1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pashok25 [27]
3 years ago
15

A number raised to a negative exponent is negative. always never sometimes

Mathematics
2 answers:
Romashka [77]3 years ago
8 0
It is negative only when the number itself is negative.
hence, sometimes.
FromTheMoon [43]3 years ago
8 0

Dividing negative exponents is almost the same as multiplying them, except you're doing the opposite: subtracting where you would have added and dividing where you would have multiplied. If the bases are the same, subtract the exponents. Remember to flip the exponent and make it positive, if needed.

You might be interested in
PLEASE HURRY I HAVE 3 mins left Which relationship could be the one shown on the graph?
ss7ja [257]

Option A

Must click thanks and mark brainliest

Sorry if i am wrong

4 0
2 years ago
Which pair of numbers has the same greatest common factor as that of 48 and 78
tangare [24]
<span>48: 1,2,3,4,6,8,12,16,24,48 
</span><span>
78: 1,2,3,6,13, 26, 39, 78 
</span>
The answer is 6 :)
8 0
2 years ago
Ivan plans to watch 2 movies each month. Write an equation to represent the total number of movies n that he will watch in m mon
Sedaia [141]

Answer:

n=2m

Step-by-step explanation:

3 0
2 years ago
You are given the following equation.
saul85 [17]

Answer:

Step-by-step explanation:

Given the equation  4x²+ 49y² = 196

a) Differentiating implicitly with respect to y, we have;

8x + 98y\frac{dy}{dx} = 0\\98y\frac{dy}{dx}  = -8x\\49y\frac{dy}{dx}  = -4x\\\frac{dy}{dx} = \frac{-4x}{49y}

b)  To solve the equation explicitly for y and differentiate to get dy/dx in terms of x,

First let is make y the subject of the formula from the equation;

If 4x²+ 49y² = 196

49y² = 196 - 4x²

y^{2} =  \frac{196}{49}  - \frac{4x^{2} }{49} \\y = \sqrt{\frac{196}{49}  - \frac{4x^{2} }{49} \\} \\

Differentiating y with respect to x using the chain rule;

Let u=  \frac{196}{49}  - \frac{4x^{2} }{49}

y =  \sqrt{u} \\y =u^{1/2} \\

\frac{dy}{dx}  = \frac{dy}{du} * \frac{du}{dx}

\frac{dy}{du} = \frac{1}{2}u^{-1/2} \\

\frac{du}{dx} =  0 - \frac{8x}{49} \\\frac{du}{dx} =\frac{-8x}{49} \\\frac{dy}{dx} = \frac{1}{2} ( \frac{196}{49}  - \frac{4x^{2} }{49})^{-1/2} *  \frac{-8x}{49}\\\frac{dy}{dx} = \frac{1}{2} (  \frac{196-4x^{2} }{49})^{-1/2} *  \frac{-8x}{49}\\\frac{dy}{dx} = \frac{1}{2} ( \sqrt{ \frac{49}{196-4x^{2} })} *  \frac{-8x}{49}\\\frac{dy}{dx} = \frac{1}{2} *{ \frac{7}\sqrt {196-4x^{2} }} *  \frac{-8x}{49}\\

\frac{dy}{dx} = \frac{-4x}{7\sqrt{196-4x^{2} } }

c) From the solution of the implicit differentiation in (a)

\frac{dy}{dx} = \frac{-4x}{49y}

Substituting y = \sqrt{\frac{196}{49}  - \frac{4x^{2} }{49} \\ into the equation to confirm the answer of (b) can be shown as follows

\frac{dy}{dx} = \frac{-4x}{49\sqrt{\frac{196-4x^{2} }{49} } }\\\frac{dy}{dx}  =  \frac{-4x}{49\sqrt{196-4x^{2}}/7} }\\\\\frac{dy}{dx}  = \frac{-4x}{7\sqrt{196-4x^{2}}}

This shows that the answer in a and b are consistent.

6 0
3 years ago
2. At a rate of 50 mph, a car travels a distance
Sergio039 [100]

Answer: 480 miles

Step-by-step explanation:

first you divide 600 by 50 and thats the amount of hours.

600 / 50 = 12

then multiply 40 x 12 and you got your answer. :)

40 x 12 = 480 therefore your answer is 480

5 0
2 years ago
Other questions:
  • 6 is what percent of 24
    8·2 answers
  • *PLEASE ANSWER DIFFICULT QUESTION* What is the area of the polygon?
    10·2 answers
  • A boat travels for 4 hours at a constant speed of 35.25 km/h.
    10·2 answers
  • Oceanside Bike Rental Shop charges 13 dollars plus 9 dollars an
    5·2 answers
  • MULTIPLE CHOICE
    12·2 answers
  • Find the radian measure of the central angle
    11·1 answer
  • I don't understand this, can someone help?
    9·1 answer
  • What measurement is the quantity of mass per unit volume?
    14·2 answers
  • Simplify the following fraction: 6/9
    5·1 answer
  • What is <br> fraction 1 over 3 x3 + 5.2y when x = 3 and y = 2 <br> 13.4 16.4 19.4 28.4
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!