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
OLga [1]
3 years ago
5

+) Evaluate the expression 81 – 82. 81 – 82 =

Mathematics
2 answers:
Kazeer [188]3 years ago
8 0

Answer:

81-8²

=81-(8×8)

=81-64

=17

Temka [501]3 years ago
7 0
81 - 8^2 is 17 ..............
You might be interested in
If line XZ is 2ft, line YZ=18in. what is the length of line XY
Lunna [17]

Answer:

XY = 6 in


Step-by-step explanation:

XZ = 2ft = 24 in.

XY + YZ = 24 in.

XY + 18 in. = 24 in.

XY = 24 - 18 = 6 in


3 0
3 years ago
A student heats a crucible and sample of a hydrate as directed in the lab procedure. However, the student removes the crucible f
vampirchik [111]

Answer:

The mass will alter with time as water is absorbed back into the crystals.

Step-by-step explanation:

5 0
3 years ago
traveled Downstream a distance of 33 Mi and then came right back. If the speed of the current was 12mph and the total trip took
spayn [35]
<span>Traveled Downstream a distance of 33 Mi and then came right back. If the speed of the current was 12 mph and the total trip took 3 hours and 40 minutes.
Let S = boat speed in still water then                                                                         (s + 12) = downstream speed                                                                                  (s -12) =  upstream speed 
     Given Time = 3 hours 40 minutes = 220 minutes   = (220/60) h = (11/3) h                      Time = Distance/Speed
                  33/(s +12) + 33/(s-12) = 11/3                                                                               3{33(s-12) + 33(s +12)} = 11(s+12) (s -12)                                                          99(s -12 + s + 12) = 11(</span> s^{2} + 12 s -12 s -144)                                                   99(2 s) = 11(s^{2} -144)                                                                                        198 s/11 = (s^{2} -144)                                                                                         18 s = (s^{2} -144)                                                                                            (s^{2} - 18 s - 144) = 0                                                                                         s^{2} - 24 s + 6 s -144 =0                                                                                       s(s- 24) + 6(s -24) =0                                                                                            (s -24) (s + 6) = 0                                                                                                  s -24 = 0, s + 6 =0                                                                                                s = 24, s = -6                                                                     Answer) s = 24 mph is the average speed of the boat relative to the water.  
7 0
3 years ago
There are 59 people going on a field trip.
Maru [420]

You first multiply 6 and 8 to see how many people are put in the vans without rented a van. This would equal 48. You then subtract 48 from 59 to see how many people still need to be in a van. This would leave you with 11 people. Then you divide 8 from 11 to get 1 3/8. This means you need 2 vans to fit everyone.

3 0
3 years ago
A parallelogram has two
Hatshy [7]

Answer:

x + (x + 55) = 180

2x =125

The angle is 62.5 degrees

Double-Check

62.5 + (62.5 + 55) = 180

125 + 55 = 180

62.5 is the smaller angle

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Cody wants to watch a new movie that is 3 hours long. He has watched 1/6 of the movie so far. What fraction of one hour did Cody
    12·1 answer
  • The formula for any arithmetic sequence is an = a1 + d(n - 1), where an represents the value of the nth term, a1 represents the
    7·2 answers
  • HELP ME PLZZZZZZZZZ :( WILL GIVE A NICE PRETTY BRAINLIEST ;) LOOK BELOW TO ANSWER THE QUESTION
    5·2 answers
  • Help on this asap is for today!!
    13·1 answer
  • Factor the sum of terms as a product of the gcf and sum 18+20
    10·1 answer
  • Given that a = 7.4 cm and b = 2.5
    8·1 answer
  • At 7am the temperature was -4 degrees. by 3pm the temperature had gone up by 10 degrees. what was the temperature at 3am
    10·2 answers
  • Describe the graph of the line y = 15
    5·1 answer
  • Evaluate (−23)×(−23)3 by using the Laws of Exponents
    9·1 answer
  • Need help ASAP!!!!!<br><br> What is the common ratio for f(x)=2^x-3+5
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!