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
lianna [129]
2 years ago
5

I just need to know how to calculate

Mathematics
1 answer:
Anton [14]2 years ago
8 0

Answer:

-a^{2}

Step-by-step explanation:

\frac{-1}{a^{-2} } = \frac{-1}{\frac{1}{a^{2} } } = -1 * \frac{a^{2} }{1}  = -a^{2}

You might be interested in
7. The hexagon GIKMPR is regular. The dashed line segments form 30 degree angles. what is the image of oh after a rotation of 18
velikii [3]

Answer:

The image of OH is ON.

Step-by-step explanation:

Te figure GIKMPR is a regular hexagon. The number of vertices of a regular hexagon is 6. The central angle between any two consecutive vertices is 60 degree.

The dashed line segments form 30 degree angles.

If we rotate the hexagon 180 degree about O, then the each point shifts to 6th place from its original place.

Since we rotate the hexagon 180 degree about O, so the image and preimage lies on a straight line. Because a straight line make angle of 180 degree.

The line OH and ON lies on a straight line therefore the image of OH is ON.

3 0
3 years ago
Which statement best describes how to determine whether f(x) = x3 + 5x + 1 is an even function?
ch4aika [34]
I have my notes here that will help you in answering the problem:

Test to determine if a function y=f(x) is even, odd or neither: Replace x with -x and compare the result to f(x). If f(-x) = f(x), the function is even. If f(-x) = - f(x), the function<span>is odd.
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
7 0
3 years ago
(5/6)^4x=(36/25)^9-x, please help solve for x, and the 9-x is all superscript
stiks02 [169]
\frac{36}{25}=\frac{6^2}{5^2}=\left(\frac{6}{5}\right)^2=\left(\frac{5}{6}\right)^{-2}\\\\therefore:\\\\\left(\frac{5}{6}\right)^{4x}=\left[\left(\frac{5}{6}\right)^{-2}\right]^{9-x}\\\\\left(\frac{5}{6}\right)^{4x}=\left(\frac{5}{6}\right)^{-2(9-x)}\iff4x=-2(9-x)\\\\4x=-2\cdot9-2\cdot(-x)\\\\4x=-18+2x\ \ \ \ \ |subtract\ 2x\ from\ both\ sides\\\\2x=-18\ \ \ \ \ \ |divide\ both\ sides\ by\ 2\\\\\boxed{x=-9}


Use:\\a^{-n}=\left(\frac{1}{a}\right)^n\\\\\left(a^n\right)^m=a^{n\cdot m}\\\\\left(\frac{a}{b} \right)^n=\frac{a^n}{b^n}
6 0
2 years ago
Read 2 more answers
Solve for c 6/15=2/c
saul85 [17]
\frac{6}{15} = \frac{2}{c}   Multiply both sides by 15
6 = \frac{30}{c}   Multiply both sides by c
6c = 30   Divide both sides by 6
c = 5   
7 0
2 years ago
If six girls can finish sweeping the floor of a hall in 45mins,how long will the same work take ten girls to do
AleksandrR [38]

Answer:

15 minutes i think

Step-by-step explanation:

45÷6=7.5

meaning 7.5 minutes per girl

so 4 girls would be 30 minutes of work

so 45-30=15

4 0
3 years ago
Other questions:
  • James has an ice cube tray that makes ice in the shape of spheres rather than cubes. Each sphere of ice has a radius of 222 cm.
    9·2 answers
  • Help me plzz!!
    15·1 answer
  • What's bigger 60% of 90 or half of 100?
    10·2 answers
  • How do I simplify this?
    10·1 answer
  • Which equation can be used to find 150 percent of 500?
    14·2 answers
  • How many multiples of 2 are there between 99 and 999?
    11·1 answer
  • What is the probability of choosing a queen, a king or an ace from a standard deck of playing cards??
    10·2 answers
  • Yea I kinda forgot this so can yall like help me :]
    6·1 answer
  • There are 3 arms for every 2 eyes. If there are 6 eyes, how many arms are there?
    10·1 answer
  • Hi hi bay what is the name of the church in the park for the park in west bay park in orange brown orange yellow yellow white or
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!