3 years ago

Twice a number decreased by 8 by 12 is 2 less than half the number what is the number?

1 answer:

7 0

Answer:
4
Step-by-step explanation:
with the information given, we can express the equation:

where is the unknown number?
to clear for first we multiply the equation by 2, to eliminate the fraction:

moving all terms with to the left:

and adding +16 to each side:

and finally, dividing by 3

the number is 4.

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Solnce55 [7]

Hopefully I drew what you described.

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Read 2 more answers

If the end points of the diameter of a circle are (9,4) and (5,2) what is the standard form equation of the circle

timurjin [86]

Answer:

(x - 7)² + (y - 3)² = 5

Step-by-step explanation:

The center (h , k) is the midpoint of two end points of diameter

h = (9 + 5) / 2 = 7

k = (4 + 2) / 2 = 3

Equation of circle: (x - h)² + (y - k)² = r²

r = (√(9 - 5)² + (4 - 2)²) / 2 = √5

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3 years ago

Mary was asked to find the slope of the line 3x - 4y = 12. She says the answer is 3/4

Vinvika [58]

The correct answer is D. Choose two points on the graph and count the rise and the run between them. Graph D is the only one that also has a slope of 3/4 .

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