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N76 [4]
4 years ago
10

A Web music store offers two versions of a popular song. The size of the standard version is 2.9 megabytes (MB). The size of the

high-quality version is 4.3 MB. Yesterday, there were 620 downloads of the song, for a total download size of 2092 MB. How many downloads of the high-quality version were there?
Mathematics
1 answer:
stepladder [879]4 years ago
7 0
There were 210 downloads of the high quality version. Hope I helped!
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NEED HELP IMMEDIATELY WILL GIVE BRAINLEST NO LINKS
Vikentia [17]

Answer:

fdfdsf

Step-by-step explanation:

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7 0
3 years ago
What is the equation of the line in slope-intercept form?
Marysya12 [62]

Answer:

The equation of the line in slope-intercept form is:

y = x + 4

Step-by-step explanation:

The slope-intercept form of the line equation

y = mx+b

where

  • m is the slope
  • b is the y-intercept

Given the points on the line graph

  • (0, 4)
  • (1, 5)

Determining the slope between (0, 4) and (1, 5)

(x₁, y₁) = (0, 4)

(x₂, y₂) = (1, 5)

Using the formula

Slope = m =  [y₂ - y₁] /  [x₂ - x₁]

                =  [5 - 4] / [1 - 0]

                = 1 / 1  

               = 1

Thus, the slope of the line = m = 1

We know that the value of the y-intercept can be determined by setting x = 0 and determining the corresponding value of y.

From the graph, it is clear

at x = 0, y = 4

Thus, the y-intercept b = 4

now substituting b = 4 and m = 1 in the slope-intercept form

y = mx + b

y = (1)x + 4

y = x + 4

Therefore, the the equation of the line in slope-intercept form is:

y = x + 4

7 0
3 years ago
How much extra money do you need this month to cover<br> these emergencies???<br> Help
victus00 [196]

Answer:

Somewhere between three months and six months of basic living expenses in your emergency fund.

Average Monthly Expenses

$1,000.00

Existing Liquid Savings (Excluding Retirement)

$2,500.00

Easy: Three months, Average: Six months, Difficult: Nine months, Very Difficult: 12 months

8 0
2 years ago
If p + 9 = 25 and p = q, then q + 9 = 25.
Evgesh-ka [11]
P and q both equal 16. This is because, 25 - 9 = 16.
4 0
3 years ago
You place the spring vertically with one end on the floor. You then drop a book of mass 1.20 kg onto it from a height of 0.900 m
Shtirlitz [24]

The question is not complete and this is the complete question;

"A spring of negligible mass has a force constant k = 1500 N/m. You place the spring vertically with one end on the floor. You then drop a book of mass 1.20 kg onto it from a height of 0.900 m above the top of the spring. Find the maximum distance the spring will be compressed. Take the free fall acceleration to be 9.80 m/s².

Answer:

Maximum distance = 12.69cm

Step-by-step explanation:

Using the Law of Conservation of Energy and knowing that the energy of the book that transfers to the spring is the change in the gravitational potential energy of the book, we can say:

PEspring (initial) + PEgravitational (initial) = PE spring(final) + PE gravitational(final)

From the question, we can see that, Initially the spring is uncompressed and so PE spring(initial) = 0J.

Thus, we get:

PE spring(final) = PE gravitational(initial) − PE gravitational(final)

Since, PE spring(final) is the final potential energy that is stored in the spring after dropping the book on it, then, PE gravitational(initial)

is the initial gravitational energy of the book at the height ℎ, while PE gravitational(final) is the final gravitational energy of the book when the spring is compressed by the maximum distance ∆.

Hence, we can write that;

(k/2)(∆x)² = mgh − mg(−∆x)

So,

(k/2)(∆x)² - mg(∆x) - mgh= 0

So, k = 1500; m=1.2kg; g=9.8m/s²; h=0.9m

Thus,

(1500/2)(∆x)² - (1.2x9.8)(∆x) - (1.2 x 9.81 x 0.9) = 0

750(∆x)² - 11.76(∆x) - 10.584 = 0

So this is now a quadratic equation, thus;

Using quadratic formula: x = - b

(∆x) = -b ± √[(b²— 4ac)/2a]

So, (∆x) = -(-11.76) + √[(11.76²— 4(750)(-10.584))/(2x750)]

Or (∆x) = -(-11.76) - √[(11.76²— 4(750)(-10.584))/(2x750)]

Solving for the roots, we have;

(∆x) = - 0.1112 or 0.1269

The maximum distance can’t be negative, so the correct answer will be the positive one.

So (∆x) = 0.1269m or 12.69cm

8 0
3 years ago
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