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kipiarov [429]
3 years ago
8

Solve by substitution3x - 3y = -6 z=-3x-3y+9 -4x+5y+z=8

Mathematics
1 answer:
Vanyuwa [196]3 years ago
4 0
1. Y= x+2
2. Y=Y
3. E^2 Al^3 ^2 anumbs
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The cost in dollars, y, to participate x days in a bike tour is a linear function. Lin's bike tour is described by the equation
boyakko [2]

Answer:

They cost the same amount

Step-by-step explanation:

Given

Lin: y = 5x +50 where x = 14

Max: \$120 for 14 days

Required

Which is less expensive?

Max charges has been given from the question as; $120 for 14 days.

To determine Lin's, we simply substitute 14 for x in y = 5x +50

y = 5  * 14 + 50

y = 70 + 50

y =120

The above result of y shows that Max charges for 14 days is also $120.

<em>Hence, they (Lin and Max) cost the same because they both equal to $120 for 14 days</em>

6 0
3 years ago
What is 279* 508 show your work
In-s [12.5K]

Answer:

141732

Step-by-step explanation:

  2 7 9

× 5 0 8  

------------------------

            2     6 7

    2      2     3 2

 1  3      4  

 1  3      9    5 00

--------------------------------

     1    

1    4   1 7 3 2

its rlly hard to line up numbers on a computer.. hope u still understand it

5 0
3 years ago
.0000458 put this in scientific notation
amm1812


4.58 x 10^-5



hope I helped
3 0
3 years ago
If AB=50, what are AC and CB?
KiRa [710]
X=6
AC= 14
CB= 36
hope this helps!!
6 0
3 years ago
A regular octagonal pyramid. Each side of the base is 6 cm long. it has a height of 10cm. Find the surface area of the pyramid​
attashe74 [19]

9514 1404 393

Answer:

  470.16 cm²

Step-by-step explanation:

The apothem of the base is used for two purposes: to find the area of the base, and to find the slant height of each face.

The apothem of the base for side length s is ...

  s/2 = a·tan(π/8)

  a = s/(2·tan(π/8)) ≈ 7.24 cm

The slant height of a triangular face is found using the Pythagorean theorem. The apothem of the base and the height are legs of the right triangle whose hypotenuse is the slant height. For slant height x, we have ...

  x² = 10² + a² = 100 +52.46

  x ≈ √152.46 ≈ 12.35

__

The area of the 8 triangular faces will be ...

  A = 1/2Px . . . . where P is the perimeter of the pyramid

The area of the base will be ...

  A = 1/2Pa

So, the total surface area is ...

  A = 1/2P(a + x) = (1/2)(8)(6 cm)(7.24 +12.35 cm) ≈ 470.16 cm²

8 0
3 years ago
Read 2 more answers
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