Answer:
x = -13, y = -3
Step-by-step explanation:
let a number = x; the other = y
x = 3y - 4
x + y = -16
Isolate the y in the second equation. Subtract x from both sides
x (-x) + y = -16 (-x)
y = -16 - x
Plug in -16 - x for y
x = 3(-16 - x) - 4
Simplify. Distribute 3 to all terms within the parenthesis
x = -3x - 48 - 4
x = -3x - 52
Isolate the x. Add 3x to both sides
x (+3x) = -3x (+3x) - 52
4x = -52
Divide 4 from both sides
(4x)/4 = (-52)/4
x = -52/4
x = -13
Plug in -13 for x in one of the equations:
x + y = -16
(-13) + y = -16
Isolate the x. Add 13 to both sides
y - 13 (+13) = -16 (+13)
y = -16 + 13
y = -3
Answers: x = -13, y = -3
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Answer:
It will take 280minutes to inspect 196 hard drives
Step-by-step explanation:
If. 28hd=40min
Then. 196hd=x. cross multiply
28hdx=7840hdmin
x=280minutes
The probability that has a basic model purchase extended warranty will be 0.1935 or 19.35%.
<h3>What is probability?</h3>
Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.
A company that manufactures video cameras produces a basic model and a deluxe model.
Over the past year, 45% of the cameras sold have been of the basic model.
Of those buying the basic model, 43% purchase an extended warranty, whereas 50% of all deluxe purchasers do so.
If you learn that a randomly selected purchaser has an extended warranty.
Then the probability that has a basic model purchase extended warranty will be
P = 0.45 × 0.43
P = 0.1935
P = 19.35%
More about the probability link is given below.
brainly.com/question/795909
#SPJ1
Answer is (B)
Explanation:
M<2=180-53x2
=74
M<2=5x+14=74
5x=60
X=12
Step-by-step explanation:
so, just by getting into the taxi we have to pay R10.
that leaves us 22 - 10 = R12 for the actual trip.
30 cents per kilometer.
so, how many units of 30 cents are there in R12 ? that is the number of kilometers we can go.
R12 = 1200 cent (right ?)
1200 / 30 = 120 / 3 = 40
so, we can travel 40 kilometers for that money.
