Ask question

Ask question

All categories

2 years ago

9

Please I don’t know how to do this

2 answers:

ivanzaharov [21]2 years ago

7 0

Answer:

Step-by-step explanation:

Hope this helps u!!

Andru [333]2 years ago

6 0

Answer:

somewhere on the y axis so ig -4,-2?

Step-by-step explanation:

You might be interested in

For each of the following equations,give the centre and radius of the circle.

allsm [11]

Answer:

a) Center is (0,0) and radius r = 5

b) Center is (0,0) and radius r = 1

d) Center is (5,3) and radius r = 9

e Center is (-2,1) and radius r = 3

g) Center is (-1,-3) and radius r = 7

h) Center is (0,0) and radius r = 2.5

Step-by-step explanation:

<u><em>a)</em></u>

Given circle x² + y² = 25

The standard form of circle equation is

( x-h)² +(y-0)² = r²

Center is (0,0) and radius r = 5

b)

Given circle x² + y² = 1

The standard form of circle equation is

( x-h)² +(y-0)² = r²

Center is (0,0) and radius r = 1

d)

Given circle (x-5)² + (y-3)² = 81

The standard form of circle equation is

( x-h)² +(y-0)² = r²

(x-5)² + (y-3)² = 9²

Center is (5,3) and radius r = 9

e)

Given circle (x+2)² + (y+1)² = 9

The standard form of circle equation is

( x-h)² +(y-0)² = r²

(x+2)² + (y+1)² = 3²

Center is (-2,-1) and radius r = 3

g)

Given circle (x+1)² + (y+3)² = 49

The standard form of circle equation is

( x-h)² +(y-0)² = r²

(x+1)² + (y+3)² = 7²

Center is (-1,-3) and radius r = 7

h)

Given circle x² + y² = 6.25

The standard form of circle equation is

( x-h)² +(y-0)² = r²

Given circle x² + y² = (2.5)²

Center is (0,0) and radius r = 2.5

5 0

3 years ago

The sum eighty two dollars to spend on seven books after buying them she had twelve dollars how much did each book cost

Misha Larkins [42]

So first of all write down 82 / 12 and do the problem.Divide 82 / 12.

Next you get the answer which is,based on a calculator,which is <span>6.83333333333.

But because it's money well I'm guessing it could be 6.83 or 6.833 or the real answer.

The question is confusing but I hope I could help :D</span>

7 0

3 years ago

Y = -9x - 2; (4, -37)

Karo-lina-s [1.5K]

Answer:

B. No the ordered pair does not satisfy the equation

Step-by-step explanation:

y = -9x - 2

Substitute the point in and see if it is true

-37 = -9(4) -2

-37 = -36 -2

-37 = -38

This is not true so the point is not a solution

6 0

3 years ago

(-2^3x2^-1)^-2=1/16 <br> Showing exponent properties how can this be done?

rjkz [21]

14684567890325678904

7 0

3 years ago

A large company put out an advertisement in a magazine for a job

vova2212 [387]

Answer:

<em>C(19)=12 responses</em>

Step-by-step explanation:

<u>Exponential Decay Function</u>

The exponential function is frequently used to model natural growing or decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function can be expressed as follows:

$C(t)=C_o\cdot(1-r)^t$

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The company puts out an advertisement for a job opening. Initially, the company got 90 responses to the advertisement. Each day, the responses declined by 10%.

This is an example where the decay model can be used to calculate the responses to the advertisement at the day t.

The initial value is Co=90, the decaying rate is r=10% = 0.10. The model is written as:

$C(t)=90\cdot(1-0.1)^t$

Calculating:

$C(t)=90\cdot(0.9)^t$

We are required to calculate the number of responses at day t=19, thus:

$C(19)=90\cdot(0.9)^{19}$

C(19)=12 responses

8 0

2 years ago