(4.5+7.6)-8 ÷ 2.5 help me please

Answers

Answer 1
Answer:

The simplified value of the expression  (4.5 + 7.6) - 8 ÷ 2.5 is 8.9.

What is the PEMDAS rule?

PEMDAS rule states the correct order of simplifying an expression is as follows -: Parenthesis, exponents, multiplications, divisions, additions, and, subtractions.

Given, An expression (4.5 + 7.6) - 8 ÷ 2.5.

First, we'll solve what's inside the parenthesis.

(4.5 + 7.6) - 8 ÷ 2.5.

= 12.1 - 8 ÷ 2.5.

= 12.1 - 3.2.

= 8.9.

learn more about the PEMDAS rule here :

brainly.com/question/29172059

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Answer 2
Answer:

Answer:

The answer is 1.64

Step-by-step explanation:

4.5 + 7.6 = 12.1

12.1 - 8 = 4.1

4.1 ÷ 2.5 = 1.64

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Answers

Answer:

where is the coordinate plane picture?

Step-by-step explanation:

Picture?

Answer:

You forgot to add the picture.

Step-by-step explanation:

Organizers of an outdoor summer concert in Toronto are concerned about the weather conditions on the day of the concert. They will make a profit of $31,000 on a clear day and $10,000 on a cloudy day. They will make a loss of $5,000 if it rains. The weather channel has predicted a 47% chance of rain on the day of the concert. Calculate the expected profit from the concert if the likelihood is 14% that it will be sunny and 39% that it will be cloudy.

Answers

Answer: Expected profit is $5,750

Step-by-step explanation:

Given data:

Profit on clear day = $30,000

Profit on a cloudy day = $10,000

Loss when it rains = $5,000

Likelihood = 14%

Sunny = 39%

Solution

First we apply the Expected profit formula

= (30,000*0.14)+(10,000*0.39)+(-5000*0.47)

= $4200 + $3900 + ($2350)

= $8100 + ($2350)

= $5,750

The calculated expected profit is $5,750.

Help please as fast as you can

Answers

Answer: D, the fourth option.

Step-by-step explanation:

The Answer is D no problem

red and blue ceramic tiles are laid according to a pattern such that every 21 red tiles used, 4 blue tiles are used. if a total of 425 tiles are used, how many of them are blue? setup a proportion for this scenario( use x for your unknown number of blue tiles).

Answers

Using proportions, it is found that there are 68 blue tiles.

  • This question is solved by proportions, using a rule of three.
  • For every 21 red tiles used, 4 blue tiles are used, hence, out of every 25 tiles, 4 are blue. How many blue tiles are there out of 425?

The rule of three is:

4 blue - 25 total

x blue - 425 total

Applying cross multiplication:

25x = 4(425)

x = (4(425))/(25)

x = 68

There are 68 blue tiles.

To learn more about proportions, you can check brainly.com/question/24372153

Final answer:

To determine the number of blue tiles used in a pattern, a proportion can be set up with the ratio of red to blue tiles and the total number of tiles. By setting the unknown number of blue tiles as x and cross-multiplying, we find that there are 68 blue tiles used.

Explanation:

To solve how many blue tiles are used, we can set up a proportion based on the given pattern. For every 21 red tiles, there are 4 blue tiles. If a total of 425 tiles are used, we can express this relationship as a fraction:



Red tiles : Blue tiles = 21 : 4



Since the total number of tiles is 425, we can express the unknown number of blue tiles as x. The number of red tiles would then be 425 - x. Our proportion is:



21 / 4 = (425 - x) / x



Cross-multiplication gives us:



21x = 4(425 - x)



Solving for x gives us:



21x = 1700 - 4x



21x + 4x = 1700



25x = 1700



x = 1700 / 25



x = 68



So, there are 68 blue tiles used.

Many fundraisers ask for donations using e-mail and text messages. The paper "Now or Never! The Effect of Deadlines on Charitable Giving: Evidence From Two Natural Field Experiments" ( Journal of Behavioral and Experimental Economics [2016]: 1-10) describes an experiment to investigate whether the proportion of people who make a donation when asked for a donation by e-mail is different from the proportion of people who make a donation when asked for a donation in a text message. In this experiment, 1.32% of those who received and opened an e-mail request for a donation and 7.77% of those who received a text message asking for a donation actually made a donation. Assume that the people who received these requests were randomly assigned to one of the two groups (e-mail or text message) and suppose that the given percentages are based on sample sizes of 2000 (the actual sample sizes in the experiment were much larger). a. The study described is an experiment with two treatments. What are the two treatments?
b. Use a 90% confidence interval to estimate the difference in the proportions who donate for the two different treatments
c. Is there convincing evidence that the proportion who make a donation is not the same for the two different methods? Carry out a hypothesis test using a significance level of 0.05.
d. Is there convincing evidence that the proportion who make a donation after receiving an email is smaller than the proportion who make a donation after receiving a text message? Carry out a hypothesis test using a significance level of 0.10.

Answers

Answer:

IT SAYS YOU IN COLLEGE SOOO YOU SHOULD BE ABLE TO ANSWER IT YOUR SELF

Step-by-step explanation:

Solve the literal equation for y
3=5x+6y

Answers

Answer:

y=1/2-5x/6

Step-by-step explanation:

Answer:

y=1/2-5x/6

if this is helpful than good job