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
puteri [66]
3 years ago
12

How do you solve number 27 and 28

Mathematics
1 answer:
Elanso [62]3 years ago
8 0

27) if a = 1/a

multiply both sides by a

a * a = 1/a * a

a^ 2 = 1

Answer is D) 1

28)

6 x 75 = 450

7 x 80  = 560

8 x 85 = 680

9 x 90 = 810

Total all students in class = 6 + 7 + 8 + 9 = 30 students

Total score of whole class:

450 + 560 + 680 + 810 = 2500

Average = 2500 /30 = 83.3 = 83 1/3

Answer is C) 83 1/3

You might be interested in
Help pleaseeeeeeeeeee
Andrews [41]

Answer:

I don't help ppl who just takes points from ppl with out helping :) Look at the past answers from her.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Name the set of 4 consecutive integers starting with -4
AVprozaik [17]
-4, -3, -2, -1

Consecutive integers are integers that are exactly one unit away from each other. -4 is one unit away from -3, and likewise with -3 and -2 and -2 and -1. 
7 0
3 years ago
Three times the largest of three consecutive even integers is 76 more than the sum of the other two integers what are the intege
DerKrebs [107]
<span>go tot he website of 
</span>
https://www.algebra.com/algebra/homework/Problems-with-consecutive-odd-even-integers/Problems-with-c...

It will help you understand the problem and give you the answer.
7 0
4 years ago
What’s the inverse f(x) = 2x-5
zheka24 [161]

Answer:

25

Step-by-step explanation:

it's so easy to get to know

5 0
3 years ago
Read 2 more answers
The students in a third-grade classroom arranged the desks in this shape.
Eva8 [605]

Answer:

D or B i think

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Which of the binomials below is a factor of this trinomial
    6·1 answer
  • Jenna jump 156 inches in the long jump competition After High School track meet how many feet did Jenna jump
    12·2 answers
  • Would this problem be graphing, substitution, or elimination? A perfume maker has stocks of two perfumes on hand. Perfume A sell
    15·1 answer
  • A) Calculate an estimate for the mean height of the students. 129.3 cm
    5·1 answer
  • A store sells a package of 25 trading cards for 5.25. What is the cost of one trading card
    6·2 answers
  • The perimeter of a rectangular plot of land is 250 meters if the. Length of one side of the plot is 40 meters what is the area o
    8·1 answer
  • Hayden's rectangular container has a height of 6ft and a base area of 72 square feet. Find the volume of water it would take to
    5·1 answer
  • From 99° to 70°f what is the percent decrease
    12·2 answers
  • What is the value of the expression when y=5y=5 and z=3z=3
    13·1 answer
  • What is the product of (7 x 10^-5) x (5 x 10^-8) <br> (7 x 10^-5) x (5 x 10^-8) = ? x 10^?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!