The answer is the first one, because when you expand it you get -1/4 × 1, which equals -1/4, and -1/4 × -2y, which equals 1/2y. These are the same terms in the given expression -(1/2 + 1/4). I hope this helps!
Answer:
rational numbers and real numbers
Step-by-step explanation:
<h2>please mark me brainliest</h2>
Given:
Sprayer and generator
1st Job: 6 hours each for a total of $90
2nd Job: 4 hours sprayer and 8 hours generator for a total of $100
Let x = spayer ; y = generator
6x + 6y = 90
4x + 8y = 100
6x = 90 - 6y
x = 90/6 - 6y/6
x = 15 - y
4x + 8y = 100
4(15-y) + 8y = 100
60 - 4y + 8y = 100
4y = 100 - 60
4y = 40
y = 40/4
y = 10
x = 15 - y
x = 15 - 10
x = 5
Sprayer = 5 per hour ; generator = 10 per hour
To check:
6x + 6y = 90
6(5) + 6(10) = 90
30 + 60 = 90
90 = 90
<span>4x + 8y = 100
</span>4(5) + 8(10) = 100
20 + 80 = 100
100 = 100
Answer: See explanation
Step-by-step explanation:
Population- Every student...
Sample- 10 students sitting together at a table in the cafeteria
Random Sample- 10 Students whose names...
Answer:
$80
Step-by-step explanation:
100%-30%=70%(nightstand after discount)
70%=$56
1%=56÷70=0.80
100%=0.8x100=80
Hope this helps! Thanks.
