Y = 5x - 1...so we sub 5x - 1 in for y in the other equation
-15x - 3y = 3
-15x - 3(5x - 1) = 3
-15x - 15x + 3 = 3
-30x = 3 - 3
-30x = 0
x = 0
y = 5x - 1
y = 5(0) - 1
y = -1
it has one solution (0,-1) <=
Answer: the answer is 24 CO3 0
Step-by-step explanation:
Answer:
Q1:
Share of the daughter (x):
2x + x + x + $1,000 = $9,000
4x = $8,000
x = $2,000
Share of the wife:
= 2($2,000)
= $4,000
Share of the son:
= $2,000 + $1,000
= $3,000
Answer: wife, $4,000; son, $3,000; daughter, $2,000
Q2:
= 1/2x + $1,000
Answer: 1/2x + $1,000: expression for share of the son
Proof (the wife shares $4,000):
Share of wife (x):
x + 1/2x + 1/2x + $1,000 = $9,000
2x = $8,000
x = $4,000
Step-by-step explanation:
hope it helps!
Answer:
<em>2</em><em> students failed in the final exam.</em>
Step-by-step explanation:
The scores on a final exam were approximately normally distributed.
We know that,
X = raw score = 60
μ = mean = 82
σ = standard deviation = 11
Putting the values,
From Normal distribution table, we get
Hence, 2.27% of 85 students failed the final exam.
So the number of students who failed the exam is,