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lord [1]
3 years ago
11

What is the solution of the following system?

Mathematics
1 answer:
erica [24]3 years ago
8 0

Answer:

The answer to your question is: both lines are the same.

Step-by-step explanation:

                                   

                                             3x + 3y = 10

                                            -9x -9y = -30

Elimination method

                                            9x + 9x = 30

                                           -9x -  9y = -30

                                              0     0      0

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Henry is mixing concrete. To make concrete he needs to mix cement, sand and gravel in the ratio 1 : 4 : 7 by weight. Henry needs
jolli1 [7]

Answer:

Henry is short of gravel

Step-by-step explanation:

Here, we are to identify which of the ingredients Henry is short of.

To identify this ingredient, what is needed to be done is to share the 180kg of concrete appropriately to get which of the material does not meet its ratio and thus allowing us know which is insufficient.

The total ratio is 1 + 4 + 7 = 12

For cement, we have ;

1/12 * 180 = 15 kg

For sand, we have

4/12 * 180 = 60kg

For gravel, we have

7/12 * 180 = 105 kg

From the values in the question, we can see that all the values we have are greater what is shared in the ratio except in the case of gravel. So we can confidently say he is short of gravel

8 0
3 years ago
Bob used identical cubes to build a rectangular tower that is 25 cubes tall, 5 cubes wide, and 6 cubes long. Beatrice used the s
Mazyrski [523]

Answer:

ok so first we have to find out how meaning cubes are in each tower so

bob 25*5*6=750

beatrice 12*3*5=180

ok so we want to see how many extra layers bob can add on with beatrices blockes so from looking at bobs tower we can see that 5*6 each layer is 30 so

180/30=6

so bobs will be 31 blocks tall

Hope This Helps!!!

3 0
2 years ago
Math question
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3 years ago
Read 2 more answers
When lines are parallel, they are____________________.
son4ous [18]
When lines are parallel, they are INDEPENDENT.

Parallel lines are identified as such when these lines do not intersect. They run in the same direction. They keep the same distance apart and they have the same slope.


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4 years ago
A pound of coffee costs $2.50 at a wholesale. A grocery store marks the coffee up 200% before selling to the customers. What is
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$5.00 is the prince per pound of coffee. you know this because 200% is twice the original value, and $2.50 times two is $5.00
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