6x{2}(5x{3}y{2} how do you is??????

Answers

Answer 1
Answer: you do the parentheses first then you do the ones that don't have parentheses last then your answer u do times y toghter


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What is the equation of a circle with center (-3,-1) that contains the point (1,2)?

Answers

Answer:

The correct answer is,

(x + 3)² + (y +1)² = 25

Step-by-step explanation:

It is given that, What is the equation of a circle with center (-3,-1) that contains the point (1,2)

Formula;-

Equation of the circle passing through the point ( x₁,y₁) with radius r is given by,

(x - x₁)² + (y - y₁)² = r²

To find the radius of circle

r =√[ (1 --3)² + (2 --1)²]

 =√(4² + 3²)

 = √(16 + 9)

 =√25 = 5

To find the equation of the circle

(x₁, x₁) = (-3, -1) and r = 5

(x - x₁)² + (y - y₁)² = r²

(x - -3)² + (y - -1)² = 5²

(x + 3)² + (y +1)² = 25

Answer:

(x + 3)^2 + (y + 1)^2 = 25

Step-by-step explanation:

Equation of a circle with center (h, k) and radius, r.

(x - h)^2 + (y - k)^2 = r^2

The center is (-3, -1), so h = 1, and k = 2.

(x - (-3))^2 + (y - (-1))^2 = r^2

(x + 3)^2 + (y + 1)^2 = r^2

Now we substitute x and y with the values of x and y from the given point, and we solve for r^2.

(1 + 3)^2 + (2 + 1)^2 = r^2

4^2 + 3^2 = r^2

16 + 9 = r^2

r^2 = 25

Now that we know r^2, we substitute it into the equation above.

(x + 3)^2 + (y + 1)^2 = 25

What is the approximate area of a circle with a radius of 13cm? A.40.8cm² B.530.7cm² C.784cm² D.2461.8cm²

Answers

It would be B (530.7) because if you do 3.14 x 13 x 13 (Or to the second power) Then you get 530.66, the round to the nearest tenths 
the area of a circle can be found by the formula A=pi*r^2. Pi equals 3.14 so multiply that by 13^2. 13^2 equals 169. So 3.14 * 169 = 530.66 cm^2 and that rounded is B) 530.7cm^2

Socks cost $2 per pair. The cost of n pairs is $2n. John says that the cost of 6 pairs is $26 and the cost of 7 pairs is $27. Is this correct? What did John do wrong?

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John just added the number 6 and 7 after the 2 and he thought that if 2 times n is 2n then he thought he thought that, 2 multiply by 6 would be 26 and 2 times 7 is 27 by the example of 2n. Sorry if I confused you

The cost C (in dollars) of making n feet of cabinet is represented by C = 18n + 45.How many feet of cabinet are made when cost is $144?

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The amount of board is 5.5 feet because 18*5.5=99 and 144-45 is 99.

Toni Mahoney is using Biscuit Betty's recipe that requires 5 1/3 pounds of flour to make biscuits for her brunch. Suddenly, Toni learns that 4 times as many people are coming to her bunch than originally planned. How much flour will Toni need to make her biscuits? Explain how tou got your answer.

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21 1/3 pounds of flour. We know it takes 5 1/3 pounds of flour for one brunch. So, if there are 4 times as many people, we have to multiply 5 1/3 by 4. After you do 5 1/3 times 4 you will get 21 1/3 pounds of flour.

The product of 84.12 and which number will have three decimal places?A. 4.22
B. 10.51
C. 14.163
D. 19.3

Answers

Answer:

c. 14.163

Step-by-step explanation:

We are given a number 84.12 and we need to find a number that when multiplied with 84.12 will give a product with three decimal places. Let's analyze each option