<span>15x-3y=27
5x+4y=14
multiply (2nd) equation by (3)
15x + 12y = 42
</span>15x - 3y=27
15x + 12y = 42
-------------------substract
-15y = -15
y = 1
15x-3y=27
15x-3(1)=27
15x - 3 = 27
15x = 30
x = 2
so now you have x = 2, y =1
answer <span>D. (2,1)</span>
Answer: 75-watt are 30$ fluorescent are 30$ in the second and 65$ in the first
Step-by-step explanation: i calculated thirty 75-watt and the fluorescent and got these kinda hard to explain hope i helped:)
An expression is defined as a set of numbers, variables, and mathematical operations. The zeroes of the b(x) will be (5/4) and (-5/4).
<h3>What is an Expression?</h3>
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The solution for the expression b(x) can be written as,
b(x)=16x²-25
b(x)= (4x)² - 5²
b(x)=(4x-5)(4x+5)
The zeroes of the b(x) will be (5/4) and (-5/4).
Hence, The zeroes of the b(x) will be (5/4) and (-5/4).
Learn more about Expression:
brainly.com/question/13947055
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Her mistake is that she did the change in x over the change in y. It should be the change in y over the change in x. So: -2-3/-2-4
