Ask question

Ask question

All categories

4 years ago

7

Is that communicative property

1 answer:

ipn [44]4 years ago

5 0

Answer:

That is not commutative property.

Step-by-step explanation:

Commutative property would be a + b = b + a. In this case that is not what the problem is showing.

You might be interested in

Please help Ladder question!!

PIT_PIT [208]

Answer:

Step-by-step explanation:

This is a related rates problem from calculus using implicit differentiation. The main equation is going to be Pythagorean's Theorem and then the derivative of that. Pythagorean's Theorem is

$x^2+y^2=c^2$ where c is the hypotenuse and is a constant. Therefore, the derivative of this with respect to time, and using implicit differentiation is

$2x\frac{dx}{dt}+2y\frac{dy}{dt}=0$ and dividing everything by 2 to simplify a bit:

$x\frac{dx}{dt}+y\frac{dy}{dt}=0$ . Upon analyzing that equation, it looks like we need values for x, y, $\frac{dx}{dt}$ , and $\frac{dy}{dt}$ . And here's what we were given:

$\theta=45$ and $\frac{dx}{dt}=.5$ In the greater realm of things, that's nothing at all.

BUT we can use the right triangle and the angle we were given to find both x and y. The problem we are looking to solve is to

Find $\frac{dy}{dt}$ at the instant that $\frac{dx}{dt}$ = .5.

Solving for x and y:

$tan45=\frac{x}{6}$ and

6tan45 = x ( and since this is a 45-45-90 triangle, y = x):

$6(\frac{\sqrt{2} }{2})=x=y$ so

$x=y=3\sqrt{2}$ and now we can fill in our derivative. Remember the derivative was found to be

$x\frac{dx}{dt}+y\frac{dy}{dt}=0$ so

$3\sqrt{2}(\frac{1}{2})+3\sqrt{2}\frac{dy}{dt}=0$ and

$\frac{3\sqrt{2} }{2}+3\sqrt{2} \frac{dy}{dt}=0$ and

$3\sqrt{2}\frac{dy}{dt}=-\frac{3\sqrt{2} }{2}$ and multiplying by the reciprocal of the left gives us:

$\frac{dy}{dt}=-\frac{3\sqrt{2} }{2}(\frac{1}{3\sqrt{2} })$ so

$\frac{dy}{dt}=-\frac{1}{2}\frac{m}{s}$

8 0

3 years ago

What is the greatest common factor of 34 and 58

Stella [2.4K]

The greatest common factor is 2

8 0

3 years ago

Read 2 more answers

Here is an addition sentence.

dexar [7]

B because in commutative property of addition the numbers switch but they do not change the sign nor the numbers. hope this helped

5 0

4 years ago

Read 2 more answers

In 2017, solar and wind electricity generation totaled 218 thousand megawatt hours (MWH) Wind generated 2 thousand MWH more than

Lyrx [107]

Answer:

W=191,000MWH S=27,000MWH

Step-by-step explanation:

OK, let's W be wind electricity generated and S, solar electricity generate.

TOTAL GENERATED: <u>218,000mwh = W + S </u>

RELATION BETWEEN W AND S: <u>W = 2,000mwh + 7S</u>

We have now two equations:

218,000 = W + S

W = 2,000 + 7S

Put th value of W into the 1st equation in order to find S:

218,000 = 2,000 + 7S + S

218,000 = 2,000 + 8S

218,000 - 2,000 = 8S

216,000 = 8S

S = 216,000/8

S = 27,000mwh

Now, we find W.

W = 2,000 + 7*27,000mwh

W = 2,000 + 189,000mwh

W = 191,000mwh

4 0

3 years ago

(4x^2y^3)^2<br><br> what’s the answer

nexus9112 [7]

Answer:

4x^4y^6

Step-by-step explanation:

(4x²y³)²=

4x^4y^6

4 0

3 years ago

Read 2 more answers