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ehidna [41]
3 years ago
8

Use a graphing calculator to determine the solution of 1-2x - y = 2 13x + 2y=1

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
6 0
The first one is 2x+y=-1

the second one is 13x+2y-1=0
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Y=5x+3 which orderd pair works for the rule<br><br> A. (4,23)<br><br> B. (3,14)<br><br> C. (5,3)
gtnhenbr [62]
Y = 5x + 3
when x = 4
y = 5(4) + 3 = 23

Answer (4,23) 
4 0
3 years ago
The marginal price per pound (in dollars) at which a coffee store is willing to supply x pounds of Jamaican Blue Mountain coffee
il63 [147K]

Answer:

Thus, the coffee shop is willing to supply 6 pounds per week at a price of $4 per pound.

Step-by-step explanation:

We are given the following information in the question:

The marginal price per pound (in dollars) is given by:

p'(x) = \displaystyle\frac{208}{(x+7)^2}

where x is the supply in pounds.

P(x) = \displaystyle\int p'(x)~dx =\displaystyle\int\displaystyle\frac{208}{(x+7)^2}~dx\\\\P(x) = \frac{-208}{(x+7)} + c\\\\\text{where c is the constant of integration.}

The coffee shop is willing to supply 9 pounds per week at a price of $7 per pound.

Thus, we are given that

P(9) = 7

Putting the values, we get,

P(x) = \displaystyle\frac{-208}{(x+7)} + c\\\\P(9) = 7\\\\\displaystyle\frac{-208}{(9+7)} + c = 7\\\\c = 7 + \frac{208}{16} = 20

P(x) = \displaystyle\frac{-208}{(x+7)} + 20

Now, we have to find how many pounds it would be willing to supply at a price of $4 per pound.

P(x) = 4

P(x) = \displaystyle\frac{-208}{(x+7)} + 20 = 4\\\\\frac{-208}{x+7} = -16\\\\x + 7 = 13\\x = 6

Thus, the coffee shop is willing to supply 6 pounds per week at a price of $4 per pound.

3 0
3 years ago
Denise has a stool with a circle seat on top. The diameter of the seat is 14inches, and she wants to know the area of the top in
saul85 [17]

Answer:21?

Step-by-step explanation:

7 0
3 years ago
Show that: (p¼- q¼)(p¼ + q¼)(√P+√q)= p-q.​
Irina18 [472]

Answer:

Step-by-step explanation:

let p¼ = a, q¼ = b

L.H.S. = (a - b)(a + b)(a² + b²) = (a² - b²)(a² + b²) = (a²)² - (b²)² = p - q = R.H.S.

3 0
2 years ago
Read 2 more answers
Kara works at a fine jewelry store and earns commission on her total sales for the week. Her weekly paycheck was in the week tot
GrogVix [38]

Answer:

12.2%

Step-by-step explanation:

Her total paycheck minus her salary = the commission amount

So

6500 - 1000 = 5500

So....her commission as a percentage of sales  = 5500/ 45000 = about 12.2%

3 0
3 years ago
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