5x + 4 = x + 12 how do find x

Mathematics

1 answer:

BartSMP [9]4 years ago

6 0

Answer:

Step-by-step explanation:

First, you must subtract 4 from sides of the equal sign. When you have reached 5x=x+8. You must subtract x from both sides of the equal sign. You should end with 4x=8, you then divide 4x by 4 and 8 by 4. Finally you will finish with a answer of x=2.

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Step-by-step explanation:

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How do I do numbers 12 to 14?

NARA [144]

Answer:

12. 1 second, 35 ft; 2 seconds, 32 ft

13. (t, y) = (1.4 seconds, 37.6 feet)

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Step-by-step explanation:

12. You have properly answered question 12.

After 1 second, the height is 35 feet; after 2 seconds, it is 32 feet.

13. My method of choice is to plot the graph on a graphing calculator and let it show me the coordinates of the vertex when I highlight that point. (See attached.) The vertex is ...

(t, y) = (1.4, 37.6)

14. The graph is a graph of height when the object is launched with a vertical velocity of 45 ft/s. So, the maximum of the graph will correspond to the maximum height of the object. The vertex is that maximum point, and its y-coordinate is that maximum height.

The maximum height is 37.6 feet.