3 years ago

What is the sum of 5.439 + 3.200

Mathematics

1 answer:

Oliga [24]3 years ago

7 0

Answer:

8.639

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Convert 65,000,000 to scientific notation please help!!

Mice21 [21]

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6.5 x 10^7

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3 years ago

What is the graph of 4x + 7y = -28?

lesya692 [45]

Answer:

StGraph the line using the slope and y-intercept, or two points.

Slope: −47

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x y

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step-by-step explanation:

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3 years ago

Read 2 more answers

Over which interval is the graph of f(x) = one-halfx2 + 5x + 6 increasing?

kaheart [24]

Answer:

$\large\boxed{x\in[-5,\ \infty)}$

Step-by-step explanation:

$f(x)=\dfrac{1}{2}x^2+5x+6\\\\\text{The coeficient of}\ x^2\ \text{is the positive number. Therefore the parabola is op}\text{en up}.\\\\\text{If a parabola op}\text{en up, then the graph increasing in interval}\ (h,\ \infty),\\\text{and decreasing in interval}\ (-\infty,\ h).\ \text{Where}\ h\ \text{is a first coordinate of a vertex.}\\\\\text{For}\ y=ax^2+bx+c,\ h=\dfrac{-b}{2a}.\\\\\text{We have}\ a=\dfrac{1}{2}\ \text{and}\ b=5.\ \text{Substitute:}\\\\h=\dfrac{-5}{2\left(\frac{1}{2}\right)}=-\cdot\dfrac{5}{1}=-5.$