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3 years ago

What the answer to 4 x 4 x 4

Mathematics

1 answer:

serious [3.7K]3 years ago

3 0

4x 4 x 4 = 64. I hope this helps.

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Under her cell phone plan, Ellie pays a flat cost of $50 per month and $5 per

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Answer:

She can use 4GB of data

You keep on adding five dollars on top of 50 until you reach 70.

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3 years ago

Which equation represents a direct linear variation?

kvasek [131]

No don't pleeeeeeassssseeer

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3 years ago

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Solve x 2 + 9x + 8 = 0 by completing the square. What are the solutions?

Sindrei [870]

So firstly, what two terms have a product of 8x^2 and a sum of 9x? That would be x and 8x. Replace 9x with x + 8x: $x^2+x+8x+8=0$

Next, factor x^2 + x and 8x + 8 separately. Make sure that they have the same quantity on the inside: $x(x+1)+8(x+1)=0$

Now you can rewrite the equation as $(x+8)(x+1)=0$

Now using zero product property, solve for x:

$x+8=0\\ x=-8\\ \\ x+1=0\\ x=-1$

<u>In short, the solutions are {-1,-8}, or C.</u>

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4 years ago

Evaluate the line integral, where C is the given curve. C sin(x) dx + cos(y) dy, where C consists of the top half of the circle

kenny6666 [7]

Parameterize the circular part of $C$ (call it $C_1$ ) by

$x=4\cos t$

$y=4\sin t$

wih $0\le t\le\pi$ , and the linear part (call it $C_2$ ) by

$x=-4-t$

$y=4t$

with $0\le t\le1$ .

Then

$\displaystyle\int_C\sin x\,\mathrm dx+\cos y\,\mathrm dy=\left\{\int_{C_1}+\int_{C_2}\right\}\sin x\,\mathrm dx+\cos y\,\mathrm dy$

$=\displaystyle\int_0^\pi(-4\sin t\sin(4\cos t)+4\cos t\cos(4\sin t))\,\mathrm dt+\int_0^1(-\sin(-4-t)+\cos4t)\,\mathrm dt$

$=0+\displaystyle\int_0^1(\sin(t+4)+\cos4t)\,\mathrm dt$

$=\cos4-\cos5+\dfrac{\sin4}4$

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3 years ago

A line of best fit is drawn for the set of points shown on the graph. Which point is an approximate extrapolation for x = 30 fro

Goshia [24]

Answer with explanation:

Equation of Linear Regression line is

y=1.14 x + 3.805

A line of regression is that line which passes through none of the points, few points or all the points in the two dimensional coordinate plane.It tells value of one variable when another variable is known.

for, x=30

y=1.14 × 30 +3.805

y=34.20 +3.805

y=38.005

y=38 (approx)

So, Ordered pair is , (30,38)

Option B

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