The function f(x) = is shown on the graph. Which statement is correct?

1 answer:

7 0

There is no real value which is the square root of a negative number. So the domain of f(x)=√-x is

x=(-oo,0] or "all real numbers less than or equal to zero

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Darla drives at a constant speed of 45 miles per hour. If she drives for y miles and it takes her x hours, write the two-variabl

Darya [45]

Answer:

y = 45x miles

Step-by-step explanation:

Speed is the rate of change of distance with time. Mathematically,

speed = distance/time

Given that Darla travels at a constant speed of 45 miles per hour and for y miles, it takes her x hours then

45 = y/x

multiply both sides by x

45x = y

then the number of miles (y) Darla can drive in x hours

y = 45x (in miles)

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3 years ago

15. What is the graph of the function rule? <br> y = |3x| - 1

VladimirAG [237]

<h3>Answer:</h3>

<h3>Explanation:</h3>

The graph of |x| opens upward. Your graph is vertically stretched by a factor of 3 and translated downward 1 unit.

Graphs B and D open upward, but only graph D is translated downward (not upward, as in B).

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3 years ago

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How can you use doubles when multiplying with 4 to find 4x8

pshichka [43]

4 = 2 * 2

Multiplying by 2 is the same a doubling.
Since 4 is 2 * 2, to multiply a number by 4, double the number twice.

Example:
What is 4 * 100?
Double 100 to get 200.
Double 200 to get 400.
Therefore, 4 * 100 = 400.
By doubling twice, we do the same as multiplying by 4.

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3 years ago

Simplify 5 to the power of negative 2 over 4 to the power of 6?

Naya [18.7K]

Answer:

Step-by-step explanation:

$\frac{5^{-2} }{4^{6} } =\frac{1}{5^{2} 4^{6} }$