surface tapering to a point".

According to the question,

A right cone is slice parallel to its base.

In order to find the resulting shape. When a right cone is sliced parallel to its base it results Circle.

Hence, right Cone is sliced parallel to its base the resulting shape is Circle.

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Answer:

(2h-3k)(m-n)

Step-by-step explanation:

factor by grouping, you can group the first two terms and the last two terms:

2h(m-n) + (-3k)(m-n)

there will be one factor in common, use that factor in combination with the factors that are not duplicated:

(2h-3k)(m-n)

Answer:

\((2h-3k)(m-n)\)

Step-by-step explanation:

So we start with:

\(2mh-2nh-3mk+3nk\)

To make this look more managable, lets seperate this into two binomials. Lets start with:

\(2mh-2nh\)

So how can we factor this? Lets look at what both the values have in common.

We immediatly see that they both have a coefficent of 2.

They also both have a h.

This means we can factor out a 2h from both and get:

\(2h(m-n)\)

Now lets move onto the other binomial we had:

\(-3mk+3nk\)

Again, we can immediatly see that both values in this binomial have a 3.

Be careful however, make sure to factor out a -3, not a 3.

Another thing the two values have in common is a k.

This means we can factor out -3k to get:
\(-3k(m-n)\)

Now lets reintroduce our first factored binomial back into this equation:

\(2h(m-n)-3k(m-n)\)

Notice that both factored binomials have (m-n)

Because of this we can neaten up our equation into:

\((2h-3k)(m-n)\)

How does this work?

Recall that the -3k will distrubute, or in otherwords multiply the (m-n) as \(3k(m-n)\). It works the same way in this form as well, since when you use foil, you multiply 2h by both m and -n, and -3k by m and -n.

And we see, if we multiply the binomials out again, we get:

\((2h-3k)(m-n) = 2mh-2nh-3mk+3nk\)

So our answer is:

\((2h-3k)(m-n)\)

Hope this helps! :3

Answer:

It's 14..... I just took the quiz

By applying the above properties of a kite, the length of line segment BC is equal to: B. 14 units.

According to geometry, the adjacent sides of a kite ABCD are always equal and a pair of opposite angles are always equal. Thus, we can logically deduce the following points:

By applying the above properties of a kite, the length of line segment BC is equal to 14 units because it's equal to the length of line segment AB.

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Answer:

\(=\frac{1}{9^5}\)

Step-by-step explanation:

\(\frac{9^2}{9^7} \\\\\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}=x^{a-b}\\\frac{9^2}{9^7}=9^{2-7}\\\\=9^{-5}\\\mathrm{Apply\:exponent\:rule}:\quad \:a^{-b}=\frac{1}{a^b}\\=\frac{1}{9^5}\)

Answer:

$151.20.

Step-by-step explanation:

35 % = 0.35  so we multiply the wholesale price by 1.35:

112 * 1.35

The marked-up price of the furniture will be $151.20.

The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that the wholesale price for a desk is $112. A certain furniture store marks up the wholesale price by 35%.

The mark-up price will be calculated as,

Mark up = (112 x 0.35) + 112

Mark up = 39.2 + 112

Mark up = $151.20

Therefore, the marked-up price of the furniture will be $151.20.

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Answer:

B. Start at -7 on the number line and move 11 to the right.

Step-by-step explanation:

Given:

We can add or remove only positive numbers on the number line to get it  correct, so we need to open the parenthesis. When evaluated we get:

-7- (-11) = - 7 + 11 = 4

Correct interpretation of of this expression is:

Correct choice is:

Answer:

Ann is 0 miles away from home at the point (0,0) This took place before Ann started to walk.

Step-by-step explanation:

The point (0,0) on a number line, also called the axis, means that Ann is 0 miles away from home. This is because, the point is at the start of the graph, and the only numbers in this point is 0. This means, that when at this point, Ann was 0 miles away from home.

Hope this helps! :D

B: m^4+6n

D: a+c

i did this on khan

Answer:

Step-by-step explanation:

y=m4+6n is the only expression that contains exactly two (2) terms

PREMISES

y=the expression that represents “a sum of exactly two terms” from the among the set (xy, m4+6n, 3+7s+t)

CALCULATIONS

The expression from among the set (xy, m4+6n, 3+7s+t) that represents exactly 2 terms can be denoted by the statement:

y=

m4+6n since the other expressions xy and 3+7s+t contain 1 term and 3 terms respectively.

Hi! I'd be happy to help you with your question. To find the height of the top of the ladder from the ground, we need to use the Pythagorean theorem, which involves the terms "ladder" (hypotenuse), "distance from the house" (base), and "height from the ground" (height).

The Pythagorean theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the ladder, in this case) is equal to the sum of the squares of the other two sides (base and height). So, we have:

ladder^2 = base^2 + height^2

Given that the ladder is 11 ft long and the base (distance from the house) is 7 ft, we can plug these values into the equation:

11^2 = 7^2 + height^2

Now, solve for the height:

121 = 49 + height^2

Subtract 49 from both sides:

72 = height^2

Take the square root of both sides:

height = √72 ≈ 8.5 (rounded to the nearest tenth)

So, the top of the 11-ft ladder is approximately 8.5 ft high from the ground when it leans against the side of the house with its base 7 ft from the house.

Answer:

\(\sf x = 1 + 2\sqrt{3}\)

Explanation:

In a right angle triangle, the hypotenuse is the longest side.

Here the given sides are (x + 1) cm, (x + 2) cm, (x + 4) cm.

where (x + 4) is the longest side among all the side lengths.

Apply Pythagoras theorem:

(leg 1)² + (leg 2)² = (hypotenuse)²

substitute values

\(\sf (x + 1)^2 + (x + 2)^2 = (x + 4)^2\)

\(\sf x^2 + 2x + 1 + x^2 + 4x + 4 = x^2 + 8x + 16\)

\(\sf x^2 + x^2 - x^2 + 2x + 4x - 8x + 1 + 4 - 16 = 0\)

\(\sf x^2 - 2x - 11 = 0\)

use quadratic formula

\(\sf \dfrac{-(-2)\pm \sqrt{(-2)^2 - 4(1)(-11)} }{2(1)}\)

\(\sf \rightarrow \dfrac{2\pm \sqrt{48} }{2}\)

\(\sf \rightarrow 1\pm \sqrt{48}\)

\(\sf \rightarrow 1\pm 2\sqrt{3}\)

\(\sf \rightarrow 1+ 2\sqrt{3} \:\ or \:\ 1 -2\sqrt{3}\)

\(\sf \rightarrow 4.46 \:\ or\:\ -2.46\)

As length can only be positive, the value of x will be 1 + 2√3.

Answer:

The answer should be "Outlier".

The total amount of paint Aubrey used is more than 1/2 liter but less than 1 liter

To estimate the total amount of paint that Aubrey used for both the mural and the wall, we can add the fractions of paint used

So, we have

Total = 4/7 + 2/10

Evaluate the sum in decimals

This gives

Total = 0.77 (approximated)

This value is between 0.5 liters and 1 liter

Hence, the estimate is between 0.5 liters and 1 liter

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Complete question

Aubrey used 4/7 liter of paint for a mural in her room and 2/10 for a wall in her bathroom.

Determine a reasonable estimate for the total amount of paint Aubrey used

Answer: B or the one that is more than 1/2 but it is less than 1

Step-by-step explanation: Took quiz on khan

Answer:

87*0.5 = 43.5

43.5

Step-by-step explanation:

Answer:

62

Step-by-step explanation:

An interaction occurs when (D) the values of one independent variable influence how another independent variable influences a result.

A type of activity known as interaction takes place when two or more items have an impact on one another.

In contrast to a one-way causal effect, the idea of a two-way effect is crucial to the concept of interaction.

Interactivity and interconnection are closely related concepts; the latter deals with the interactions of interactions inside systems; combinations of numerous straightforward interactions might result in unexpected emergent phenomena.

In many sciences, interaction has numerous specialized meanings.

When the values of one independent variable affect how a result is affected by another independent variable, this is known as an interaction.

Therefore, an interaction occurs when (D) the values of one independent variable influence how another independent variable influences a result.

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Complete question:

An interaction occurs when:

a. a single independent variable changes the dependent variable, disregarding all other variables in the study

b. two independent variables both influence the dependent variable

c.the dependent variable does not depend on any of your independent variables

d. the effects of one of your independent variables depend on the level of the other independent variable

Answer:

x = 55

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define

x/5 - 1 = 10

Step 2: Solve for x

Answer: Some natural barriers are the Himalayas isolating the Indian subcontinent from the rest of Asia, the Grand Canyon, the Dead sea, and the Mississippi river.

The mean of the distribution of the mean weight per fish based on the sampling is 1.50 pounds, and the standard deviation is 0.06 pounds.

These formulas can be used to calculate the mean and standard deviation of the sampling distribution of mean fish weight:

Mean of the mean weight per fish sampled across the distribution:

μ = μ = 1.50 pounds (mean weight of a single fish)

The sampling distribution's standard deviation for the mean fish weight is:

σ/√n = 0.3/√40 = 0.06 pounds (where n is the sample size and is the standard deviation of the weight of a single fish.)

So, The mean of the distribution of the mean weight per fish based on the sampling is 1.50 pounds, and the standard deviation is 0.06 pounds.

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