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3 years ago

What is another name for plane Z?

1 answer:

4 0

Other names for "plane Z" include:
___________________________
1) The "z-plane";
___________________________
2) The "complex plane";
___________________________
3) <span>the "domain of the </span>z<span>-transform"
_____________________________</span>

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Anybody know this!? Help please ..

lubasha [3.4K]

The slopes of perpendicular lines are negative reciprocal to each other
ex. the negative reciprocal to 5/2 is -2/5

once you find the perpendicular slope, you plug in the point and slope into the point-slope form of a line and then rearrange it into the slope-intercept form to get your answer

point slope
$y-y_1 = m(x-x_1)$

slope intercept form
$y=mx+b$

4 0

3 years ago

In △ABC , line AB is extended up to point E and line BC is extended up to D . The measure of some of the angles is given as; ∠BA

Over [174]

Answer:

$\angle ACD = 130 ^\circ$ .

Step-by-step explanation:

$\angle ABC$ and $\angle EBC$ are supplementary angles. Their sum should be $180^\circ$ . $\angle EBC = 120^\circ$ $\implies \angle ABC = 180^\circ - \angle EBC = 180^\circ - 120^\circ = 60^\circ$ .

The sum of the three angles in triangle $\triangle ABC$ : $(\angle ABC + \angle BAC + \angle ACB)$ should be equal to $180^\circ$ .

$\angle ABC = 60^\circ$ and $\angle BAC = 70^\circ$ $\implies \angle ACB = 180^\circ - \angle ABC - \angle ACB = 180^\circ - 70^\circ - 60^\circ = 50^\circ$ .

$\angle ACB$ and $\angle ACD$ form another pair of supplementary angles. Their sum should also be $180^\circ$ . $\angle ACB = 50^\circ$ $\implies \angle ACD = 180^\circ - \angle ACB = 180^\circ - 50^\circ = 130^\circ$ .

8 0

4 years ago

Q: At noon the armadillo left the wild kingdom and headed north at 3 kilometers per hour . two hours later the raccoon left the

Ghella [55]

Distance of armadillo = V * t = 3t
Distance of racoon = V * (t-2) =5*(t-2)
Distance of armadillo + distance of racoon = 38
3t + 5(t-2)=38
3t + t5 - 10 =38
8t=48
t=6
The anwser is: they will be 38 km apart after 6 hours, so it is 6p.m (12a.m+6 hours)

5 0

4 years ago

How tall is the Eiffel Tower at 5pm

Phantasy [73]

To help you visualize I drew it on the paper. First you need convert feet to inches and then make a proportion. 984×12/X=6/8; 94464=6X;
X (or the shadow of Eiffel Tower) = 15744in or 1312ft.

3 0

3 years ago

What is the area of this figura?

Art [367]

Answer:

total area of the figure is: 1568 yd^2

Step-by-step explanation:

The area of the figure is the addition of the areas of a square and a rectangle:

The square on top that measures 28 yd times 28 yd, therefore its area is:

28^2 yd^2 = 784 yd^2

The rectangle at the bottom measures: 56 yd times 14 yd, therefore its area is:

Area rectangle = base x height = 56 yd x 14 yd = 784 yd^2

Then, the total area is the addition of these two:

Area of square + area of rectangle = 784 yd^2 + 784 yd^2 = 1568 yd^2

8 0

3 years ago