3 years ago

2) Caculate the unit rate. Paying $28 for 8 pounds of pears. What is the cost per pound of pears?

Mathematics

2 answers:

jeyben [28]3 years ago

5 0

Answer:

28/8=3.50

Step-by-step explanation:3.50 per pear.

I am Lyosha [343]3 years ago

4 0

Answer:

3.5

Step-by-step explanation:

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What are the coordinates (x, y) at which the graphs of 3.6x − 2y = 6 and −2.7x + y = 3 intersect? Round to the nearest tenth if

Bas_tet [7]

3.6x - 2y = 6
-2.7x + y = 3.....multiply by 2
----------------
3.6x - 2y = 6
-5.4x + 2y = 6 (result of multiplying by 2)
----------------add
-1.8x = 12
x = 12/-1.8
x = - 6.67 (or -20/3)

3.6x - 2y = 6
3.6(-6.67) - 2y = 6
-24.01 - 2y = 6
-24.01 - 6 = 2y
-30.01 = 2y
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solution : (-6.67, -15)

6 0

3 years ago

The 50th term of an arithmetic sequence is 86 and the common difference is 2. Find the first three terms of the sequence.

Nesterboy [21]

$a_n=a_{n-1}+d=a_{n-2}+2d=\cdots=a_1+(n-1)d$

which means

$a_{50}=86=a_1+49\times2\implies a_1=-12$

which in turn means the next two terms are $a_2=-10$ and $a_3=-8$ .