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7nadin3 [17]
2 years ago
12

Solve the system of equations by elimination.

Mathematics
2 answers:
n200080 [17]2 years ago
4 0

Answer:

Step-by-step explanation:

1. 2x - 9y = 23

2 x = 9 y + 23

y = (2 x)/9 - 23/9

2 x - 9 y - 23 = 0

2. 5x - 3y = -1

5 x + 1 = 3 y

y = (5 x)/3 + 1/3

5 x - 3 y + 1 = 0

I belive that should help you out a bit :D

In-s [12.5K]2 years ago
4 0

Answer:

(x,y) = (-1/5 + 3v/5, -13/5+2v/15)

Step-by-step explanation:

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Which equation shows that the Pythagorean identity is true for 0 = 180 degrees? select the equation that is in the form sin^2 0+
elixir [45]

The equation in the form of the given expression is (0)² + (1)² = 1

<h3>Trigonometry identity</h3>

According to some of the trigonometry identity

sin 0 = 0

cos 0 1

Given the expression below

sin^2 0+cos^2 0=1

This can also be expressed as:

(sin0)² + (cos0)² = 1

Substitute

(0)² + (1)² = 1

Hence the equation in the form of the given expression is (0)² + (1)² = 1

Learn more on trig identity here: brainly.com/question/20094605

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8 0
2 years ago
Complete each statement from the information given and state the reasons and the triangle criterion you used
kupik [55]

Answer:

Triangle RED ≈ Triangle BUL

By-

SAS Congruencey

Beacause-

RE = BU (S)

ang RDE = ang BLU (A)

RD = BL (S)

(All the info for the relationship is given in the diagram itself)

Thus it's SAS Congruencey

8 0
3 years ago
5•7/8= multiply then reduce the answer to lowest terms
swat32
The answer is 35/8. 5*7 is 35 and 35/8 cannot be reduced more
6 0
3 years ago
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Ok so this is a question Im too dum to answer, please help :(
Margaret [11]

Answer:

6z^3 + 4z^2 + 5

Step-by-step explanation:

Combine like terms from each side of the expression.

(4z^3 + 2z^3) + (3z^2 + z^2) + (8 - 3)

6z^3 + 4z^2 + 5

5 0
2 years ago
What is the value of x in the equation, 70 = 12 + 9x – 2(x + 6)
lesantik [10]
<h3>Solution :-</h3>

➩ 70 = 12 + 9x - 2 ( x + 6 )

➩ 70 = 12 + 9x - 2x - 12

➩ 70 = 0 + 7x

➩ 70 = 7x

Here we can use 2 methods

Methods :-

  1. Trial and error method :- By adding,subtracting , multiplying or dividing the same variable or constant on LHS & RHS
  2. Transposing :- by transposing a term from LHS to RHS or RHS to LHS

• Trial and error

By dividing with 7 on both sides

➩ 70/7 = 7x/7

➩ x = 10

• Transposing

By transposing 7 from RHS. to LHS

➩ 70/7 = x

➩ x = 10

Hence , x = 10

6 0
2 years ago
Read 2 more answers
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