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Stella [2.4K]
3 years ago
12

A.(7,8) B.(2,22) C.(2,8) D.(3,29)

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
6 0
To solve this system using the subst. method, equate y = 7x + 8 to y = x + 20.

Then 6x = 12, and x = 2.  To find y, subst. 2 for x in either of the given equations.  

Write your solution as (2, y).
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Ali bought a music system for rs 6375.00 and spent rs 75.00 on transportation . He sold it for 6400.00 . Find his profit or loss
pentagon [3]

Answer: Loss percent = 0.775%

Step-by-step explanation:

Here,

Total cost = Purchasing price + transportation

⇒ Total cost = 6375 + 75

⇒ Total cost = $ 6450

Selling price = $ 6400

Total cost > Selling price, hence it is a loss.

Loss percent formula :

Loss\% =\dfrac{\text{Loss}}{Total\ cost}\times100\\\\=\dfrac{Total\ cost - Selling price}{Total \ cost}\times100\\\\=\dfrac{6450-6400}{6450}\times100\\\\=\dfrac{50}{6450}\times100=0.775\%

Hence, Loss percent = 0.775%

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3 years ago
How did the musician keep his sousaphone clean?
Sedbober [7]
  the answer  in the attached figure

8 0
3 years ago
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Pls help me, its not hard
natulia [17]

Answer:

1. y = -x + 3

2. y = x - 3

3. y = 3x + 1

4. y = -3x - 3

Step-by-step explanation:

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3 years ago
What is 15+9+20+22+9 then x 5?
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Step-by-step explanation:

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A) what is the slope of the parallel to y=2x+3
tekilochka [14]

Answer:

a) 2 b) -1/2

Step-by-step explanation:

a) im pretty sure the question only asks for the slope of the parallel line y=2x+3, that that would be 2 because they have the same slope

b) the question is phrased weird, but im assuming it wants the same thing from a, (the slope) and the slope of a perpendicular like is always the opposite reciprocal of the original number

for example in y=2x+3:

2 is the original slope

meaning that the perpendicular would be -1/2

<em>the</em><em> </em><em>images</em><em> </em><em>above</em><em> </em><em>are</em><em> </em><em>just</em><em> </em><em>examples</em><em> </em><em>and</em><em> </em><em>are</em><em> </em><em>not</em><em> </em><em>related</em><em> </em><em>to</em><em> </em><em>the</em><em> </em><em>answer</em>

6 0
3 years ago
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