What is the difference of -2.2 and 0.44?

Answers

Answer 1

Answer: 1.76 i think thats the answer

Answer 2

Answer: one is negative and the other is positive and one has a whole number, and the other only has a decimal

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Suppose you are climbing a hill whose shape is given by the equation z = 900 − 0.005x2 − 0.01y2, where x, y, and z are measured in meters, and you are standing at a point with coordinates (120, 80, 764). The positive x-axis points east and the positive y-axis points north. (a) If you walk due south, will you start to ascend or descend? ascend descend Correct: Your answer is correct.

Answers

Answer:

Ascend

Step-by-step explanation:

In order to solve this problem, we are going to use some principles of vector calculation. The concepts we are going to use are Partial derivatives, gradient vector, velocity vector, direction vector, and directional derivative.

The gradient vector is a vector that describes how is the 'slope' in the space of a multivariable function at a specified point; it is built as a vector of partial derivatives. The vector velocity is a vector that describes the direction and speed of the movement of a body, if we make the velocity a unitary vector (a vector whose norm is 1), we obtain the direction vector (because we are not considering the real norm of the vector, just direction). Finally, the directional derivative is a quantity (a scalar) that describes the slope that we get on a function if we make a displacement from a particular point in a specific direction.

The problem we have here is a problem where we want to know how will be the slope of the hill if we stand in the point (120, 80, 764) and walk due south if the hill has a shape given by z=f(x,y). As you see, we have to find the directional derivative of z=f(x,y) at a specific point (120, 80, 764) in a given displacement direction; this directional derivative will give us the slope we need. The displacement direction 'u' is (0,-1): That is because 'y' axis points north and our displacement won't be to the east either west (zero for x component), just to south, which is the opposite direction of that which the y-axis is pointing (-1 for y component). Remember that the direction vector must be a unitary vector as u=(0,-1) is.

Let's find the gradient vector:

$z=900-0.005x^2-0.01y^2\n(\partial z)/(\partial x)=-0.005*2*x=-0.01x\n(\partial z)/(\partial y)=-0.01*2*y=-0.02y\n \nabla (z)=(-0.01x,-0.02y)$

Evaluate the gradient vector at (120,80) (764 is z=f(120,80); you may confirm)

$\nabla (z(120,80))=(-0.01*120,-0.02*80)=(-1.2,-1.6)$

Finally, find the directional derivative; if you don't remember, it can be found as a dot product of the gradient vector and the direction vector):

$D_(u,P_0)= \nabla (z)_(P_0)\cdot u\nD_(u,P_0)= (-1.2,-1.6)\cdot (0,-1)=1.6$

As you see, the slope we find is positive, which means that we are ascending at that displacement direction.

The Venn diagram shows the relationship betweenseveral sets of numbers.
Where should 0.3% be placed in the Venn diagram?
Real numbers
Natural numbers, because 0.3% is a positive
number
B
Integers, because 0.3% is a decimal
Integers
Rational
numbers
Natural
numbers
Rational numbers, because 0.3% can be
written as a fraction
Real numbers, because 0.3% is an irrational
number

Answers

Answer:

Rational numbers, because 0.3% can be

written as a fraction

Step-by-step explanation:

Answer:c

Step-by-step explanation:

HELPPPPPPPP MEEEEEEE

Answers

Answer: The first choice should be correct

Step-by-step explanation:

Well I hope this is correct

Option C or they are alternate interior angles is correct.

When two lines are crossed by another line (called the Transversal): Alternate Interior Angles are a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal

Chords and arcs.

find x

Answers

The chords SR and ST are congruent, so the (minor) arcs SR and ST have the same measure.

The measure of the arcs SR, ST, and RT add up to 360º. So we have

2xº + 64º = 360º ==> x = 148

If bulb 4 were removed from the circuit what would happen to the brightness of the remaining bulbs? would this change if bulbs 3 or 5 were removed rather than 4? explain.

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I thought i knew how to do this but I don’t, sorry

Simplify your answer

Answers

Answer:

= F^2 x^2

Step-by-step explanation:

(F(x))^2

Apply the rule: (a) =a (x) = x

= (Fx)^2

Apply exonent rule: (a . b)^n = a^n b^n (Fx)^2 = F^2 x^2

= F^2 x^2

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What is the answer to 3(2b-1)

Which of the four Venn diagrams represents this?

Graph the line 3x + 6y =12.