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-Dominant- [34]
3 years ago
5

The supermarket has 30 aisles. 10% of the aisles are empty, without any shoppers. ​How many empty aisles are there in the superm

arket?
​​
Mathematics
1 answer:
lina2011 [118]3 years ago
3 0
3

10/100=x/30
Cross multiply

100x=300
Divide each side by 100

X=3
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paul bought a student discount card for the bus. the card allows him to buy daily bus passes for $1.50. after one month paul bou
anastassius [24]
D= cost of discount card
  29.50 = d + 1.50(15)
  29.50 = d + 22.50
<u>-22.50          -22.50
</u> $7.00 = d
<u /> d = $7

Paul spent $7 dollars on the discount card.

Hope this helped :D.
4 0
2 years ago
What is the equation of the line that passes
Afina-wow [57]

Answer:

Step-by-step explanation:

First, find the slope of the line for the two points.

Slope is Rise/Run.

For the two points (-8,-4) and (3,-10):

Rise (-10 - (-4)) = -6

Run (3 - ( -8)) = 11

The slope is Rise/Run or -(6/11)

The equation becomes y = -(6/11)x + b

Find b by entering either of the 2 points given.  I'll use (3,-10):

y = -(6/11)x + b

-10 = -(6/11)(3) + b

b = -10 + (6/11)(3)

b = -10 +(18/11)

b = -(110/11) + (18/11)

b = -(92/11)

The equation becomes y = -(6/11)x - (92/11)

See attached graph.

4 0
2 years ago
Math (88 points by the way)<br>I put transformation on the very first blank line by the way.
Temka [501]
This Question is actually for 44 points not 80 :(
7 0
3 years ago
Read 2 more answers
The perimeter of a rectangle must be less than 156 feet. If the length is known to be 66 feet, find the range of possible widths
balu736 [363]

x = perimeter

x<156

length = 66

so, in order to calculate perimeter you need to add two lengths and two widths

so

156 (perimeter) - 2 (66) = two widths

156 - 132 = 24 (remember this number is two widths added together)

so 24 twice the width SO 12 would be the number that the width can't be larger than

the width has to be less than 12

w < 12

5 0
3 years ago
A Web music store offers two versions of a popular song. The size of the standard version is 2.4 megabytes (MB). The size of the
Margarita [4]

Answer:

880 high-quality version

Step-by-step explanation:

I think the below is your full question:

<em>A Web music store offers two versions of a popular song. The size of the standard version is 2.1megabytes (MB). The size of the high-quality version is 4.5 MB. Yesterday, there were 1290 downloads of the song, for a total download size of 4821 MB. How many downloads of the high-quality version were there?</em>

Here is my answer:

Let x is the number of high-quality version

So the number of standard version= 1290 - x

We also know:  total download size of 4821 MB. which means:

4.5x + 2.1(1290-x) = 4821

<=> 4.5x+2709-2.1x=4821

<=> 2.4x=2112

<=> x=880

So there were 880 high-quality version

5 0
3 years ago
Read 2 more answers
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