What is the value of x in this proportion?

Answers

Answer 1

Answer:

Answer:

x=6

Solution,

$(4)/(x) = (6)/(9 ) \n or \: 6 * x = 4 * 9(cross \: multiplication) \n or \: 6x = 36 \n or \: x = (36)/(6) \n x = 6$

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Answer 2

Answer:

Answer:

X = 6

Step-by-step explanation:

Cross Multiplication

We can go about this 1 of 2 ways we can either cross multiply or divide across the numerators and denominators. Let's cross multiply. We would 4*9 = 6x. Which would simplify down to 36 = 6x. We would then divide the 6 on each sides of the equation to get 6 = X.

Dividing Across

The other way we can go about it is by seeing what 4 had to be multiplied by to get to 6. We do this by dividing 6 by for which gets us 3/2 or 1.5. Now that we know this we would then divide 9 by 3/2 or 1.5 to get the answer of 6.

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On a scale drawing with a scale of 1/20, the height of the building is 8 inches. How tall is the actual building in feet?

Answers

that means its downgraded to 1/20 of actual height, let actual height is x. Then
(1/20) * x = 8, x = 20 * 8 = 160, actual height = 160 inch
160 inch = 160/12 feet = 13 1/3 feet or 13.333 feet.

Lamar needs to make a total of 40 deliveries this week so far he has completed 36 of them what percentage of the total deliveries has Lamar completed

Answers

90% percentage of the total deliveries has Lamar completed.

What do percentage means?

a relative number representing the hundredth part of any quantity One percent (symbolized 1%) is one hundredth part; consequently, 100 percent denotes the complete amount and 200 percent defines twice the supplied amount.
The most fundamental use of percentages is to compare one number to another, with the second number rebased to 100.
Percentage simply means "per hundred," and the sign for percentage is%. One percent (or 1%) is one hundredth of a total or whole number and is computed by dividing the whole or entire number by 100.

Total deliveries = 40

completed = 36

percentage of the total deliveries has Lamar completed

= 36/40 * 100 = 90%

To learn more about Percentage refer,

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90% because is you take 40 and times it by 0.90 (90% of 40) it = 36

When rounded to the nearest ten, I become 500. What numbers could I be?

Answers

any number from 450 to 499

450,460,470,480,490,500,510,510,520,530,540

70% of what number is 50

Answers

look in the attached file below

Well, 10% of 50 is 5.
so 5 times 7 (for the 70%) is 35.

Alex is conducting a survey for a car company. She decides to start by interviewing some people in her neighborhood. She prepares a questionnaire and emails it to 50 neighbors who own cars. Of those neighbors, 24 respond. Why is this sample likely to be biased?

Answers

1). Her sample is all from the same socio-economic group ... the people
who live in HER neighborhood.

2). Even from those, she only gets any information from about half of them.

Answer:

Given scenario is :

Alex is conducting a survey for a car company. She decides to start by interviewing some people in her neighborhood.

She prepares a questionnaire and emails it to 50 neighbors who own cars. Of those neighbors, 24 respond.

We can see that Alex sent the questionnaire to only her neighbors or people who live near her, so this will be the reason the sample will be biased.

What is the y-intercept of the line described by the equation below? y = -5x + 7

Answers

positive 7 is the y-intercept of the equation

Answer:

(0,7)

Step-by-step explanation:

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