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lana [24]
3 years ago
10

Can you help me please with this proof ? thank you!!​

Mathematics
1 answer:
Alika [10]3 years ago
4 0

Answer:

what subject is this? or what

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At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress.
vaieri [72.5K]

Given:

The system of equations that represent the constraints for the given situation is

x+y=4.25

16.90x+4y=36.35

To find:

The solution of given system of equations.

Solution:

We have,

x+y=4.25           ...(i)

16.90x+4y=36.35           ...(ii)

Multiply equation (i) by 4.

4x+4y=17           ...(iii)

Subtracting (iii) from (ii), we get

16.90x+4y-(4x+4y)=36.35-17

16.90x+4y-4x-4y=19.35

12.90x=19.35

Divide both sides by 12.90.

x=\dfrac{19.35}{12.90}

x=1.5

Put this value in (i).

1.5+y=4.25

y=4.25-1.5

y=2.75

The solution of system of equations is x=1.5 and y=2.75. It means, the yards of silk are 1.5 and yards of cotton are 2.75.

5 0
3 years ago
Jennifer's saving to buy a bike. The bike costs $245. She has $125 saved, and each week she adds $15 to her savings. How long wi
Novosadov [1.4K]
It will take her 8 weeks to save up enough money for the bike.

To get the answer first you have to subtract 125 from 245 to see how much money she still has to save then divide the answer which is 120 by 15 and you get 8. Hope this helps!!
4 0
3 years ago
Read 2 more answers
Easton has a 36 ounce milk. He drinks 26 ounces. Enter the percentage of ounces Easton has left of his milk. Round your answer t
Sunny_sXe [5.5K]

Answer:

Percentage left of the milk: 22.22%

8 0
3 years ago
I need number 1 please and thank you
belka [17]

Answer:

It is the third one because of formula I² + 2I*II + II²

In your case I = 4x and II = 3

4 0
3 years ago
What is 2 plus 2 plus 2 divided by 3
agasfer [191]
2 plus 2 plus 2 = 6 divid it By 3 which equals 2
6 0
3 years ago
Read 2 more answers
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