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2 years ago

How many terms are in the arithmetic sequence 9, 2, −5, . . . , −187?

Mathematics

1 answer:

8090 [49]2 years ago

4 0

A(n) = 9 - 7(n-1)

The sequence decreases by -7 each time.

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o-na [289]

Answer:

The measure of exterior angle is 6 is 122

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2 years ago

Let L be the line parametrized by x = 2 + 2t, y = 3t, z = −1 − t. (a) Find a linear equation for the plane that is perpendicular

Elden [556K]

Answer:

Step-by-step explanation:

Given that L is a line parametrized by

$x = 2 + 2t, y = 3t, z = −1 − t$

The plane perpendicular to the line will have normal as this line and hence direction ratios of normal would be coefficient of t in x,y,z

i.e. (2,3,-1)

So equation of the plane would be of the form

$2x+3y-z =K$

Use the fact that the plane passes through (2,0,-1) and hence this point will satisfy this equation.

$2(2)+3(0)-(-1) =K\\K =5$

So equation is

$2x+3y-z =5$

b) Substitute general point of L in the plane to find the intersecting point

$2(2+2t)+3t-(-1-t) =5\\4+8t+1=5\\8t=0\\t=0\\(x,y,z) = (2,0,-1)$

i.e. same point given.

3 0

2 years ago

How do you do this? is geometry please help this define my grade

ella [17]

Answer:

x = 21.287

Step-by-step explanation:

Use:

SOH CAH TOA

Cos(37) = 17.3/x

x = 21.287

7 0

2 years ago

Read 2 more answers

Helppp and explain too

kozerog [31]

Answer:

the first option

Step-by-step explanation:

I have attached the explanation. hope this help

5 0

2 years ago

If the polygon is a regular hexagon, find m>S.

Lerok [7]

The answer to this question is A. 120°

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2 years ago