Answer: the answer for this one should be A. {(1.-5). (2. -4)}
Answer: The value of <em>a</em> should be 3.11.
Step-by-step explanation:
Since we have given that
We need to find the value of a so that it would yield a system of linear equations with NO solutions.
As we know the condition of no solutions, it means the lines should be parallel.
i.e.
Consider the first two terms:
So, the value of<em> a</em> should be 3.11.
Of course not.
' f(x) ' is the description of a function,and ' g(x) ' is the description of
a function. There are an infinite number of different possible functions,
so f(x) and g(x) are usually not the same one.
f(x) is equal to g(x) for any 'x' only when the two descriptions are the
same function. Otherwise f(x) is equal to g(x) only at the points where
their graphs intersect.
Answer: 6 .
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Explanation:
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To cover the triangle shown in the figure, we consider the height of the triangle (8 ft tall) and the length of the base (24 ft wide).
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Since we are given that this is a "frame", this is a rectangular frame. The problems asks, how many (minimum number of) 8 ft x <u>4</u> ft. sheets are needed to cover the entire frame?
Since the entire frame is 8 ft. x <u>24</u> ft. , The answer would be "6", since:
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24 ft ÷ 4 ft = 24 ft / 4 ft = 24 / 4 = 6 .
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So she walked during this time with <span>4 miles per hour (x*4)
during
the rest of the way (which is 0.7-x, as the whole way took her 42
minutes, so the rest is 0.7-x) she walked with 5 miles per hour - the
distance was (0..7-x)*5 m/h
the total distance was 3 miles, so if we sum the two distances, we will get 3 miles:
x*4+ (0.7-x)*5=3
let's remove the bracket:
4x+0.7*5-5x=3
</span>
<span>4x+3.5-5x=3
subtract 3.5 from both sides:
4x-5x=3-3.5
-x=-0.5
multiply both sides by (-1)
x=0.5:
so she walked for half an hour alone, that is for 30 minutes!</span>