If you are good at science pls answer these questions (only 4 questions)

Mathematics

1 answer:

igomit [66]3 years ago

4 0

#19 - amphibians do not produce amniotic eggs. Therefore they must lay their eggs in water so they don't dry out

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Working simultaneously, four fudge machines complete a big order in 32 hours. All the machines at the fudge factory work at the

Alinara [238K]

Answer:

4 Hours

Step-by-step explanation:

Let's say that the rate of the machines 1/x, because every time they complete an order, it takes them x hours. To find x, we have to add the the rates of the individual machines, which would equal the rate of the machines working together. We know that there are four machines working together at the same rate, and it took them 32 hours.

So:

1/x + 1/x + 1/x + 1/x = 1/32

1/4x = 1/32

4x = 32

x = 8

Thus, the rate of the machines is 1/8.

Now we have to find the time of the order with only half of the machines working together. This time, we don't know the combined rate, so I'll substitute it for y.

1/8 + 1/8 = 1/y

1/4 = 1/y

y = 4

The time taken to complete it is 4 hours.

3 0

3 years ago

Read 2 more answers

I have been gone for a long time TIME TO ANSWER STUP!D QUESTION!!!!!!!!!(JK)e Points Free

bezimeni [28]

Answer:

Thanks kind stranger! :)

Step-by-step explanation:

3 0

3 years ago

Write each quadratic expression in standard form. Draw a diagram if needed. (x+4)(x-1)

12345 [234]

Answer:

The standard form of the quadratic equation is x² + 3·x - 4 = 0

Step-by-step explanation:

The standard form of a quadratic equation is a·x² + b·x + c = 0

Given that the expression of the quadratic equation is (x + 4)·(x - 1) = y, we can write the given expression in standard form by expanding, and equating the result to zero as follows;

(x + 4)·(x - 1) = x² - x + 4·x - 4 = x² + 3·x - 4 = 0

The standard form of the quadratic equation is x² + 3·x - 4 = 0

The graph of the equation created with MS Excel is attached