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3 years ago

Help!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Ksivusya [100]3 years ago

7 0

369 tickets sold out of 460

369/460 = 0.802

1 would be all of them, so you can also think of it as 80.2% were sold

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Jennifer is flying from Montana to South Carolina for vacation. Her flight leaves at 6:30 a.m. MST. Her flight is 3 hours. What

snow_lady [41]

11:30 am is the time for south carolina when she lands :)

7 0

2 years ago

X-2y=18 2x+y=6 parallel perpendicular or neither

sergey [27]

<h3>Therefore they are perpendicular.</h3>

Step-by-step explanation:

A equation of line is

y =mx +c

Here the slope of the line is m.

Given equations are

x - 2y = 18

⇔-2y = -x +18

$\Leftrightarrow y =\frac{1}{2} x -9$ ............(1)

and 2x + y = 6

⇔y = -2x +6 ............(2)

Therefore the slope of equation (1) is $(m_1)$ = $\frac{1}{2}$

Therefore the slope of equation (2) is $(m_2)$ = -2

If two lines are perpendicular, when we multiply their slope we get -1.

therefore,

$m_1. m_2$ = $\frac{1}{2}$ . (-2) = -1

Therefore they are perpendicular.

4 0

2 years ago

1 pt) If a parametric surface given by r1(u,v)=f(u,v)i+g(u,v)j+h(u,v)k and −4≤u≤4,−4≤v≤4, has surface area equal to 1, what is t

natta225 [31]

The area of the surface given by $\vec r_1(u,v)$ is 1. In terms of a surface integral, we have

$1=\displaystyle\int_{-4}^4\int_{-4}^4\left\|\frac{\partial\vec r_1(u,v)}{\partial u}\times\frac{\partial\vec r_1(u,v)}{\partial v}\right\|\,\mathrm du\,\mathrm dv$

By multiplying each component in $\vec r_1$ by 5, we have

$\dfrac{\partial\vec r_2(u,v)}{\partial u}=5\dfrac{\partial\vec r_1(u,v)}{\partial u}$

and the same goes for the derivative with respect to $v$ . Then the area of the surface given by $\vec r_2(u,v)$ is

$\displaystyle\int_{-4}^4\int_{-4}^425\left\|\frac{\partial\vec r_1(u,v)}{\partial u}\times\frac{\partial\vec r_1(u,v)}{\partial v}\right\|\,\mathrm du\,\mathrm dv=\boxed{25}$

8 0

3 years ago

How far can you run in 5/7 of an hour if you run at a speed of 8 2/5 mph?

Mazyrski [523]

Answer: you can run 6 miles

explanation: 8 2/5 divided by seven = 1.2 1.2x5 = 6

5 0

3 years ago

Select ALL the correct answers.

aksik [14]

Answer: I think it’s A the cylinder

Step-by-step explanation:

8 0

3 years ago