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bixtya [17]
2 years ago
15

CLASS PROJECT An economics class formed a company to sell school supplies. They would like to sell at least 20 notebooks and 50

pens per week, with a goal of earning at least $60 per week. a. Define the variables, and write a system of inequalities to represent this situation. b. Graph the system. c. Name one possible solution.​
Mathematics
1 answer:
lesya692 [45]2 years ago
8 0

Answer:

60≥20x+50y

Step-by-step explanation:

Let x = notebooks and y = pens (all per week)

One solution would be x ≥ 1 and y ≥ 1 as at least one per each item per week

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Find the sum
lakkis [162]

Answer:

Numerator = 2(b^2+a^2)    or equivalently 2b^2+2a^2

Denominator = (b+a)^2*(b-a), or equivalently b^3+ab^2-a^2b0-a^3

Step-by-step explanation:

Let

S = 2b/(b+a)^2 + 2a/(b^2-a^2)   factor denominator

= 2b/(b+a)^2 + 2a/((b+a)(b-a))     factor denominators

= 1/(b+a) ( 2b/(b+a) + 2a/(b-a))    find common denominator

= 1/(b+a) ((2b*(b-a) + 2a*(b+a))/((b+a)(b-a))   expand

= 1/(b+a)(2b^2-2ab+2ab+2a^2)/((b+a)(b-a))  simplify & factor

= 2/(b+a)(b^2+a^2)/((b+a)(b-a))  simplify & rearrange

= 2(b^2+a^2)/((b+a)^2(b-a))

Numerator = 2(b^2+a^2)    or equivalently 2b^2+2a^2

Denominator = (b+a)^2*(b-a), or equivalently b^3+ab^2-a^2b0-a^3

4 0
3 years ago
Please help what does x=?
mario62 [17]

Answer: I think 13

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Fluffy, Spot and Skampy have a combined age in dog years of 91. Spot is 14 years younger than Fluffy. Skampy is 6 years older th
WITCHER [35]

Answer: fluffy = 33yrs

Spot = 19 yrs

Skampy = 39 yrs

Step-by-step explanation:

Let fluffy = x

Spot = y

Skampy =z

x + y + z = 91 -------1

x -14 =y ------2

z = x + 6 --------3

Put eqn 2 and 3 in eqn 1

x + x - 14 + x + 6 = 91

3x = 99

x = 33

y = 33-14= 19

z = 33+6 = 39

8 0
3 years ago
Emma has saved £1.35 in 5p coins. How many 5p coins does Emma have?
valentinak56 [21]
To make calculation easier, we first multiply
1.35 × 100 = 135

then we need to find how many groups of 5 are there in 135.
to do so, we simply take 
135 ÷ 5 = 27

therefore, the answer is <u>27.</u>
8 0
3 years ago
Pls help ASAP im in a test​
atroni [7]

12 divided by 24 = 0.5

8 0
3 years ago
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