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3 years ago

What is negative eight plus four

Mathematics

2 answers:

goldenfox [79]3 years ago

6 0

Answer:

-4

Step-by-step explanation:

- - - - - - - -

+ + + +

4 negatives cancel out and leave you with -4

sertanlavr [38]3 years ago

6 0

The answers is -8 + 4 = -4

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Shalnov [3]

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Since the auditorium can hold 600 and the student body will be divide by four parts
The answer is
x ≤ 2400

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3 years ago

A triangle has two sides that are 8cm and 13cm. What could be the length of the triangles third side

Nikitich [7]

Answer:

5 < x < 21

Step-by-step explanation:

The sum of the shorter sides is greater than the longest side.

If 13 is the longest side:

x + 8 > 13

x > 5

If x is the longest side:

8 + 13 > x

21 > x

Therefore, the third side is any number between 5 and 21.

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4 years ago

A cylindrical well is 15 meters deep and has a diameter of 1.6 meters. Approximately how many cubic meters of soil were dug out

Lisa [10]

We can dig out the soil from the well equal to volume of well.

Height(h) of well is = 15 meters.

Diameter = 1.6 meters.

So radius(r) = $\frac{1.6}{2} = 0.8$ meter.

As well in cylindrical shapes.

So volume of well = $\pi r^2h$
                               = $\pi * (0.8)^2 * 15$
                                $= 9.6 * \pi$
In general $\pi = 3.14$

So volume of well is = $9.6 * 3.14$
   $= 30.144$ cubic meter.

So we can dig out 30.144 cubic meter soil from well.

5 0

3 years ago

Dylan and Beatrice are working with the same function. Dylan input −8 into the function and got an output of 8.

kolbaska11 [484]

Answer:

Part A: If Beatrice inputs −8 into the function, she must get an output of 8.

Part B: (−4,8) , (4,−8) , (8,−4)

Step-by-step explanation:

Part A:

We know that a function is a relation that maps elements from one set (The domain, the set of the inputs) into elements from another set (the range, the set of the outputs)

Such that each input can be mapped into only one output.

Then if we know that our function maps the input -8 into the output 8.

Always that we use this function with the input -8. we will have the same output, 8.

Then we can conclude that the correct option to the first part is:

"If Beatrice inputs −8 into the function, she must get an output of 8. "

Part B:

Remember, -8 is mapped into 8, then the point (−8,4) (this says "-8 is mapped into 4) can never be on the graph of the function.

But the points:

(−4,8) , (4,−8) , (8,−4)

Could be on the graph of the function.

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3 years ago

What is the solution of the system? use a graph. check your answer. y=2x+4, y=x+2

vladimir1956 [14]

Answer:

see picture with work shown

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3 years ago

What is negative eight plus four​

What is negative eight plus four