Find x

Please help me

Find the scale:

30 miles / 5miles = 6

Multiply km by the scale:

8 km x 6 = 48 km

The answer is 48 km

Answer: 48km

Step-by-step explanations:. It's just simple cross multiplication.

5miles----->8km

30miles---->?km

Answer is ( 30×8)÷5= 48km

Step-by-step explanation:

145×70÷100= $101.50

107.25% of 101.50 = $108.85

Answer:

\(3 \times \frac{1}{3 } + \frac{1}{2} \times - 12( \frac{1}{3} ) = \frac{1}{3} \)

The probability of picking three black cards in a row, without replacement, from a standard deck of 52 playing cards is 2/17, or approximately 0.1176 (rounded to four decimal places).

The probability of picking a black card on the first draw = 26/52 = 1/2

        (since there are 26 black cards in the deck)

The probability of picking a black card on the second draw, given that a one was picked on the first draw and the card is not replaced = 25/51,    

        (since there are now only 25 black cards left out)

The probability of picking a black card on the third draw, given that the ones picked on the first two draws are not replaced = 24/50 = 12/25,

        (since there are now only 24 black cards left out)

To pick three black cards in a row, we need to multiply the probabilities of each individual draw = (1/2) * (25/51) * (12/25) = 6/51

Simplifying this fraction, we get = 6/51 = 2/17

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Answer:

if i did this right i choose B.

Step-by-step explanation:

Answer:

Answer is "Yes". Here is the explanation

Step-by-step explanation:

Yes ,Tammy is correct.

What is factor?

A number that divides another number without leaving a remainder is called a factor. In other words, when multiplying two whole numbers gives us a product, the numbers we are multiplying are factors of the product because they are divisible by the product.There are two methods of finding factors .They are multiplication and division. In addition, divisibility rules can also be used.

Example: Consider the number 8. 8 can be the product of 1 and 8 and 2 and 4. Consequently, the factors of 8 are 1, 2, 4, 8. Therefore, when finding or solving factor problems, only positive numbers are taken into account, whole numbers and non-fractional numbers.

Given,Tammy said that when multiplying by 9 she can insert a 0 after the other factor and then subtract the other factor to get the product.

We are taking one example,

\(9 \times 5 = 45\)

In this case 9 and 5 are factors and 45 is product.

Now based on question,9 is one factor,and another factor in above example is 5.If we insert 0 to another factor,in this case 5 becomes 50.

Now according to question subtract other factor 5.

So it should be (50-5) = 45 which is equal to the above product (9×5)

Therefore Tammy is correct.

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Answer:

Step-by-step explanation:

1. 8 + 7 = 15

2. (4)(9)= 36

3. 3(11) + 8 = 33 + 8 = 41

Answer:

The segment that connects the midpoints of the legs of a trapezoid is called the median of the trapezoid.

Step-by-step explanation:

Answer:

If eight avocados is equal to four dollars, then sixteen (eight times two) is equal to eight dollars. Since you can't add another eight avocados to get twenty, you would add half of eight, which would also be half of the cost of eight. Adding four to sixteen gets you to twenty and adding two dollars to eight gets you to ten dollars.

Step-by-step explanation:

Answer:

x = 2

Step-by-step explanation:

Answer: 2

Step-by-step explanation:

Step-by-step explanation:

You want 45 out 360 degrees  of the entire area of the circle

  ENTIRE area = pi r^2  

       45/ 360   * pi (11)^2 = 121/ 8  pi

Answer:

C. x = 6, y = –3

Step-by-step explanation:

I just took the test and got it right :)

Answer:

C

Step-by-step explanation:

Edge2020

To test the effectiveness and efficiency of the new drug, the drug company will most likely conduct a randomized controlled trial (RCT).

In an RCT, participants are randomly assigned to different groups. In this case, the drug company will randomly select patients from the large group to take the new drug. The purpose of random assignment is to create comparable groups and minimize bias, ensuring that any observed differences between the groups can be attributed to the treatment being tested.

The drug company will likely have two groups in the trial: the experimental group and the control group. The experimental group will receive the new drug being tested, while the control group will receive the approved drug that clears up the infection in five days. This setup allows for a direct comparison between the two drugs.

By randomly assigning patients to either the experimental or control group, the drug company can control for potential confounding variables that may affect the results. This helps ensure that any differences in outcomes between the two groups can be attributed to the specific drug being administered.

During the trial, the drug company will monitor the patients' responses and compare the effectiveness and speed of the new drug to the approved drug. They will collect data on the time it takes for the infection to clear up for each group of patients.

By using a randomized controlled trial, the drug company can gather rigorous scientific evidence on the efficacy of the new drug and determine if it works faster than the approved drug. This type of study design allows for a more reliable evaluation of the new drug's effectiveness, providing valuable information for regulatory authorities, healthcare professionals, and patients.

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To determine if the packaging process is capable or if an adjustment is needed, we can calculate the process capability index (Cpk) using the given information.

The process capability index (Cpk) is calculated as the minimum of two ratios: Cp and Cpk.

Cp (Process Capability):

Cp = (Upper Specification Limit - Lower Specification Limit) / (6 * Standard Deviation)

In this case:

Upper Specification Limit = 264 + 13 grams = 277 grams

Lower Specification Limit = 264 - 13 grams = 251 grams

Standard Deviation = 1.03 grams

Cp = (277 - 251) / (6 * 1.03) ≈ 4.04

Cpk (Process Capability Index):

Cpk = min[(Upper Specification Limit - Process Mean) / (3 * Standard Deviation), (Process Mean - Lower Specification Limit) / (3 * Standard Deviation)]

Process Mean = 43.5 grams

Upper Specification Limit = 277 grams

Lower Specification Limit = 251 grams

Standard Deviation = 1.03 grams

Cpk = min[(277 - 43.5) / (3 * 1.03), (43.5 - 251) / (3 * 1.03)]

= min[233.5 / 3.09, -207.5 / 3.09]

= min[75.58, -67.22]

= -67.22 (since the negative value is smaller)

The process capability index (Cpk) is -67.22, which indicates that the process is not capable of meeting the specifications. An adjustment is needed to bring the process back within the desired range.

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The present value of the loan is found to be  approximately $70.28.

To find the present value of a loan, we can use the formula:

Present Value = Future Value / (1 + (interest rate * time))

Given that the future value is $1,321.17, the interest rate is 7.75%, and the time is 230 days, we can plug in these values into the formula:

Present Value = 1321.17 / (1 + (0.0775 * 230))

Calculating the expression in the parentheses first:

Present Value = 1321.17 / (1 + 17.8075)

Simplifying further:

Present Value = 1321.17 / 18.8075

Evaluating the division:

Present Value ≈ $70.28

Therefore, the present value of the loan is approximately $70.28.

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Answer: 2.666666etc..

Step-by-step explanation:

Answer:

2.64

Step by step explanation

4/9=0.44

0.44×6=2.64

Number that produces a rational number when multiplied  by 1/2 is any integer.

Rational number is a number that can be represented as the quotient p/q of two integers such that q ≠ 0. In addition to all the fractions, the set of rational numbers includes all the integers, each of which can be written as a quotient with the integer as the numerator and 1 as the denominator.

Given number,

1/2, it is already a rational number.

Numbers that produces a rational number when multiplied by 1/2

is any integer.

Hence, any integer is the number that produces rational number when multiplied by 1/2.

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Answer:

Step-by-step explanation:

y = (-x+1)(x-5)

zeroes

(-x+1)(x-5) = 0

-x + 1 = 0

x = 1

(1,0)

x -5 = 0

x = 5

(5,0)

Vertex

y = (-x+1)(x-5)

y = -x²+5x + x - 5

y = -x² + 6x - 5

x coordinate

-6/-2

3

y coordinate

-(3)² + 6(3) - 5

-9 + 18 - 5

- 14 + 18

4

V(3,4)

Answer:

Step-by-step explanation:

The equation is V = √(20L).

Solve this equation for L and the result is L = V2/20

Since V = 57 mph, putting this value into the equation, L = (57)2/20 = 162.45 ft should be his skid marks

The general solutions of the systems whose augmented matrices are given in exercises 7–14.The given matrices are:[ 1 3 4 7 ][ 1 4 0 7 ][,3 9 7 6 ] [ 2 7 0 10 ]First, we need to rewrite the given matrices in an equation form as below:x + 3y + 4z = 7 x + 4y = 7 3x + 9y + 7z = 6 2x + 7y = 10

Exercise 7Let's solve the system using Gaussian elimination.x + 3y + 4z = 7 x + 4y = 7 3x + 9y + 7z = 6 2x + 7y = 10
Step 1: Subtraction of row 1 from row 2 will eliminate x.x + 3y + 4z = 7 - x - 4y = -2 3x + 9y + 7z = 6 2x + 7y = 10
Step 2: Subtraction of 3 times row 1 from row 3 will eliminate x.x + 3y + 4z = 7 - x - 4y = -2 - 9y - 5z = -15 2x + 7y = 10
Step 3: Subtraction of 2 times row 1 from row 4 will eliminate x.x + 3y + 4z = 7 - x - 4y = -2 - 9y - 5z = -15 2x + 7y = 10 - y - 8z = -4
Step 4: Solving the remaining equations, we get:z = 1, y = 1, x = 2
Hence, the general solution of the given system is (2,1,1).

Exercise 8Let's solve the system using Gaussian elimination.x + 4y = 7 2x + 7y = 10
Step 1: Subtraction of 2 times row 1 from row 2 will eliminate x.x + 4y = 7 - 2y = -4
Step 2: Solving the remaining equation, we get:y = 2, x = -1
Hence, the general solution of the given system is (-1,2).

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Answer:

$67

Step-by-step explanation:

$14 multiplied by 4 hours is $56, plus the $21 makes it $67.

There were 425 guests at a hotel. 170 guests ordered food. 40 percentage of the guests ordered food.

A percentage is a fraction of a whole in mathematics, which is denoted by the symbol per 100. A single unit out of a hundred, or one hundredth of something, is represented as a single percent, such as 1%. The Latin phrase per centum, which means by the hundred, is where the word percent originates. Percentage does really refer to a hundredth or 1/100 of something.

Given,

Total number of guests = 425

Guest who ordered food = 170

For percentage,

Value/ Total × 100%

170/425 × 100%

0.4 × 100%

40%

There were 425 guests at a hotel. 170 guests ordered food. 40 percentage of the guests ordered food.

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Answer:

Step-by-step explanation:

you do part a

Equation 1: 4x+y=2

Equation 2: 3x-3y=9

b

Divide equation 2 by 3

x-y=3

add y to both sides

x=3+y

Sbustitute this into equation 1

4(3+y)=2

12+4y+y=2

5y= -10

y= -2

Plug this into equation 1

4x-2=2

x=1

Part c.

Equation 1: 4x+y=2

Equation 2: 3x-3y=9

divide equation 2 by 3

x-y=3

add the two equations

(x-y)+(4x+y)=2+3

5x=5

x=1

Plug this into equation 1

4(1)+y=2

4+y=2

y= -2

For part a just create a table and graph it

Answer:

Step-by-step explanation:

(a)image averaging is a very effective method of reducing noise in images. Image averaging reduces noise by adding multiple images of the same scene together and then dividing by the number of images added.The conditions that must be fulfilled for the image averaging method are as follows:-

(i) The background of the image must not move between each image capture.- The noise present in the image must be random.- The source of the noise must be consistent.

(ii)The mathematical expression that characterizes the noise in the resultant image when K images are averaged, as K becomes large is given by;sigma_n^2/K

Where;sigma_n^2 is the variance of the noise and K is the number of images that have been averaged.

Therefore, as K increases, the variance of the noise in the resultant image reduces, and thus, the noise reduces.When either method can be used for noise reduction, the temporal image averaging method would be the preferred method to select.

(iii)This is because it uses a sequence of images that are taken at different times, usually at high speeds, to produce a single image that is free of noise. This method is best when dealing with fast-moving objects, and it can be used in situations where the camera cannot be stabilized and is experiencing unwanted vibration or shaking.

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Answer:

6

Step-by-step explanation: