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3 years ago

If mZA= 78°, what is the mZB?

Mathematics

1 answer:

Andrei [34K]3 years ago

4 0

Answer:

possible answers below!

Step-by-step explanation:

if they are vertical angles then the measure of ZB is 78

if they are supplementary then ZB is 102 degrees

if they are complementary then ZB is 12 degrees

It depends on where its located, cant really help if i dont have a pic..but i hope this helps! :)

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tia_tia [17]

Answer:

x = 114°

Step-by-step explanation:

x = 114

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3 years ago

2 questions in one!

laiz [17]

Answer:

Probability, eh?

Step-by-step explanation:

To figure out how likely an event is, we just put the number of the blue bands over the total number of 'other' bands.

Pretty easy!

$\frac{6}{25}$

(or do you want it in percent?)

$24%$ %

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It is unlikely he will choose a blue band, as it is much more likely he will choose a 'other' band.

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3 years ago

HELP DUE IN 2 HOURSSS

tekilochka [14]

Answer:

1.05 miles per hour

Step-by-step explanation:

m = y2 - y1/ x2 - x1 (It doesn't matter which you choose to be y2 and y1, just make it consistent)

m = 4.2 - 2.1/ 4 - 2

m = 2.1 / 2

m = 1.05

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3 years ago

You are given the parametric equations x=2cos(θ),y=sin(2θ). (a) List all of the points (x,y) where the tangent line is horizonta

vladimir1956 [14]

Answer:

The solutions listed from the smallest to the greatest are:

x: $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$ $\sqrt{2}$

y: -1 1 -1 1

Step-by-step explanation:

The slope of the tangent line at a point of the curve is:

$m = \frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

$m = -\frac{\cos 2\theta}{\sin \theta}$

The tangent line is horizontal when $m = 0$ . Then:

$\cos 2\theta = 0$

$2\theta = \cos^{-1}0$

$\theta = \frac{1}{2}\cdot \cos^{-1} 0$

$\theta = \frac{1}{2}\cdot \left(\frac{\pi}{2}+i\cdot \pi \right)$ , for all $i \in \mathbb{N}_{O}$

$\theta = \frac{\pi}{4} + i\cdot \frac{\pi}{2}$ , for all $i \in \mathbb{N}_{O}$

The first four solutions are:

x: $\sqrt{2}$ $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$

y: 1 -1 1 -1

The solutions listed from the smallest to the greatest are:

x: $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$ $\sqrt{2}$

y: -1 1 -1 1

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3 years ago

Find x3 - 2y2 - 3x3 + z4 if x = 3, y = 5, and z = -3.

zloy xaker [14]

So will be 27 -50 - 81 +81 = - 23

hope this will help you

6 0

3 years ago

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