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musickatia [10]

2 years ago

12

In a survey 8/10 of the students chose saturday and 1/10 chose monday as their favorite day of the week. What fraction shows the

students who chose saturday or monday as their favorite day?

1 answer:

Y_Kistochka [10]2 years ago

5 0

90% because 8/10+1/10=9/10=90%

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Find the length of the curve. R(t) = 7t, 3 cos(t), 3 sin(t) , −2 ≤ t ≤ 2

Leviafan [203]

we are given

$r(t)=(7t,3cos(t),3sin(t))$

we can find x , y and z

$x=7t,y=3cos(t),z=3sin(t))$

now, we can use arc length formula

$L=\int\limits^a_b {\sqrt{(x')^2+(y')^2+(z')^2} } \, dt$

now, we can find derivative

$x'=7,y'=-3sin(t),z'=3cos(t))$

now, we can plug values

and we get

$L=\int _{-2}^2\sqrt{7^2+\left(-3\sin \left(t\right)\right)^2+\left(3\cos \left(t\right)\right)^2}dt$

$L=\int _{-2}^2\sqrt{7^2+9}dt$

$=\sqrt{58}\cdot \:2-\left(-2\sqrt{58}\right)$

$L=4\sqrt{58}$ ...........Answer

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3 years ago

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3 years ago

Which of these points is closest to the point (7,1)?

xz_007 [3.2K]

Answer:

6,7

Step-by-step explanation:

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3 years ago

Graph y=(x+2)^2-3 <br> Show Vertex

nikklg [1K]

$\bf ~~~~~~\textit{parabola vertex form}
\\\\
\begin{array}{llll}
\boxed{y=a(x- h)^2+ k}\\\\
x=a(y- k)^2+ h
\end{array}
\qquad\qquad
vertex~~(\stackrel{}{ h},\stackrel{}{ k})\\\\
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anyanavicka [17]

Answer:

x = 37

Step-by-step explanation:

by using vertically opp angles

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2 years ago

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