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Liula [17]
3 years ago
13

I need help with the equation.

Mathematics
2 answers:
natulia [17]3 years ago
8 0

Answer:

(x - 3)² + (y + 9)² = 25

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r is the radius

Given area = 25π , that is

πr² = 25π ( divide both sides by π )

r² = 25 ( take the square root of both sides )

r = \sqrt{25} = 5

With centre (h, k) = (3, - 9 ) and r = 5 , then

(x - 3)² + (y - (- 9) )² = 5² , that is

(x - 3)² + (y + 9)² = 25

VMariaS [17]3 years ago
4 0

Answer:

hiiiiiiiiiiiii

Step-by-step explanation:

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The value of a car bought new for $28900 decreases 15% each year. Identify the function for the value of the car. Does the funct
Eva8 [605]

Answer:

<u>V (t) = 28,900 - 4,335t</u>

<u>The function clearly represent a decay</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Value of the car = $ 28,900

Annual depreciation = 15% = 0.15

2. Identify the function for the value of the car. Does the function represent growth or decay?

Let y represent the value of the car after t years of utilization, let p the price of the car and d, the annual depreciation, therefore:

V (t) = p - (d * t * p)

Replacing with the values we know:

V (t) = 28,900 - (0.15 * t * 28.900)

V (t) = 28,900 - (0.15 * t * 28.900)

<u>V (t) = 28,900 - 4,335t</u>

<u>The function clearly represent a decay.</u>

8 0
3 years ago
The average number of students per class at a middle school
Tasya [4]

Answer:

s = 22t or \frac{t}{s} = \frac{1}{22}, when s is students and t is teachers.

Step-by-step explanation:

I. Given t = teacher, s = student

When 1 teacher per 22 students so...

        s = 22t

If there're 10 teachers

        s = 22(10)

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Hope that help :)

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2 years ago
What is the value of x?<br> 76+71=124
Kisachek [45]

Answer:

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Step-by-step explanation:

x=48

6 0
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FrozenT [24]

Answer:

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The equation is x is greater than 2. Therefore, the graph needs to shade anything greater than 2, but not 2.

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