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chubhunter [2.5K]
2 years ago
12

Which is the better buy? 2 liters of milk at 3.80 OR 1.5 liters of milk at 2.70? Justify the answer!

Mathematics
1 answer:
valentinak56 [21]2 years ago
7 0

Answer:

1.5 litres for 2.70

Step-by-step explanation:

If you'e buying the 2l one they are gonna charge you 1.20 more just for 0.5l, and 0.5l should actually cost 0.95, so they are practically ripping you off if you buy the 2l

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Solve the system.
liraira [26]

Answer:

Option D is right,.

Step-by-step explanation:

-a+4b+2c=-8   ... i

3a+b-4c=9      ... ii

b=-1                 ... iii

Substitute the value of b, in i and ii

-a-4+2c =-8 or -a+2c = -4

and 3a-1-4c = 9 or 3a -4c =8

Now we have two equations in two variables

-a+2c =-4 and 3a-4c =8

a = 2c+4:  substitute this in the other equatin.

3(2c+4)-4c =8 Or 2c +12 =8

2c =-4 or c = -2

Substitute in -a+2c =12

-a-2 = -4

a = -2+4 =2

a=2, b=-1 and c =-1 is the solution.


6 0
3 years ago
Help me please 98 math
luda_lava [24]

Answer:

the least common denominator would have to be 77

Step-by-step explanation:

because the product of 11 and 7 equals 77 but there is nothing less than that that can actually be a COMMON denominator

for example: 7 can be multiplied by numbers to get these out comes //

7,14,21,28,35,42,49,56,63,70,77 and 77 is the only one that 11 can actually equal to that is common with 7

5 0
3 years ago
Given p : q = 5 : 2 and q : r = 4 : 3, find the ratio of p : q : r​
yaroslaw [1]

Answer:

p : q : r = 10 : 4 : 3

Step-by-step explanation:

Expressing the ratio in fractional form

\frac{q}{r} = \frac{4}{3} ( cross- multiply )

4r = 3q ( divide both sides by 4 )

r = \frac{3}{4} q = \frac{3}{4} × 2 = \frac{3}{2}

Then

p : q : r

= 5 : 2 : \frac{3}{2} ( multiply all parts by 2 )

= 10 : 4 : 3

7 0
3 years ago
Read 2 more answers
If you put 700 into a savings account that's earns 1% interest compound monthly how much will you have in 5 years
miss Akunina [59]

Answer:

In 5 years I will have $ 1,151.71.

Step-by-step explanation:

To determine, if I put 700 into a savings account that's earns 1% interest compound monthly, how much will I have in 5 years, the following calculation must be performed:

700 x (1 + 0.01 / 12) ^ 12x5 = X

700 x (1 + 0.008333) ^ 60 = X

700 x 1.64530 = X

1,151.71 = X

Therefore, in 5 years I will have $ 1,151.71.

3 0
2 years ago
If Sam has 5 cookies and the Cookie Monster takes 1 how many are left?
lubasha [3.4K]

Answer:

4

Step-by-step explanation:

If you have 5 cookies on a number line one less than 5 is 4 so that would be your answer

8 0
2 years ago
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