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sergeinik [125]
3 years ago
13

What is the sum? 2/5 + 7/15

Mathematics
1 answer:
sashaice [31]3 years ago
8 0

Answer:

13/15

Step-by-step explanation:

You need to make the denominators of both equations the same

to do this multiply the numerator and denominator of the fraction 2/5 by 3

this gives you 6/15

add the numerators together and keep the denominators the same

your answer is 13/15

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elixir [45]

Answer:2.6363 so if you estimate it it is 2.64

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F) 16 - p = 12 <br> g) 18 - 2p = 6<br> h)p2+ 4 = 9 <br> i)p4- 3 = 1<br> **MUST SHOW YOUR WORK**
mestny [16]
f) 16 - p = 12 minus 12
4 - p = 0 plus p
p = 4
g) 18 - 2p = 6 divide by -2
-9 + p = -3 plus 9
p = 6
h) p x 2 + 4 = 9 divided by 2
p + 2 = 4.5 minus 2
p = 2.5
i) p x 4 - 3 = 1 plus 3
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3 0
3 years ago
Marvin is comparing two different music websites. Website A charges $10 per month for a subscription and $0.25 per song. Website
Alecsey [184]
Website A:
c = 10 + 0.25 s 
where c is the cost and s is the number of songs.
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The equation ( answer ):
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We can solve this equation:
10 = 0.5 s
s = 10 : 0.5
s = 20 ( Marvin would have to buy 20 songs to to make the costs equal )
5 0
3 years ago
Lisa paid 45.30 for 15.9 gallons of gasoline.what was the cost per gallon, rounded to the nearest hundreath
dimulka [17.4K]

Answer:

$2.85

Step-by-step explanation:

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rounded up to the nearest hundreth would be $2.85.

6 0
3 years ago
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7 line tshirt company manufactures t-shirts and sells them online.The company has a model where the cost C, in dollars to make x
bonufazy [111]

Answer:

The company must sell at least 2 shirts to break even.

Step-by-step explanation:

Cost:

The cost is given by the following equation:

C = \frac{40}{30x+20} + 20 = \frac{4x}{3} + 20

Revenue:

The revenue is given by the following equation:

R = 15x

How many t shirts must the company sell to break even?

Breakeven point is when the revenue is the same as the costs. So

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15x - \frac{4x}{3} = 20

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Multiplying everything by 3

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x = \frac{60}{41} = 1,...

Since you cant make a decimal value of shirts

The company must sell at least 2 shirts to break even.

[

7 0
3 years ago
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