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3 years ago

6

The cd club offers a discount when you purchase 3 or more cd’s. If the price of each cd is reduced by $1.50 and the cost of 3 cd

’s is $35.97, find the original price of each cd.

1 answer:

Natali5045456 [20]3 years ago

4 0

11.99 per cd's your welcome

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Which explanation provides the best real-world scenario of the graph? If an object is dropped from a height of 38 feet, the func

ikadub [295]

The equation that models the movement of the object is:
$h (t) = (1/2) * (a) * (t ^ 2) + v0 * t + h0
$
Where,
t: time
a: acceleration due to gravity
v0: initial speed
h0: initial height
Suppose that the object falls with zero initial velocity and from a height of 38 feet.
The equation that models the problem is:
$h (t) = -16t ^ 2 + 38
$
Answer:
If an object is dropped from a height of 38 feet, the function h (t) = -16t2 + 38 gives the height of the object after seconds

5 0

3 years ago

F(x) = <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%2B7%7D%20-%5Csqrt%7Bx%5E2%2B2x-15%7D" id="TexFormula1" title="\sqrt{x+7} -\

elena-s [515]

Answer:

x >= -7 ................(1a)

x >= 3 ...............(2a1)

Step-by-step explanation:

f(x) = $\sqrt{x+7}-\sqrt{x^2+2x-15}$ .............(0)

find the domain.

To find the (real) domain, we need to ensure that each term remains a real number.

which means the following conditions must be met

x+7 >= 0 .....................(1)

AND

x^2+2x-15 >= 0 ..........(2)

To satisfy (1), x >= -7 .....................(1a) by transposition of (1)

To satisfy (2), we need first to find the roots of (2)

factor (2)

(x+5)(x-3) >= 0

This implis

(x+5) >= 0 AND (x-3) >= 0.....................(2a)

OR

(x+5) <= 0 AND (x-3) <= 0 ...................(2b)

(2a) is satisfied with x >= 3 ...............(2a1)

(2b) is satisfied with x <= -5 ................(2b1)

Combine the conditions (1a), (2a1), and (2b1),

x >= -7 ................(1a)

AND

(

x >= 3 ...............(2a1)

OR

x <= -5 ................(2b1)

)

which expands to

(1a) and (2a1) OR (1a) and (2b1)

( x >= -7 and x >= 3 ) OR ( x >= -7 and x <= -5 )

Simplifying, we have

x >= 3 OR ( -7 <= x <= -5 )

Referring to attached figure, the domain is indicated in dark (purple), the red-brown and white regions satisfiy only one of the two conditions.

3 0

3 years ago

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28 squared minus 39x minus 80 equals 0

Rudik [331]

Answer:

x = 704/39 ( <----Fraction)

Step-by-step explanation:

28 squared minus 39x minus 80 equals 0

784-39x-80=0 evaluate the power

704-39x=0 Subtract the numbers

-39x=-704 move the constant to the right hand side and change it's sign

Divide on both side to get x = 704/39

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3 years ago

Find 6m if m = 5/13<br><br> Please help<br><br> Leave your answer in fraction form please

gladu [14]

Step-by-step explanation:

or, 6m=5/13

or, m=5/13 ×6m

m=30/13

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3 years ago

-7=-x <br><br> One step equations ( Find X)

Marysya12 [62]

Answer:

answer of your question is

-x= -7

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2 years ago

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