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Deffense [45]
3 years ago
13

What is every in math

Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0
Multiplication djsnnzz
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Assume that an 18 month CD purchased for $7000 pays an APR of 3% come compounded monthly. What is the APY? ( round your answer t
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2 years ago
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50 points!! help asap pls
Korvikt [17]

Answer:

(x+4)² + (y+9)² = 100

Step-by-step explanation:

We want to find the equation of a circle with a radius of length 10 and a center at (-4, -9).

general equation of circle : (x-h)² + (y-k)² = r²

where (h,k) is at center and r = radius

the center is at (-4,-9) so h = -4 and k = -9 and the circle has a radius of 10 so r = 10

so we have (x-h)² + (y-k)² = r²

h = -4 , k = -9  and r = 10

(x-(-4))² + (y-(-9))² = 10²

==> apply double negative sign rule and remove parenthesis for -(-4) and -(-9)

(x+4)² + (y+9)² = 10²

==> simplify exponent

(x+4)² + (y+9)² = 100

and we are done!

6 0
2 years ago
Read 2 more answers
What are the vertex and x intercepts of the graph of y=(x+4)(x-2)? Select one answer for the vertex and one for the x intercepts
lbvjy [14]

Answer:

The x-intercepts points are (-4 , 0) , (2 , 0) ⇒ answer (A)

The vertex point is (-1 , -9) ⇒ answer (E)

Step-by-step explanation:

* Lets revise the quadratic equation

 y = ax² + bx + c

- To find the x-intercepts put y = 0

- To find the vertex use the rule:

# x-coordinate of the vertex of the parabola which represents

  the quadratic function graphically = -b/2a

# To find the y-coordinate substitute the value of the x-coordinate

  of the vertex in the equation

* Lets use these information to solve the problem

∵ y = (x + 4)(x -2)

- To find the x-intercepts let y = 0

∴ (x + 4)( x - 2) = 0 ⇒ put each bracket = 0

∴ x + 4 = 0 and x - 2 = 0

∵ x + 4 = 0 ⇒ subtract 4 from the both sides

∴ x = -4

∵ x - 2 = 0 ⇒ add 2 to both sides

∴ x = 2

* The x-intercepts points are (-4 , 0) , (2 , 0)

- Now lets use the foil method to multiply the two brackets

∵ (x + 4)(x - 2) = x² - 2x + 4x - 8 ⇒ collect the like terms

∴ (x + 4)(x - 2) = x² + 2x - 8

∴ y = x² + 2x - 8

* Now lets find the value of a and b to find the x-coordinate

 of the vertex point

∵ a = 1 , b = 2

∵ x-coordinate of the vertex = -b/2a

∴ x = -2/2(1) = -1

- Substitute the value of x in y

∴ y = (-1)² + 2(-1) - 8 = 1 - 2 - 8 = -9

∴ The vertex point is (-1 , -9)

* The vertex point is (-1 , -9)

3 0
3 years ago
Find the unit rate. $68 for 8 1/2 hour
aalyn [17]

Step-by-step explanation:

Unit rate = 68 ÷ 8.5 = 8

8 1/2 = 8.5 hours

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3 years ago
PLEASE HELP ME!!!<br>I don't understand this at all
eduard
I think the answer is 180 but im not 100% on that
8 0
3 years ago
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