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Ainat [17]
2 years ago
10

If the sum of a number and four is tripled the result is eight less than twice the number

Mathematics
2 answers:
Drupady [299]2 years ago
5 0

Answer:

The number is -20.

Step-by-step explanation:

If x is the number, then 3(x+4)=2x-8.

3x+12=2x-8

x=-20

kiruha [24]2 years ago
4 0

Answer:

- 20

Step-by-step explanation:

if the number if x then 3(X+y 4= 2X-8: 3X+12= 2x-8

x = -20

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<h3> Simultaneous equations</h3>

Simultaneous equations are two or more groups of equations. These equations have to be solved together at the same time in order to determined the required valued. The two above equations have to be solved in order to determine the cost of  a  night's stay and the cost of a meal.

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2 years ago
Complete the table of values for y=x^2-2
Harrizon [31]

Step-by-step explanation:

a)

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b)

In this graph, the y represents the vertical part and x represents the horizontal. For each value of y, there is a horizontal line that can be drawn. For example, when y=0, the bolded horizontal line near the bottom of the graph represents that. We then need to find the points on the line representing x²-2 where it touches the horizontal line of y=0. This happens when x=-1.5 and x=1.5, as it is between the positive/negative 1 and 2 values of x

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