Answer:
Substitution method can be used
Step-by-step explanation:
Given the system of equations
y = 2x-1 ....1
-12x + 3y = 9 ....2
The best method to use id the substitution method
Substitute equation 1 into 2;
From 2;
-12x + 3y = 9
-4x + y = 3
-4x + 2x-1 = 3
-2x -1 = 3
-2x = 3+1
-2X = 4
x = -4/2
x = -2
Substitute x = -2 into 1
y = 2x - 1
y = 2(-2)-1
y = -4-1
y = -5
Hence the solution to the system of equation is (-2, -5)
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Answer:
no
Step-by-step explanation:
Direct variation is of the form
y = kx
This has a constant added
y = kx+b so it is not a direct variation
Answer:
Fraction of saving = 1/8
Step-by-step explanation:
Given:
Spent on bills = 3/8
Spend on food = 2/5
Spend on entertainment = 1/10
Find:
Fraction of saving
Computation:
Fraction of saving = 1 - Spent on bills - Spend on food - Spend on entertainment
Fraction of saving = 1 - 3/8 - 2/5 - 1/10
By taking LCM
Fraction of saving = [40 - 15 - 16 - 4]/40
Fraction of saving = [5]/40
Fraction of saving = 1/8
Answer:
Undefined
Step-by-step explanation:
To simplify, find tan 90. Tan 90 isn't possible to find. Tangent is the value of Sine divided by Cosine. The sin 90 = 1. The cos 90 = 0. When you divide to find the tangent, it becomes 1 divided by 0. However, nothing can be divided by zero. The answer is undefined.
