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2 years ago

Write the equation of the circle with a radius 7 and center (13, 15). HELP ASAP!!!

Mathematics

1 answer:

ruslelena [56]2 years ago

8 0

Answer:

Option b is the correct answer

$(x - 13)^2 + (y - 15)^2 = 49$

Step-by-step explanation:

$(x - 13)^2 + (y - 15)^2 = 7^2$

$(x - 13)^2 + (y - 15)^2 = 49$

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Brett painted three walls. Each wall was 9 ft tall and 12 ft long. How much wall area did he paint

julsineya [31]

Answer:

First we need to calculate the are of each wall, since we alredy knew the length (l) and the width (w) which is the height of the wall in this case:

A = wl = 9 . 12 = 108 (ft²)

We also know that he painted 3 walls, we need to multiply our first result by 3, in other words, the area of wall that Brett painted is the sum of the area of three walls: 108 . 3 = 324 (ft²)

8 0

3 years ago

Read 2 more answers

Help!!! Will mark Brainliest!

AleksAgata [21]

Answer:

(x-5)² + y² = 4

Step-by-step explanation:

formula of circle: (x-h)² + (y-k)² = r² where (h,k) is coordinate of center and r is radius

center: (5 , 0) r = 2

Equation: (x-5)² + y² = 4

4 0

3 years ago

The Better Baby Buggy Co. has just come out with a new model, the Turbo. The market research department predicts that the demand

dlinn [17]

Answer:

$68

Step-by-step explanation:

We have been given the demand equation for Turbos as $q=-4p+544$ , where q is the number of buggies the company can sell in a month if the price is $p per buggy.

Let us find revenue function by multiplying price of p units by demand function as:

Revenue function: $pq=p(-4p+544)$

$pq=-4p^2+544p$

Since revenue function is a downward opening parabola, so its maximum point will be vertex.

Let us find x-coordinate of vertex using formula $\frac{-b}{2a}$ .

$\frac{-b}{2a}=\frac{-544}{2\times -4}$

$\frac{-b}{2a}=\frac{-544}{-8}$

$\frac{-b}{2a}=68$

The maximum revenue would be the y-coordinate of vertex.

Let us substitute $x=68$ in revenue formula.

$pq=-4(68)^2+544(68)$

$pq=-4*4624+544(68)$

$pq=-18496+36992$

$pq=18496$

Therefore, the company should sell each buggy for $68 to get the maximum revenue of $18,496.

8 0

3 years ago

SUSTITUTION 3X-6Y=2 5X+4Y=1

Montano1993 [528]

3x - 6y = 2
5x + 4y = 1

(-1/3, -1/6)

~Hope I helped!~

6 0

3 years ago

46,054,202 round the underlined number the 5 isunderlined

Scrat [10]

if 5 is to be rounded off, then the rule is, if the next significant digit is equal or greater than 5 it adds up, other wise not..
In this case the next significant digit is 0 which is less than 5 so it will not be added up.

46,054,202 ≈ 46,000,000 Answer

8 0

3 years ago