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Deffense [45]
3 years ago
6

4 ounces of Doritos for $1.20 or 16 ounces of potato chips for $4.40

Mathematics
1 answer:
just olya [345]3 years ago
3 0
16 ounces for $4.40 is a better deal by .025
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3x + 4y = 27 5x - 3y = 16
Arturiano [62]

Answer:

x = 5 , y = 3

Step-by-step explanation:

Solve the following system:

{3 x + 4 y = 27 | (equation 1)

5 x - 3 y = 16 | (equation 2)

Swap equation 1 with equation 2:

{5 x - 3 y = 16 | (equation 1)

3 x + 4 y = 27 | (equation 2)

Subtract 3/5 × (equation 1) from equation 2:

{5 x - 3 y = 16 | (equation 1)

0 x+(29 y)/5 = 87/5 | (equation 2)

Multiply equation 2 by 5/29:

{5 x - 3 y = 16 | (equation 1)

0 x+y = 3 | (equation 2)

Add 3 × (equation 2) to equation 1:

{5 x+0 y = 25 | (equation 1)

0 x+y = 3 | (equation 2)

Divide equation 1 by 5:

{x+0 y = 5 | (equation 1)

0 x+y = 3 | (equation 2)

Collect results:

Answer:  {x = 5 , y = 3

4 0
3 years ago
Write a recursive definition for the sequence 14, 10, 6, 2...
VladimirAG [237]
The general form of recursive definition for arithmetic sequence:
a_{n}=a_{1}+d(n-1)

So, what we need to do is to find a_{1} and d.
a_{1}=14
d=a_{2}-a_{1}=10-14=-4
Having found these two values we can now define our recursive sequence:
a_{n}=14-4(n-1)
a_{n}=14-4n+4
a_{n}=18-4n
7 0
3 years ago
Read 2 more answers
A bag contains an equal number of blue, green, pink, and red balls. If a ball is chosen at random 200 times, with replacement,
jeyben [28]

Answer: 25%

Step-by-step explanation:

4 0
3 years ago
Christina biked 36 miles 6 in hours if she biked at the constant speed how many miles did she ride in 1 hour
Nesterboy [21]

find unit rate:

36 / 6 = 6

she can ride 6 miles in 1 hour

5 0
3 years ago
Read 2 more answers
I need to solve×:5×10=2
PSYCHO15rus [73]
I hope this helps you

6 0
3 years ago
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