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ruslelena [56]
2 years ago
15

This table shows a proportional

Mathematics
2 answers:
kaheart [24]2 years ago
7 0

Answer:

D

Step-by-step explanation:

gavmur [86]2 years ago
4 0

Answer:

D (6, 21)

Step-by-step explanation:

Since the ratio of the corresponding values of x and y given in the table is 2 : 7

So, 6/ 21 = 2/7 = 2: 7

Thus, D (6, 21) is the correct answer.

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Which of the following are roots of the following polynomial x^3-11x^2+33x+45
Mandarinka [93]
For x^3-11x^2+33x+45 , we can make it an equation so <span>x^3-11x^2+33x+45=0. Next, we can find out if -1 or -3 is a factor. If -1 is a factor, than (x+1) is factorable. Using synthetic division, we get 

      x^2-12x+45
       ___ ________________________
x+1 | x^3-11x^2+33x+45

      - (x^3+x^2)
       _________________________
            -12x^2+33x+45
          - (-12x^2-12x)
          ______________
            45x+45
         -(45x+45)
___________
0


Since that works, it's either B or D. We just have to figure out when
</span> x^2-12x+45 equals 0, since there are 3 roots and we already found one. Using the quadratic formula, we end up getting (12+-sqrt(144-180))/2=
(12+-sqrt (-36))/2. Since sqrt(-36) is 6i, and 6i/2=3i, it's pretty clear that B is our answer
8 0
3 years ago
The sum of the interior angles of a polygon with n sides is 1980°. Find n.
natka813 [3]

Answer:

n = 13

Step-by-step explanation:

The sum of the measures of the interior angles of an n-sided polygon is

(n - 2)180

Set (n - 2)180 equal to 1980 and solve for n.

(n - 2)180 = 1980

Divide both sides by 180.

n - 2 = 11

Add 2 to both sides.

n = 13

3 0
2 years ago
Read 2 more answers
Round 2344.7968574 to the nearest hundred-thousandth
Leya [2.2K]

Answer:

2344.79686

Step-by-step explanation:

The fifth place to the right of the decimal point is the hundred-thousandth spot. Since the number following is 7, we round up, thus resulting in 2344.79686.

4 0
2 years ago
Read 2 more answers
The tables below represent the profits earned by a merchandiser from four new consignments of t-shirts. Each consignment contain
steposvetlana [31]
The first consignment shows no association between the t-shirt size and the profit. 

In the second consignment, the bigger the t-shirt size, the smaller the profit. There is an inverse relationship between the two variables. 

In the third and fourth consignment, the bigger the size, the larger the profit. There is a direct relationship between the two variables. 
5 0
2 years ago
Read 2 more answers
if one gallon of paint covers 825 square feet, how much paint is needed to cover 2640 square feet? Make a prediction ​
Nitella [24]

Answer:

3.2 gallons

Step-by-step explanation:

Write a proportion:

1 gallon / 825 square feet = x / 2640 square feet

Solve:

x = 3.2 gallons

7 0
3 years ago
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