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natka813 [3]
3 years ago
7

Four points are always coplanar if: Check all that apply. A. all of them are collinear B. they are not in the same plane. C. thr

ee of them are coplanar. D. they lie in the same plane. which one is it?​
Mathematics
1 answer:
pentagon [3]3 years ago
7 0

They are collinear

they lie in the same plane

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Will mark brainliest
Ksenya-84 [330]

Answer:

Plan A

Step-by-step explanation:

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Plan B costs 65

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7 0
3 years ago
I need help for this, thanks
gulaghasi [49]

(a) Yes all six trig functions exist for this point in quadrant III. The only time you'll run into problems is when either x = 0 or y = 0, due to division by zero errors. For instance, if x = 0, then tan(t) = sin(t)/cos(t) will have cos(t) = 0, as x = cos(t). you cannot have zero in the denominator. Since neither coordinate is zero, we don't have such problems.

---------------------------------------------------------------------------------------

(b) The following functions are positive in quadrant III:

tangent, cotangent

The following functions are negative in quadrant III

cosine, sine, secant, cosecant

A short explanation is that x = cos(t) and y = sin(t). The x and y coordinates are negative in quadrant III, so both sine and cosine are negative. Their reciprocal functions secant and cosecant are negative here as well. Combining sine and cosine to get tan = sin/cos, we see that the negatives cancel which is why tangent is positive here. Cotangent is also positive for similar reasons.

5 0
3 years ago
The length of a rectangle is 55 inches more than the width. the perimeter is 4242 inches. find the length and the width of the r
faust18 [17]
L = W + 55
2L + 2W = 4242

L + W = 2121
(W + 55) + W = 2121
2W + 55 = 2121

W = 1033 inches           L = 1088 inches
6 0
3 years ago
Solve 3x2+7x+1=0 using the quadratic formula.
NNADVOKAT [17]

Answer:

x=\frac{-7+-\sqrt{37} }{6}

Step-by-step explanation:

This (±) goes between the -7 and \sqrt{37}

3x^{2} +7x+1=0

ax^{2} +bx+c

-b ± \sqrt{b^2-4ac}/2a

-7 ± \sqrt{(7)^2-4(3)(1)}/2(3)

-7 ± \sqrt{49-12}/6

-7 ± \sqrt{37}/6

7 0
2 years ago
−3⋅f(−8)+7⋅g(2)= <br><br> I need help!
Eva8 [605]

Answer:

I think it would be 24 f + 14 g

3 0
3 years ago
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