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3 years ago

What is the algebra phrase x time y equal

Mathematics

1 answer:

Alexxandr [17]3 years ago

4 0

Answer

x times y = xy

x + y times a + b = (x + y)(a + b)

For that you can use the FOIL method which is First, Outside, Inside, Last.

First: x times a = ax

Outside: x times b = bx

Inside: y times a = ay

Last: y times b = by

So you have ax + bx + ay +by.

If you end up using numbers, then you can simplify.

Ask your teacher or parents. It's easier to explain in person.

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Out of 3000 students in a School of Public Health, 1500 students defined themselves regular dietary supplement users. If you tak

attashe74 [19]

Answer:

The standard error of the proportion is 0.112.

Step-by-step explanation:

The standard error of a proportion is given by the following formula:

$S = \sqrt{\frac{p(1-p)}{n}}$

In which p is the probability of a success and n is the length of the sample.

In this problem

A success is a student defining themselves regular dietary supplement users. Our of 3000 students, 1500 do. So $p = \frac{1500}{3000} = 0.5$ .

We take a sample of 20 of them, so $n = 20$ .

$S = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.5*0.5}{20}} = 0.112$

8 0

3 years ago

How to solve -66.17738=6.618(4.3x+1.1)-7.1(x-6.8) have not done algebra in 30 years and cannot help my son with this problem

fenix001 [56]

Let's solve your equation step-by-step.

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

Step 1: Simplify both sides of the equation.

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

−66.17738=(6.618)(4.3x)+(6.618)(1.1)+(−7.1)(x)+(−7.1)(−6.8)(Distribute)

−66.17738=28.4574x+7.2798+−7.1x+48.28

−66.17738=(28.4574x+−7.1x)+(7.2798+48.28)(Combine Like Terms)

−66.17738=21.3574x+55.5598

Step 2: Flip the equation.

21.3574x+55.5598=−66.17738

Step 3: Subtract 55.5598 from both sides.

21.3574x+55.5598−55.5598=−66.17738−55.5598

21.3574x=−121.73718

Step 4: Divide both sides by 21.3574.

21.3574x

21.3574

−121.73718

21.3574

x=−5.7

4 0

3 years ago

Read 2 more answers

It takes Owen 18 minutes to walk to school. It takes him the same amount of time to walk back home. He will walk to and from sch

d1i1m1o1n [39]

i think its 756. (18×2=36, 36×21= 756)

4 0

3 years ago

Read 2 more answers

The following section is a statement from the rental agreement Tim signed when he rented his car this past weekend. “Upon checko

Gnom [1K]

Answer:

C. The representative failed to have Tim initial by the fuel level on the Check-Out sheet.

Step-by-step explanation:

After reading the paragraph, we can eliminate B, by seeing that the representative did give him a copy of the Check-Out sheet, as quoted. "Since Tim didn’t have any questions, the clerk handed him the keys and a copy of the Check-Out sheet and wished him well.".

We can also eliminate A and D, as the contract stated nothing about dents or the oil level in the car.

The answer is C, as the representative failed to have Tim initial on the Check-Out sheet. That is a requirement for the contract to be valid, as stated. "The approximate fuel level will be recorded on the Check-Out sheet and verified with initials by the vehicle Renter.". However, Tim never initialed by the fuel level, as stated here. "...the agency representative turned on the car, took note of the fuel level, and indicated it on the Check-Out sheet. Since Tim didn’t have any questions, the clerk handed him the keys and a copy of the Check-Out sheet and wished him well.". No where here does it state that Tim initialed on the Check-Out sheet, meaning that he didn't. Him not doing so invalidates the contract.

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2 years ago

If it is 9'oclock now what time will it be in 16hours time

Oksi-84 [34.3K]

Answer:

1 AM

Step-by-step explanation:

9AM(start time) to 9PM = 12 hours + the other 4 Hours, 10PM, 11PM, 12PM, 1AM(end time).

7 0

2 years ago