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3 years ago

8

In the morning a tank cntained 10 litres of water.At lunch time it contained 7 litres of water.What percentage of water was used

fom the tanks

1 answer:

iren [92.7K]3 years ago

7 0

Answer:

30%

Step-by-step explanation:

10-7=3

3/10×100

=30%

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The second one.

Step-by-step explanation:

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3 years ago

The sum of a number times 5 and 24 is at least -16

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Answer:

Step-by-step explanation:

5n+24 = -16

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Veronique found the difference of a number and 8. Which expression models the situation? n minus 8 StartFraction 8 Over n EndFra

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3 years ago

What is an equation of the line that passes through the point (-6, -7) and is

Alexandra [31]

Answer:

Step-by-step explanation:

Product of slope of perpendicular lines = -1

6x + 5y = 30

Write this equation in y = mx + b form

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y = $\frac{-6}{5}x+\frac{30}{5}$

$y=\frac{-6}{5}x + 6$

Slope of this line m₁ = -6/5

m₁ * m₂ = -1

m₂ = -1÷m₁ = -1 * $\frac{5}{-6}$

$m_{2}=\frac{5}{6}$ & (-6 , -7)

Equation of the required line: y - y₁ = m (x - x₁)

$y - (-7) = \frac{5}{6}(x - [-6])\\\\y + 7 = \frac{5}{6}x + 6 *\frac{5}{6}\\\\y = \frac{5}{6}x +5-7\\\\y=\frac{5}{6}x-2$

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3 years ago

A bottle contains 2 liters of water. The bottle leaks 80 milliliters of water every 3 minutes. Will the bottle be empty in 1 hou

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Answer:

No

Step-by-step explanation:

2 liters = 2,000

80/3 = 26.6

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the bottle will leak 1.596 an hour

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3 years ago