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MatroZZZ [7]
3 years ago
6

PLS HELP URGENT

Mathematics
2 answers:
timama [110]3 years ago
8 0

9514 1404 393

Answer:

  11 cm

Step-by-step explanation:

The law of cosines can be helpful here. In order to find PQ, we must know the cosine of the angle R. Fortunately, SOH CAH TOA reminds us it is ...

  Cos = Adjacent/Hypotenuse

  cos(R) = 10/14 = 5/7

__

The law of cosines gives us the relation ...

  PQ^2 = PR^2 +QR^2 -2·PR·QR·cos(R)

  PQ^2 = 15^2 +14^2 -2(15)(14)(5/7) = 121

  PQ = √121 = 11

The length of PQ is 11 cm.

_____

<em>Alternate solution</em>

This can be solved using the Pythagorean theorem twice.

  QS^2 = QR^2 -SR^2 = 14^2 -10^2 = 96

  PQ^2 = PS^2 +QS^2 = 5^2 +96 = 121

  PQ = √121 = 11

Oksana_A [137]3 years ago
5 0

PQ=11

PS^2+SR^2=QR^2

PS^2+PS^2=PQ^2

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A store plans to sell two different game consoles, the YuuMi and the ZBox. The store’s wholesale cost for a YuuMi is $250, and t
strojnjashka [21]

9514 1404 393

Answer:

  • Constraints: x + y ≤ 250; 250x +400y ≤ 70000; x ≥ 0; y ≥ 0
  • Objective formula: p = 45x +50y
  • 200 YuuMi and 50 ZBox should be stocked
  • maximum profit is $11,500

Step-by-step explanation:

Let x and y represent the numbers of YuuMi and ZBox consoles, respectively. The inventory cost must be at most 70,000, so that constraint is ...

  250x +400y ≤ 70000

The number sold will be at most 250 units, so that constraint is ...

  x + y ≤ 250

Additionally, we require x ≥ 0 and y ≥ 0.

__

A profit of 295-250 = 45 is made on each YuuMi, and a profit of 450-400 = 50 is made on each ZBox. So, if we want to maximize profit, our objective function is ...

  profit = 45x +50y

__

A graph is shown in the attachment. The vertex of the feasible region that maximizes profit is (x, y) = (200, 50).

200 YuuMi and 50 ZBox consoles should be stocked to maximize profit. The maximum monthly profit is $11,500.

4 0
3 years ago
What degree would be classified as an obtuse angle but is close to being a straight line
Liono4ka [1.6K]

Answer: 171

Step-by-step explanation:

An obtuse angle means more than 90 degrees. (90 degrees would be the inside corner of your notebook paper) a straight line would be 180 degrees. 171 is the closest to 180

6 0
3 years ago
Write the following using index notation:<br> C) 4 x 4 x 4 x 5 x 5
Alchen [17]

Answer:

4 whole cube × 5 whole square

Step-by-step explanation:

Hope the answer above helps you...

6 0
3 years ago
Select the correct answer.
barxatty [35]

Answer:

-8

Step-by-step explanation:

-3x+7x-8=34+9x-2

we move the x's to the left and the numbers to the right

4x-9x=32+8

-5x=40

x=-40/5

x=-8

4 0
3 years ago
Given the function ƒ(x) = 5x2 − 9x + 18, find ƒ(3).
Crank

Answer:

f(3) = 36

Step-by-step explanation:

ƒ(x) = 5x^2 − 9x + 18

Let x =3

ƒ(3) = 5(3)^2 − 9(3) + 18

      = 5*9 -27 +18

      = 45 -27+18

      =36

6 0
4 years ago
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