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mylen [45]
3 years ago
10

Helpppppppppppppppppppppppppp

Mathematics
1 answer:
ddd [48]3 years ago
5 0
Answer:
The last choice is the correct one

Explanation:
We can solve this question using "difference between squares" which has the following general rule:
a^2 - b^2 = (a+b)(a-b)

For the given question:
p^4 - 16 = (p^2 - 4)(p^2 + 4)

Now, p^2 - 4 can be further factorized using difference between squares, therefore:
p^4 - 16 = (p-2)(p+2)(p^2 + 4)

Hope this helps :)
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BRAINLIEST..........show expressions too<333
vovikov84 [41]

Answer:

9.) t=.05m+20

10.) t=.10m+5

11.) 300 minutes of calling would make the two plans equal.

12.) Company B.

Step-by-step explanation:

Let <em>t</em> equal the total cost, and <em>m,</em> minutes.

Set up your models for questions 9 & 10 like this:

<em>total cost = (cost per minute)# of minutes + monthly fee</em>

Substitute your values for #9:

t=.05m+20

Substitute your values for #10:

t=.10m+5

__

To find how many minutes of calling would result in an equal total cost, we have to set the two models we just got equal to each other.

.10m+5=.05m+20

Let's subtract 5 from both sides of the equation:

.10m=.05m-15

Subtract .05m from both sides of the equation:

.05m=15

Divide by the coefficient of m, in this case: .05

m=300

__

Let's substitute 200 minutes into both of our original models from questions 9 & 10 to see which one the person should choose (the cheaper one).

Company A:

t=.05(200)+20

Multiply.

t=10+20

Add.

t=30

Company B:

t=.10(200)+5

Multiply.

t=20+5

Add.

t=25

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6 0
3 years ago
Reena scored 25 marks out of 30 in Math test and 35 out of 42 in Science test. In which test has she scored better?
alexandr402 [8]

Step-by-step explanation:

None is better they have the same score in percentage.

5 0
3 years ago
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Elijah earn 200$ for 8 hours of work. what is the unit rate(in dollars per hour)
Marysya12 [62]

Answer: 25 dollars per hour.

Step-by-step explanation: Rate this for free toast.

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3 years ago
When a number is increased by 40 % it gives 84. Find the original number
Julli [10]
I believe the answer is $33.60?
3 0
3 years ago
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Draw and upload a box plot representing the following data set: 22, 35, 18, 30, 37, 20, 40, 18, 38, 38, 23, 19, 27, 31, 34.
marshall27 [118]
See the attached image for the box plot drawing. The five number summary is given below

Min = 18
Q1 = 20
Median = 30
Q3 = 37
Max = 40

7 0
3 years ago
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