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givi [52]
2 years ago
13

Y=8x 168 what is the y intercept and x intercept

Mathematics
1 answer:
Genrish500 [490]2 years ago
7 0
Y-intercept 168 
x-intercept  (-21)

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Two workers finished a job in 12 days. How long would it take each worker to do the job by himself if one of the workers needs 1
Lorico [155]

Two workers finished a job in 7.5 days.

How long would it take each worker to do the job by himself if one of the workers needs 8 more days to finish the job than the other worker?

let t = time required by one worker to complete the job alone

then

(t+8) = time required by the other worker (shirker)

let the completed job = 1

A typical shared work equation

7.5%2Ft + 7.5%2F%28%28t%2B8%29%29 = 1

multiply by t(t+8), cancel the denominators, and you have

7.5(t+8) + 7.5t = t(t+8)

7.5t + 60 + 7.5t = t^2 + 8t

15t + 60 = t^2 + 8t

form a quadratic equation on the right

0 = t^2 + 8t - 15t - 60

t^2 - 7t - 60 = 0

Factor easily to

(t-12) (t+5) = 0

the positive solution is all we want here

t = 12 days, the first guy working alone

then

the shirker would struggle thru the job in 20 days.

8 0
2 years ago
Read 2 more answers
The functions q and r are defined as follows.
Harrizon [31]
G(2)= -2-2
g(2)= -4

r(g(2))= r(-4)
r(-4)= 2(-4)^2 -1
r(-4)= 31
ANSWER=31
5 0
2 years ago
30 points please I really need help
alexandr402 [8]

Answer :

$38 + $2(n) where n is the no. of cars.

Step-by-step explanation:

He earns $38 daily which is fixed and additional $2 wage depends on the no. of cars which means no. of cars will determine how many $2's he earns.

25 cars = $38 + $2 (25) = $88

30 cars = $38 + $2 (30) = $98

35 cars = $38 + $2 (35) = $108

40 cars = $38 + $2 (40) = $118

8 0
2 years ago
I need help please and thank you
balandron [24]

Answer:

Step-by-step explanation:

the correct answer is 3

3 0
3 years ago
Write the number 63 in four different ways
barxatty [35]
60+3+ sixty-three 63 and 6.3
7 0
2 years ago
Read 2 more answers
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