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mihalych1998 [28]
3 years ago
15

Marlena has $74 in a checking account and downloads 14 equally priced albums from Itunes. She pays with a check and now has -$52

in her account. how much did each album cost.
Mathematics
1 answer:
Evgesh-ka [11]3 years ago
5 0

She has $74 and now -$52, she gone to 0 and to -52, so she spends 74 + 52 = $126

Now let's see

14 albums ---------------------------------- $126

1 album ----------------------------------------- $x

14 . x = 1 . 126

14x = 126

x = 126/14

x = 9

Each album costs $9

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The diameter of a spherical balloon that is being filled with air is increasing at the rate of 3 inches more than the time, t. W
bixtya [17]
It is given that the diameter of the sphere increases <span>at the rate of 3 inches more than the time, t. 
This means that:
at a certain time = t seconds
the diameter of the sphere will be equal to t + 3 

Based on this:
at t = 3 seconds
diameter of the sphere = t + 3 = 3 + 3 = 6 inches = </span><span>0.1524 meters
and radius of sphere = 0.5 x </span><span>0.1524 = 0.0762 meters

Volume of the sphere can be calculated using the following rule:
volume of sphere = (4/3) x pi x (radius)^3
Substituting in this equation, we can get the volume of the sphere at t = 3 seconds as follows:
volume at t=3 seconds = (4/3) x 3.14 x (</span>0.0762)^3 = 1.8533 x 10^-3 m^3
5 0
3 years ago
Determine the smallest integer value of x in the solution of the following inequality.
Gekata [30.6K]

Answer:

5x>-18+5

5x>-13

5x/5>-13/5

x>-2.6

4 0
3 years ago
Reflect the point in the x-axis
Veseljchak [2.6K]

Answer:

first on will be 3 next one will be 5 next one will be 2

Step-by-step explanation:

I know this bc I took that same worksheet

3 0
3 years ago
Read 2 more answers
Help me!!! I am so confused
cupoosta [38]

Answer:

\boxed{x^{2} + 2x - 8}

Step-by-step explanation:

6. Practice

The dimensions of the current park are x long and x wide.

The new park will be 4 longer and 2 thinner.

Its new dimensions will be x + 4 long and x – 2 wide.

Its new area will be

A = width × length = (x – 2)(x + 4)

Find the product

\begin{array}{lll}\textbf{Steps} & \textbf{Problem: }(x - 2)(x + 4) & \\\textbf{1. List variables} & a = x - 2 & \\ & b = x & \\ & c = 4 &\\\textbf{2. Distribute (x - 2)} & (x -2)(x + 4)\\ & = (x - 2)(x) + (x - 2)(4)\\\textbf{3. Distribute x and 4} & x^{2} -2x + 4x - 8\\\textbf{4. Combine like terms}& x^{2} + 2x - 8\\\end{array}\\\text{The area of the updated skatepark will be }\boxed{\mathbf{ x^{2} + 2x - 8}}

5 0
3 years ago
Molly, Landy and Jasmine are hairdressers. Molly and Landy have 678 hairpins altogether. Landy and Jasmine have 984 hairpins alt
meriva

Answer:

219 hairpins.

Step-by-step explanation:

Let, Jasmine has x hairpins.

Number of hairpins of Molly = x \times \frac{3}{5}  = \frac{3x}{5}

As question said, Molly and Landy have 678 hairpins together.

We have calculated that Molly have \frac{3x}{5} hairpins.

So, the number of hairpins of Landy = 678 - \frac{3x}{5}

Now,

Landy and Jasmine have 984 hairpins together, so we can write from the above as,

x+ (678-\frac{3x}{5} ) = 984

x - \frac{3x}{5} = 984 - 678

\frac{2x}{5} = 306

2x = 1530

x = 765

It means, Jasmine has 765 hairpins.

Since Jasmine and Landy have 984 hairpins together.

So,

Number of hairpins of Landy = 984 - 765 = 219

So, Landy has 219 hairpins.

4 0
4 years ago
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