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slava [35]
2 years ago
8

An aquarium tank can hold 6000 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can

fill the tank in 40 minutes. The second pipe can fill the tank in 60 minutes by itself. When both pipes are working together, how long does it take them to fill the tank?
Mathematics
1 answer:
Usimov [2.4K]2 years ago
7 0
The answer is 24 minutes
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U<br> Question 8<br> Find the value of the variable in the parallelogram.<br> (6a + 10)<br> 130°
Alexus [3.1K]

Answer:

20

Step-by-step explanation:

(6a + 10) = 130

(6 x 20) + 10 = 130

120 - 10 = 130

130 = 130

5 0
3 years ago
Let’s say Reena and Greg each work for 20 minutes making envelopes. Who will have more envelopes to sell in the flea market? Wha
Veronika [31]

Answer:

The slope of f(x) is greater than g(x). In fact, it is double the slope of g(x). This means Reena can make envelopes two times as fast as Greg. But the y-intercept of g(x) is greater than f(x), meaning at 0 minutes, Greg starts with more envelopes than Reena. If they work for 20 minutes, Greg will have 10 more envelopes than Reena. But if they work longer than 30 minutes, Reena will have a larger stock of envelopes than Greg.

Step-by-step explanation:

answer from Plato

6 0
2 years ago
Question 3<br> Find the constant of variation (k).<br><br> -y + 9x = 0
egoroff_w [7]

Answer:

9

Step-by-step explanation:

-y + 9x = 0

y = 9x

y = kx

k = 9

3 0
3 years ago
What is the area of this figure?
nalin [4]

Answer:

<em>290.5 square miles</em>

Step-by-step explanation:

Consider splitting this figure into two mini rectangles and a triangle, each of given lengths;

Dimensions of Rectangle 1 - Height ; 5 mi, Length ; 7 mi,\\Area of Rectangle 1 - Height * Length = 5 mi * 7 mi = 35 mi^2\\\\Dimensions of Rectangle 2 - Height ; 18 mi, Length ; 8 mi,\\Area of Rectangle 2 - Height * Length = 23 mi * 8 mi = 184 mi^2\\\\Dimensions of Mini Right Triangle - Height ; 11 mi, Base ; 8 + 5 = 13 mi,\\Area of Mini Right Triangle - 1 / 2 * Base * Height = 1 / 2 * 13 mi * 11 mi = 71.5 mi^2,\\\\Area of Figure = 35 mi^2 + 184 mi^2 + 71.5 mi^2 = 290.5 square miles

<em>Solution; 290.5 square miles</em>

4 0
2 years ago
What is the solution to –2|2.2x – 3.3| = –6.6?
julsineya [31]

The solution would be x = 0, x = 3

3 0
3 years ago
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