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4 years ago

(3d - 4)(5d - 2) expanded

Mathematics

1 answer:

Katen [24]4 years ago

6 0

Answer:

15d^2 - 26d + 8

Step-by-step explanation:

(3d - 4)(5d - 2)

15d^2 - 6d - 20d + 8

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For a giveaway,a local radio station is putting together goodie bags. The bags will include tickets and posters. Each bag will r

max2010maxim [7]

Answer:

a) The greatest number of goodie bags is 18.

b) There will be 3 tickets and 2 posters in each goodie bag.

Step-by-step explanation:

a) To find greatest number of goodie bags that can be created from 54 tickets and 36 posters we will find GCF of 54 and 36.

Factors of 54 are 1, 2, 3, 6, 9, 18, 27, and 54.

Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.

We can see that greatest common factor of 54 and 36 is 18. Therefore, greatest number of goodie bags that can be created is 18.

b) Let us find the number of each type of giveaway in each bag.

$\text{ Number of tickets in each goodie bag}=\frac{54}{18} =3$

$\text{ Number of posters in each goodie bag}=\frac{36}{18} =2$

Therefore, there will be 3 tickets and 2 posters in each goodie bag as the greatest number of goodie bags is 18.

4 0

4 years ago

This is question is Estimate. 3245 dived 8 Choose 1 answer: A 4 b 40 c 400 d 4000

trapecia [35]

Answer:

<h3>The answer is option C.</h3>

Hope this helps you

4 0

4 years ago

Read 2 more answers

10. Which equations could be used to solve<br> for x? Circle all that apply.

Wewaii [24]

Answer: B and D

Step-by-step explanation:

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3 years ago

What is the probability of having 53 Mondays in a leap year?

Ronch [10]

Answer:

1/7

Step-by-step explanation:

There are 52 weeks in a year. Each have one Monday. Leap years have a total of 366 days. There are 7 days of the week. Monday is one of them, so it'll be a 1/7 chance.

5 0

4 years ago

1.44 Make-up exam: In a class of 28 students, 27 of them took an exam in class and 1 student took a make-up exam the following d

Olenka [21]

Answer:

a) Decrease

b) New mean = 78.43

c) Decrease

Step-by-step explanation:

We are given the following in the question:

Total number of students in class = 28

Average of 27 students = 79

Standard Deviation of 27 students = 6.5

New student's score = 63

a) The new student's score will decrease the average.

b) New mean

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean = \dfrac{\displaystyle\sum x_i}{27} = 79\\\\\sum x_i = 27\times 79 = 2133$

New mean =

$\text{ New mean} =\dfrac{ \displaystyle\sum x_i +63}{28}\\\\ =\dfrac{2133+63}{28}= \dfrac{2196}{28} = 78.43$

Thus, the new mean is 78.43

c) Since the new mean decreases, standard deviation for new scores will decrease.

This is because the new value is within the usual values i.e. within two standard deviations of the mean. So, this wont cause a lot of variation as this value will be closer to already available data values. Also number of observations (n) in the denominator is increasing. Based on both these points we can conclude that standard deviation will decrease

Formula for Standard Deviation:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

7 0

3 years ago