Part a), solve this system of equations:
x + y = 5
x - y = 2.25
2x = 7.25
x = 3.625
y = 1.375
part b), solve this system of equations:
x + y = 5
x = 3y
y = 1.25
x = 3.75
(-5/8)(X) = -0.4
(-5/8)(X) = -4/10
X = (-4/10) / (-5/8)
X = (4/10) / (5/8)
X = (4/10)(8/5)
X = (2/5)(8/5)
X = 16/25
Letter D
The value of n such that the number n and -3/4 are additive inverses is 3/4
<h3>How to determine the value of n?</h3>
The statement is given as:
The number n and -3/4 are additive inverses
The above statement means that
n = -1 * -3/4 --- by the definition of additive inverses
Next, we evaluate the product of -1 and -3/4
n = 3/4
Hence, the value of n such that the number n and -3/4 are additive inverses is 3/4
Read more about additive inverses at
brainly.com/question/1548537
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