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Amanda [17]
3 years ago
13

After a hurricane, the Johnsons had 6 inches of water in their basement that was being pumped out at a rate of 1 inch per hour.

The Grahams had 10 inches of water in their basement being pumped out at a rate of 2 inches per hour. Write an inequality that can be used to determine the number of hours it will for the water level in the Grahams’ basement to be equal to or less than the Johnsons’.
Mathematics
1 answer:
iren2701 [21]3 years ago
4 0

Answer:

6>5

Step-by-step explanation:

I know it is true

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What is the slope of this graph?
Sever21 [200]

Answer:

-3/4

Step-by-step explanation:

First, pick two coordinates.

(0,2) and (4,-1)

Then do the rise over run or y/x.

The y is 3 and the x is 4. That is 3/4.

Since the line is going down, it will be negative.

The answer is -3/4.

6 0
3 years ago
The value of a certain car decreases by 16% each year. What is the 1⁄2-life of the car?
svet-max [94.6K]

Answer:

The half life of the car is 3.98 years.

Step-by-step explanation:

The value of the car after t years is given by the following equation:

V(t) = V(0)(1-r)^{t}

In which V(0) is the initial value and r is the constant decay rate, as a decimal.

The value of a certain car decreases by 16% each year.

This means that r = 0.16

So

V(t) = V(0)(1-r)^{t}

V(t) = V(0)(1-0.16)^{t}

V(t) = V(0)(0.84)^{t}

What is the 1⁄2-life of the car?

This is t for which V(t) = 0.5V(0). So

V(t) = V(0)(0.84)^{t}

0.5V(0) = V(0)(0.84)^{t}

(0.84)^{t} = 0.5

\log{(0.84)^{t}} = \log{0.5}

t\log{0.84} = \log{0.5}

t = \frac{\log{0.5}}{\log{0.84}}

t = 3.98

The half life of the car is 3.98 years.

7 0
3 years ago
SUSTITUTION 3X-6Y=2<br> 5X+4Y=1
Montano1993 [528]
3x - 6y = 2
5x + 4y = 1

(-1/3, -1/6)

~Hope I helped!~



6 0
3 years ago
Rationalise the denominator 5 by√7-√5
taurus [48]

i wasn't sure on how to explain it so i just attached ur answer

4 0
3 years ago
PLZ HELP ASAP!
sineoko [7]

Answer:

The ordered pair (1, 2) is a solution to the system of linear equations.

3 0
3 years ago
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