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Debora [2.8K]
3 years ago
11

is this reletion just a function? Justify your answer. A. Yes, because every x- and y-value is positive. B. no, because two poin

ts with the same y-value have different x-values. C. Yes because every x-value corresponds with a single y-value. D. Yes, because the number of x-values is the same as the number of y-values.
Mathematics
1 answer:
Lilit [14]3 years ago
7 0

Answer:

The element 15 has two arrows pointing to both 7 and 9. This is a clear violation of the requirement to be a function. A function is well behaved, that is, each element in the domain must point to one element in the range. Therefore, this relation is not a function.

Step-by-step explanation:

Btw brainliest me plss

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LOOK AT THE PICTURE BELOW
Katyanochek1 [597]

Answer:

The area of the rectangle is 40 and the area is the triangle is 20 therefore, the area of the shape is 60

Step-by-step explanation:

Rectangle:

8cm x 5cm = 40cm

Triangle <em>(</em><em>1</em><em>/</em><em>2bxh</em><em>)</em>

The base of the triangle would be 8 cm as the top and the bottom of the rectangle is the same width. The height was given to be 5 cm (<em>note the height is the dotted line</em>) Therefore the area of the triangle is half the base which is (8×1/2 = 4) times the height (5); which is 20.

8 0
2 years ago
Read 2 more answers
Aleka and Helene both opened savings accounts that earn 2.5% interest a year. Aleka puts $2,500 into her account. Helene put $1,
Xelga [282]

Given:

Amount in Aleka and Helene accounts represented by the following function:

Aleka: f(x) = 2500(1.025)^x

Helene: g(x) = 1500(1.025)^x + 200x

To find:

The function represents the difference, h(x) = f(x) -g(x), between the value of Aleka's and Helene's total savings after x years.

Solution:

We have,

f(x) = 2500(1.025)^x

g(x) = 1500(1.025)^x + 200x

Now,

h(x) = f(x)-g(x)

h(x) = 2500(1.025)^x-[1500(1.025)^x + 200x]

h(x) = 2500(1.025)^x-1500(1.025)^x - 200x

h(x) = 1000(1.025)^x - 200x

Therefore, the correct option is C.

8 0
3 years ago
10x-(8 + 7x)<br> SIMPLIFY IT ASAP PLEASE
serious [3.7K]

Answer:

10x - 15x

Step-by-step explanation:

Do what's in the parentheses and then write the rest out.  

Hope this helps :)

6 0
3 years ago
Read 2 more answers
A botanist predicts that the height of a certain tree will increase by 2% every year. If the height of the tree is now 50 feet,
Neporo4naja [7]
To answer this kinda question, we gotta tackle it year by year. 
By the end of the first year, the tree would grow by 2% = 102% of its original height.
Year 1: 102% x 50 = 51 feet
Year 2: 103% x 51 = 52.02 feet

Hope I helped!! xx
4 0
4 years ago
17. MODELING WITH MATHEMATICS The data
Ksenya-84 [330]

Answer:

Average annual tuition is $16991 for the year 2020.

Step-by-step explanation:

By using excel for the equation of the line of best fit,

Slope of the line from given data = 380.0286

y - intercept of the line = 11290.1

Therefore, equation of the regression line will be,

y = 380.0286x + 11290.1

Where x = number of years after 2005

Now we have to calculate the average annual tuition in the  year 2020,

By substituting the value of x = 2020 - 2005

                                                 = 15 years

y = 380.0286×(15) + 11290.1

y = 16990.529

  ≈ 16991

Therefore, average annual tuition is $16991 for the year 2020.

6 0
4 years ago
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