please help

There are 2 answers for this (use a comma to separate them)

Emma got 90% of the questions on her history test correct if she answered 27 questions correctly, how many questions did Emma get wrong?

There were (A) questions on the test so she got (B) questions wrong

Answer:

Hundred thousands place.

Answer:

In this case the number 7 would be located in the hundreds of thousands.

---

Thank you so much for participate in the community of Brainly.com

I hope help you :)

Kind regards, Antonio.

To calculate the standard deviation of discrete random variables when given standard deviation and mean, we can follow the mentioned procedure.

Determine the mean, or expected value, by adding the products of each result and its probability:

μ = n ∑ i = 1

x 1p1 + x2p2 + xnpn = x I p I

Step 2: Using the formula

σ^2=n∑i=1,

calculate the variance for the random variable.

p I ( x I − μ ) 2 .

Step 3: Take the square root of the variance to calculate the standard deviation.

A discrete random variable is one that can have just a finite number of or countably infinitely many different values. However, this does not mean that the sample space can only have a finite number of outcomes.

A random variable is one that can have several values, each of which has a certain probability of occuring. The random variable is discrete when there are a finite (or countable) number of such values.

Random variables are distinct from "regular" variables, which have a fixed (but frequently unknown) value.

To learn more about discrete random variables

brainly.com/question/17238189

#SPJ4

Answer:

1

Step-by-step explanation:

Answer:

The slope of the line is -1/2, and the entire equation should be y = -1/2x + 3/2

Step-by-step explanation:

Choose two points along the line, for this I chose (3,0) and (-1,2). Finding the slope from there should be (y2 - y1)/(x2-x1), or -1/2. To get the entire line use point slope form of y - y1 = slope (x -x1) with one of the points you already found.

Hopefully this helps- let me know if you have any questions!

35 inches on the map will translate to an actual distance of 700 miles (fourth option).

The first step is to determine the scale of the map. In order to determine the scale, divide the actual distance between the two cities by the distance on the map.

Scale = distance between the two cities / distance on the map

Scale = 500 / 25  = 20

Now, multiply the distance on the map by the scale.

Distance in miles = 20 x 35 = 700 miles

To learn more about scale drawings, please check: https://brainly.com/question/26388230

#SPJ1

Answer:

35 inches on the map will translate to an actual distance of 700 miles (fourth option).What is the distance in miles?The first step is to determine the scale of the map. In order to determine the scale, divide the actual distance between the two cities by the distance on the map. Scale = distance between the two cities / distance on the map Scale = 500 / 25  = 20 Now, multiply the distance on the map by the scale. Distance in miles = 20 x 35 = 700 milesTo learn more about scale drawings, please check: brainly.com/question/26388230#SPJ1

Step-by-step explanation:

Answer:

Brand A is the better buy.

Step-by-step explanation:

A:

$4.59/40 = $0.11475

B:

$3.99/30 = $0.133

Brand A:

$0.11 per bag

Brand B:

$0.13 per bag

Brand A is the better buy.

Answer:

Step-by-step explanation:

I used x instead of ()

The initial function is:

● x = 1

The function after the changes is

● (1/2)x + 7

The function was shifted 15 unit to the left

Answer:

x = 10.47

Step-by-step explanation:

circumference = 2 * 10 * π = 20π

centre angle of a circle (in radiant) = 2π

x : 20π = π/3 : 2π

x = (20π * π/3)/ 2π

x = 10 * π/3

x = 10π/3

x = 10.466667

x = 10.47

Although the options related to your question is missing attached below is the transformation matrix

A transformation matrix alters the original coordinate system of a matrix from x, y to  x' , y' ( i.e. the inverse value of x and y )

Given transformation matrix :

\(T = \left[\begin{array}{ccc}1&0\\0&-1\\\end{array}\right]\)

   \(= \left[\begin{array}{ccc}1&0\\0&-1\\\end{array}\right]\left[\begin{array}{ccc}x\\y\\\end{array}\right]\) \(= \left[\begin{array}{ccc}x\\-y\\\end{array}\right]\)

From the diagram in the question

x = -2 , y = 4

hence ; T( -2, 4 ) = ( -2, -4 )  

attached below is the transformation matrix showing the application of t to v

learn more : https://brainly.com/question/22378074

Answer:

A

Step-by-step explanation:

Edg 2021

The given information does not provide any clear indication for determining the position that should be taken on 3/01 and 3/02. Without additional information, it is not possible to make a decision. The table only displays the closing prices of the July GBP Futures Contract on different days, and it is unclear what trading strategy or what scenario is being considered. Additional information about the goals and objectives, the market conditions, and other relevant factors would be necessary to make a decision about trading positions.

Answer:

Below in bold.

Step-by-step explanation:

As we  all know a car has 4 wheels and a motorcycle has 2 so we can write 2 equations:

x + y = 140     where x = number of cars and y = number of cycles.

4x + 2y = 370.............A

Multiply first equation by 2:-

2x + 2y = 280.............B

Subtract equation  B from A:

2x = 90

x = 45.

So there are 45 cars and 140 - 45 = 95 motorcycles.

to find the slope:

\(m = \frac{y2 - y1}{x2 - x1} \\ m = \frac{4 - 1}{1 - 2} \\ m = - 3\)

Answer: y=-5x-2

Step-by-step explanation:

first, you can look at where there is a dot along the y axis, and that will be your number at the end, then you can figure out the slope by going up or down(being your numerator) and left or right(being your denominator), simply and that is your slope

Answer:

RS,RT,ST

Step-by-step explanation:

63+60=123 , 63+57=120 ,60+57=117

Polynomial: 6x^3 + 12x^2 - 18x

Form 1: 6(x^3 + 2x^2 - 3x)

Explanation: This form was created by factoring out the GCF of 6 from each term in the polynomial.

Form 2: 6x(x^2 + 2x - 3)

Explanation: This form was created by factoring out the GCF of 6x from each term in the polynomial.

In both forms, the GCF of 6 allows us to factor out common factors and simplify the polynomial expression while preserving its original meaning.

To create a factorable polynomial with a greatest common factor (GCF) of 6, we can start by considering the common factors of the terms. Let's construct a polynomial:

Polynomial: 6x^3 + 12x^2 - 18x

To rewrite this polynomial in two other equivalent forms, we can factor out the GCF from each term and simplify.

Form 1: 6(x^3 + 2x^2 - 3x)

In this form, we factored out the GCF of 6 from each term: 6x^3/6 = x^3, 12x^2/6 = 2x^2, and -18x/6 = -3x.

Form 2: 6x(x^2 + 2x - 3)

In this form, we factored out the GCF of 6x from each term: 6x^3/6x = x^2, 12x^2/6x = 2x, and -18x/6x = -3.

We created each form by identifying the common factors in the polynomial and factoring them out. This process allows us to rewrite the polynomial in equivalent forms that emphasize different aspects.

In Form 1, we factored out the GCF of 6, leaving the remaining polynomial inside the parentheses. This form highlights the fact that the polynomial can be written as the product of the GCF and the remaining terms.

In Form 2, we factored out the GCF of 6x, again leaving the remaining polynomial inside the parentheses. This form emphasizes the fact that the polynomial can be written as the product of the GCF and another factor, in this case, x.

By rewriting the polynomial in these two forms, we have created equivalent expressions that emphasize the presence of the GCF and demonstrate the polynomial's factorability.

for such more question on Polynomial

https://brainly.com/question/7297047

#SPJ8

Answer:

A

Step-by-step explanation:

Because |x| would be absolute value.

Absolute value is always positive so If you had

|-7| it would equal 7.

The number line in option A is the only one that shows it.

Answer: option A

Step-by-step explanation:

Remember, the number line that is option A has absolute value.

So, it would mean this number line is the answer.

Hope it helps!

Answer:

78 inches

Step-by-step explanation:

5 hours = 390 inches

1 hour = 390 / 5

1 hour = 78 inches

Therefore the snail travels 78 inches in 1 hour.

Hope this helps!

The radius and diameter for the given figure are.

What is diameter?

In pure mathematics, a diameter of a circle is any line phase that passes through the middle of the circle and whose endpoints lie on the circle. It can even be outlined because the longest chord of the circle.

Main body:

A) as radius given = 3yd

so diameter = 2r

diameter = 2*3

                = 6 yd

B) diameter given = 92 in

as d = 2r

92 = 2r

r = 46 in

C) as radius given = 23 ft

so diameter = 2r

diameter = 2*23

               = 46 ft

Hence the values are as follows.]

To know more about diameter click on the link below

https://brainly.com/question/390660

#SPJ1

Answer:

m<D' = 180⁰-104⁰

m<D' = 76⁰

Answer:

The equation of line d is

X = -5x + 4

Explanation:

Two lines are parallel when they both have the same slope.

Line c and line d have a common slope of -5.

X = -5x + 4, in particular, passes through the point (2, -6).

Hope this helped. Have an awesome and blessed year!

The probability of observing no positive reading if all suspects are telling the truth is d. 0.59. Probability theory is a branch of mathematics that is used to model and analyze random events.

Probability can be used to predict the likelihood of different outcomes in a wide range of situations, from games of chance to scientific experiments to everyday events. Probability is a measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1, with 0 indicating that an event is impossible and 1 indicating that an event is certain.

To solve this problem, we need to calculate the probability of observing no positive readings given that all suspects are telling the truth, which is equal to the probability that all 5 suspects receive a negative reading on the lie detector test. Since the lie detector will show a positive reading 10% of the time when a person is telling the truth, the probability that a suspect will receive a negative reading when telling the truth is 1 - 10% = 90%. Therefore, the probability that all 5 suspects will receive a negative reading when telling the truth is:

(90%)^5 = (0.9)^5 = 0.59049.

The correct answer is therefore (d) 0.59.

Learn more about probability, here https://brainly.com/question/30034780

#SPJ4

Answer:

The value of y is 216

(and the value of x is 12)

Step-by-step explanation:

The general formula for a geometric sequence is,

\(a_n = a_1(r)^{n-1}\)

Where n represents the nth term, a_1 is the first term and r is the common ratio,

we see that,

r = 6,

the first term is,

a_1 = (x-6)

the 2nd term is,

a_2 = 3x,

the 3rd term is,

a_3 = y, finding y,

first we find x, using the above given formula we have,

\(a_2 = a_1(6)^{2-1}\\3x = (x-6)(6^1)\\3x = 6x -36\\36 = 6x - 3x\\36 = 3x\\x=36/3\\x=12\)

x = 12,

Now, for y we can use the relation between a_3 and a_2,

\(a_3 = a_1(6)^{3-1}\\y = (x-6)(6)^2\\y = (12-6)(6^2)\\y = 6(6^2)\\y = 6^3\\y = 216\)

y = 216

Answer:

0.6603 = 66.03% probability that it will be sent with the ABC Speedy Delivery Company and arrive on time.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

\(P(B|A) = \frac{P(A \cap B)}{P(A)}\)

In which

P(B|A) is the probability of event B happening, given that A happened.

\(P(A \cap B)\) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Sent by ABC Speedy Delivery Service.

Event B: Arrived on time.

The probability that any given parcel will be sent by the ABC Speedy Delivery Service is 0.71.

This means that \(P(A) = 0.71\)

The probability that the parcel will arrive on time given the ABC Speedy Delivery Company was used is 0.93.

This means that \(P(B|A) = 0.93\)

Find the probability that it will be sent with the ABC Speedy Delivery Company and arrive on time.

This is \(P(A \cap B)\). So

\(P(B|A) = \frac{P(A \cap B)}{P(A)}\)

\(P(A \cap B) = P(B|A)*P(A) = 0.93*0.71 = 0.6603\)

0.6603 = 66.03% probability that it will be sent with the ABC Speedy Delivery Company and arrive on time.

The result is that x = 8 is the smallest positive number such that f(x) surpasses g(x).

An integer is a whole number that may be positive, minus, or zero and is not a percentage. Integer examples include: -5, 1, 5, 8, 97, as well as 3,043. The following figures are examples of non-integer numbers: -1.43, 1 3/4, 3.14,.09, and 5,643.1.

To find the smallest positive integer x for which f(x) exceeds g(x)

we need to set the two functions equal to each other and solve for x:

f(x) = g(x)

-x² + 5x = -10x + 10

Simplifying the equation, we get:

x² + 15x - 10 = 0

Using the quadratic formula, we can solve for x:

x = (-15 ± sqrt(15² - 4(1)(-10))) / (2(1))

x = (-15 ± sqrt(265)) / 2

The two possible solutions are approximately -0.372 and -14.628. Since we are looking for the smallest positive integer solution, we take the ceiling of the positive solution to get x = 8.

To know more about Integer visit:

https://brainly.com/question/929808

#SPJ1

Answer:

Step-by-step explanation:

According to the picture we have:

Consider right triangles OXQ and OYS.

Their hypotenuse are the radius:

Use Pythagorean theorem:

Since OQ = OS, their squares are also equal:

Answer: 5/7 of the kids chose New York or L.A.

Step-by-step explanation:

All you need to do in this problem is add the fraction of people that chose New York and the fraction of people that chose L.A:

4/7 + 1/7 = 5/7

Answer:

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

As per given drawing PQ is the segment bisector of XY.

The point W is the midpoint of XY. As per property of midpoint, XW and WY have equal length.

XW = 13 units, hence:

Given:

Aim:

We need to find the line which is parallel to y=-3x+6.

Explanation:

We know that the slope of the parallel lines is equal.

The given line is of the form

The slope of the required line is -3.

The slope-intercept form of the line equation for the required line is

substitute m=-3, x=1, and y=-5 in the equation to find the value of b.

Substitute m=-3 and b= -2 in the slope intercept line equation.

Final answer:

Teh slope-intercept equation is