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stira [4]
3 years ago
12

HELPPP I HAVE EXAM WITH TIIME PLEASE HELP MEEEE IM LOSTT

Mathematics
1 answer:
Scilla [17]3 years ago
4 0
A) Her total pay is $3120
b) She sold 33 copies
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Please help me this is hard please explain it to
larisa [96]

Answer:

6

Step-by-step explanation:

2= 2/1

( 2/1 ) / ( 1/3 )

2x3 = 6

1x1 = 1

6/1 = 6

4 0
3 years ago
Read 2 more answers
The third through the fifth terms of a geometric sequence are given by a3 = 18, a4 = 27 , and a5 = 81/2
Kaylis [27]

Let <em>a</em> be the first term in the sequence. If <em>r</em> is the ratio between consecutive terms, then the second term is <em>ar</em>, the third term is <em>ar </em>^2, the fourth is <em>ar</em> ^3, and so on, up to the <em>n</em>-th term <em>ar</em> ^(<em>n</em> - 1).

So the third, fourth, and fifth terms are such that

<em>ar</em> ^2 = 18

<em>ar</em> ^3 = 27

<em>ar</em> ^4 = 81/2

Solve for <em>a</em> and <em>r</em> :

(<em>ar</em> ^3) / (<em>ar</em> ^2) = 27/18   =>   <em>r</em> = 3/2

<em>ar</em> ^2 = <em>a</em> (3/2)^2 = 9/4 <em>a</em> = 18   =>   <em>a</em> = 8

Then the <em>n</em>-th term in the sequence is

<em>ar</em> ^(<em>n</em> - 1) = 9 (3/2)^(<em>n</em> - 1)

You can rewrite this by first rewriting 9 = 3^2, then

9 (3/2)^(<em>n</em> - 1) = 3^2 * 3^(<em>n</em> - 1) / 2^(<em>n</em> - 1) = 3^(<em>n</em> + 1)/2^(<em>n</em> - 1)

6 0
3 years ago
What is the equation of a line with slope -1/2 passing through (-5,4)?
elena-14-01-66 [18.8K]
For this question you need to use what's called point-slope form. It's named this way because you can use it if you have both the slope and a point at which the line passes through. That said, the equation is as follows:

y - y1 = m(x - x1)

Both y1 and x1 represent the y and x coordinates you are given in the question. Also, m represents the slope of the line that you are given. Knowing this, our equation now looks like this:

y - 4 = -0.5(x - (-5))

And now simplify:

y - 4 = -0.5(x + 5)
y - 4 = -0.5x - 2.5

y = -0.5x + 1.5
4 0
4 years ago
How do i find the area of a triangle if the base is x and the height is 2x
yuradex [85]

Answer:

A= (1/2)(X)(2X)

(1/2)(2X^2)

= (2X^2)/2

6 0
3 years ago
The area of the base of the cone is 9π^2 in and a height of 6 in. What is the volume of the cone, in terms of π? Need answer ASA
Sidana [21]

Answer: 18pi^2

Step-by-step explanation:

Volume of cone formula = 1/3 x base area x height

so 1/3 x 9pi^2 x 6

= 18pi^2

4 0
3 years ago
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