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choli [55]
2 years ago
9

A concrete mixing tub contains 34 liters of water and 22 liters of sand. Starting at the same time, water is added to the tub at

a rate of 5 liters per minute,
while sand is also added to the tub at a rate of 7 liters per minute.
Part A
In how many minutes will the tub contain equal amounts of water and sand?
2 minutes
6 minutes
12 minutes
24 minutes
Mathematics
1 answer:
lubasha [3.4K]2 years ago
3 0

Answer:

6 minutes

6

6 minutes

6 minutes

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Answer:

41

Step-by-step explanation:

Matrix Multiplication follows a row-column format. In order to compute this, you must be familiar with vector dot products.

With that in mind, lets get straight into it.

The order that matrix multiplication follows means that the terms in the result are filled in left to right, then top to bottom.

Therefore, a21 will be the 3 value that is computed. This is important becuase this allows to directly compute a21, instead of using up a lot of time computing all the values before.

As a21 is located in the bottom row 1st column, we take the dot product of the 2nd row in matrix 1 and the 1 column in matrix two.

So we have:

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3 years ago
Let n = 14.<br><br> What is the value of y in the equation y = 2 × n + 3?
Ghella [55]

n=14 \\y=2\times n +3=2\times14+3 \\y=24+3\Longrightarrow y=\boxed{27}

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What is N in -2n+2(3n+14)=-20​
seraphim [82]

Answer:

To solve for n you need to get it by itself

First you want to distribute your 2 through the (3n+14)

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Then you want to subtract -28 from both sides

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Could someone please help answer this, thank you, will give brainliest, plz no spam (home work help) thanks!
kolezko [41]
A < -12

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The sum of a number (n) and 14 is 72. Which equation shows this relationship
NemiM [27]
I believe the answer is N+14=72
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3 years ago
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