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lina2011 [118]
2 years ago
5

At 7:00 AM there were 14,000 gallons of water in Lance’s pool when he noticed there was a leak. After 6 hours there were only 5,

000 gallons of water remaining in his pool. Write an equation that describes the number of gallons of water as a function of the time the pool has been leaking.
y = -5,000x + 14,000

y = -1,500x + 14,000

y = -9,000x + 14,000


Is it possible for a vertical line to have a negative slope?

no

yes

Mathematics
2 answers:
Romashka [77]2 years ago
7 0

Answer: -5000x + 14,000 = 9000  and yes

Step-by-step explanation:

Irina-Kira [14]2 years ago
4 0
Hopefully you can read and learn from this.

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Line q will be graphed on the same grid. The only solution to the system of linear equations formed by lines n and q occurs when
bija089 [108]

Answer:

f(x) = k(x - \frac{3}{2})

Step-by-step explanation:

Line q will be graphed on the same grid. The only solution to the system of linear equations formed by lines n and q occurs when x = \frac{3}{2} and y = 0.

Now, as x = \frac{3}{2}  is a solution of the equation, y = f(x) = 0, so, (x - \frac{3}{2}) will be a factor of the linear function y = f(x).

Therefore, we can write the possible equation for the line q will be

f(x) = k(x - \frac{3}{2}). (Where k is any constant} (Answer)

8 0
2 years ago
If cyanide in a stream next to a gold mine increases from 240 ppm to 360 ppm, what percent increase is this?
avanturin [10]

Given :

Initial concentration , 240 ppm .

Final concentration , 360 ppm .

To Find :

Percent increase.

Solution :

Percentage increase is given by :

=\dfrac{Final-Initial}{Initial}\times 100\\\\=\dfrac{360-240}{240}\times 100\\\\=50\%

Therefore , percent increase is 50 % .

Hence , this is the required solution .

4 0
2 years ago
Please help me with these questions and show how u got them, i will mark you brainliest !
Aneli [31]
A+7
4+7
4+7=11

b-3
5-3
5-3=2

9c
9(10)
9(10)=90
4 0
2 years ago
Which statements are true about the graph of y < Two-thirdsx + 1? Check all that apply. The slope of the line is 1. The line
Marina CMI [18]

The answer would be:

The x-intercept of the boundary line is (-3/2, 0).

The area below the line is shaded.

The slope of the line should be 2/3. The area below the line shaded because the function using y<.....

Coordinate 2,3 doesn't fulfill the function. 

y < 2/3x + 1

3 < 2/3(2)+1

3< 4/3+1

3< 2.3    ---->false

X intercept is when the y variable is zero. If you put it to the equation

 y = 2/3x + 1

0= 2/3x+1

2/3x= -1

x= -3/2

8 0
2 years ago
Read 2 more answers
From an industrial area 70 companies were selected at random and 45 of them were panning for expansion next year. Find 95% confi
Lana71 [14]

Answer:

Confidence limit = [52.8%, 75.2%]

Step-by-step explanation:

P=\frac{45}{70}= 0.64

(1-P)=1-0.64=0.36

n= 70

P ± z \sqrt{\frac{P(1-P)}{n} }

where the value z will be taken from the z-table for 95% confidence interval

1-0.95= 0.05/2= 0.025

0.95+0.025= 0.0975

From the z-table the value of z corresponding to 0.0975 is 1.96

0.64 ± 1.96 \sqrt{\frac{0.64*0.36}{70} }

0.64 ± 1.96 (0.057)

0.64 ± 0.112

64%% ± 11.2%

so the confidence interval is

64+11.2=75.2%

64-11.2=52.8%

[52.8, 75.2]

8 0
2 years ago
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