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hram777 [196]
3 years ago
12

It costs 0.70$ to download an individual song and $5 to download an album. Eldred has 20 dollars to spend downloading music. Wha

t is an equation relating to the number of individual songs,s, as songs, and a, as albums
Mathematics
1 answer:
katrin2010 [14]3 years ago
8 0

Answer:

0.70x+5x=20

Step-by-step explanation:

This is because we are not given the exact number for the equation, so we use x to represent the missing numbers.

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I need the answer for this exact question
denis23 [38]

Answer:

y=\frac{7}{2}x-20

Step-by-step explanation:

Let the equation of the line be y-y_1=m(x-x_1) where, 'm' is its slope and (x_1,y_1) is a point on it.

Given:

The equation of a known line is:

y=-\frac{2}{7}x+9

A point on the unknown line is:

(x_1,y_1)=(4,-6)

Both the lines are perpendicular to each other.

Now, the slope of the known line is given by the coefficient of 'x'. Therefore, the slope of the known line is m_1=-\frac{2}{7}

When two lines are perpendicular, the product of their slopes is equal to -1.

Therefore,

m\cdot m_1=-1\\m=-\frac{1}{m_1}\\m=-\frac{1}{\frac{-2}{7} }=\frac{7}{2}

Therefore, the equation of the unknown line is determined by plugging in all the given values. This gives,

y-(-6))=\frac{7}{2}(x-4)\\y+6=\frac{7}{2}x-14\\y=\frac{7}{2}x-14-6\\\\y=\frac{7}{2}x-20

The equation of a line perpendicular to the given line and passing through (4, -6) is y=\frac{7}{2}x-20.

3 0
3 years ago
A major stadium has 45,000 seats. fans bought 5/8 of the seats. how many seats are left?
topjm [15]

fans bought 5/8 so there is 3/8 still left

45000 * 3/8 = 16,875 seats are left

7 0
4 years ago
Read 2 more answers
Each marble bag sold by Josh's Marble Company contains 7 yellow marbles for every 5 red marbles. If a bag has 25 red marbles, ho
elixir [45]
5 red : 7 yellow
25 red: ? Yellow

5 x 5 is 25 therefore the multiplier is 5
We multiply 7 by 5 which is 35

Therefore 24 red : 35 yellow

35 yellow marbles
8 0
3 years ago
What’s 20 over 14 as a percentage
sergey [27]

Answer: 14 / 20 = 70%

Step-by-step explanation:

8 0
4 years ago
What is the equation on the graph
Hoochie [10]

Answer:

b

Step-by-step explanation:

the answer is b

5 0
4 years ago
Read 2 more answers
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