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andre [41]
3 years ago
11

Solve the following system by the substitution method 0.1x + 0.8y = - 5.1 , 0.4x- 0.9y = 8.3

Mathematics
1 answer:
Sav [38]3 years ago
6 0
I hope you can read cursive! And I hope this helps! (:

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THIS IS FOR 19 POINTS!!!
zepelin [54]
1).  To multiply with like bases, add the exponents ===>  5² x 5⁵ = 5⁷

2).  Same rule.  e² x e⁷ = e⁹

3).  Same rule, but make sure to start with like bases.

2a⁵ x 6a = (2 x 6) (a⁵ x a¹) = 12 a⁶

4).  Same rule, but make sure to start with like bases.

4x² (-5)x⁶ = (4) (-5) (x² x⁶) = -20x⁸

5).  To divide with like bases, subtract the denominator (divisor) exponent
from the numerator (dividend) exponent. ===> 7⁹ / 7³ = 7⁶

6).  Same rule.    v¹⁴ / v⁶ = v⁸

7).  Same rule, but make sure to start with like bases.

15w⁷ / 5w² = (15/5) (w⁷/w²) = 3 w⁵

8).  Same rule, but make sure to start with like bases.

10 m⁸ / 2m = (10/2) (m⁸ / m¹) = 5m⁷

9).  Same rules.  Add exponents to multiply, subtract them to divide.

( 2⁵ x 3⁷ x 4³ ) / (2¹ x 3⁵ x 4) = (2⁵ / 2¹) x (3⁷ / 3⁵) x (4³ / 4¹) = 2⁴ x 3² x 4²

10).  (4¹⁵) x (-5)⁶ / (4¹² x (-5)⁴ ) = (4¹⁵/4¹²) x [ (-5)⁶/(-5)⁴ ] = 4³ x (-5)² = 4³ x 5²

11).  (6⁷ x 7⁶ x 8⁵) / (6⁵ x 7⁵ x 8⁴) = (6⁷ / 6⁵) x (7⁶ / 7⁵) x (8⁵ / 8⁴)
       You can finish it from here, you Crazy Unicorn you.

12).  [ (-3)⁶ x 10⁵ ] / [ (-3)⁴ x 10³ ]   =  [ (-3)⁶ / (-3)⁴ ] x (10⁵/10³)  
        The last step is yours.  Take it !
4 0
3 years ago
A hexagonal prism has a base with an area of 15 square inches and the volume is 105 cubic inches.
Lina20 [59]

Answer:

The height is 7 inches

Step-by-step explanation:

Given

Base\ Area = 15in^2

Volume = 105in^3

Required

Determine the height [missing from the question]

The volume of a hexagonal prism is:

Volume =  Base\ Area * Height

Make Height the subject

Height = \frac{Volume}{Base\ Area}

Height = \frac{105in^3}{15in^2}

Height = \frac{105in}{15}

Height = 7in

4 0
3 years ago
Can you write to me explaining this please
Mnenie [13.5K]

Answer:

In addition, from the response shown, using a graphical calculator brings the following benefits:

1) You can write the system of linear equations as big as you want. This is: systems 3 * 3, 4 * 4, 5 * 5.

2) The response to systems of equations greater than 2 * 2 can be complicated when you graph the solution, therefore, the graphing calculator can be much more efficient in these cases.

3) You can write the linear equations in any way. Resolving by hand you should probably rewrite the system of equations to find the solution.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Planning for the possibility that the plumbing in your house needs repair is part of a plan for
spayn [35]

Answer:

prepare for unexpected bills or emergency repairs

Step-by-step explanation:

5 0
3 years ago
Piece of rope that is 15 ft long what is the area
amm1812
The question is not exhaustive.
8 0
3 years ago
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