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
Luda [366]
3 years ago
8

. Show that square of any positive integer can not be of form 7q + 3 or 7q+5or 7q + 6, for any integer q

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
4 0

Step-by-step explanation:

7q + 3 or 7q+5 or 7q + 6

solve for q

7q + 3 =

7q + 3 -3 =-3

7q = -3

7q/7 = -3/7

q = -3/7

7q + 3 =

7q + 6 -6 =-6

7q = -6

7q/7 = -6/7

q = -6/7

You might be interested in
What is the LCD for ?11/20 31/45<br><br> 315<br><br><br> 105<br><br><br> 66<br><br><br> 945
Mnenie [13.5K]
None of these are choices, because in order to make 20ths equal a 45th, it was to end in a 20,40,60,80, or ending in 00. 
8 0
3 years ago
If f(x)=4x+9+2, which inequality can be used to find the domain of f(x
Ksju [112]
First off, the function above is incomplete, however, by the looks of it, likely a quadratic, anyway, the values "x" can safely take on would be all real numbers, thus  -∞ < x < +∞
3 0
3 years ago
(04.02 MC)<br> Solve the system of equations.<br> 5x + y = 9<br> 3x + 2y = 4
goblinko [34]

Answer:

(2,-1)

Step-by-step explanation:

Multiply first equation by 2:

10x + 2y = 18

Subtract the second equation from this so that the 2y terms cancel:

10x - 3x = 18 - 4

7x = 14

x = 2

Plug into first equation to find y:

5(2) + y = 9

10 + y = 9

y = -1

The answer is (2,-1)

7 0
3 years ago
Read 2 more answers
What is the length of the hypotenuse,c ? 3m 5m
UkoKoshka [18]

Answer:

square root of 34

Step-by-step explanation:

ok so S is for Squared

Cs= As+Bs

5s+3s= Cs

25+9=34

Cs=34

C= square root of 34

to get C we need to square root Cs

square root of 34

so C is 5.83

5 0
3 years ago
What is the solution set to, "Katie wants to collect over 100 seashells. She already has 34 seashells in her collection. Each da
Anastaziya [24]

Answer:

Katie will collect more than 100 seashells in 5 and a half days.

Step-by-step explanation:

Katie already has 34 seashells in her collection.

Each day, she finds 12 more seashells on the beach.

Let x be the number of days Katie is collecting seashells.

In x days, she will collect 12x seashells.

In total, she will collect 34+12x seashells.

Katie wants to collect over 100 seashells, so

34+12x> 100

Solve this inequality. Subtract 34:

34+12x-34>100-34\\ \\12x>66\\ \\2x>11\\ \\x>5 \dfrac{1}{2}

Katie will collect more than 100 seashells in 5 and a half days.

3 0
3 years ago
Other questions:
  • What are three rational numbers between 0.2 and 0.3 (one must be a fraction)?
    6·2 answers
  • FI = 20 IH = 19. Calculate the length of GI
    11·1 answer
  • Last month, the daily balance in Joana's credit card account was $1,000 for 9 days, $750 for 10 days, $850 for 4 days, and $900
    6·1 answer
  • Can someone help me, thanks.
    11·1 answer
  • Write an exponential function to describe the given sequence of numbers, assuming that the first number in the sequence correspo
    7·1 answer
  • 1. A girl scout troop uses 14 flashlight batteries on a three-night camping trip. If they are planning a seven-night trip, how m
    12·1 answer
  • What is/are the constant(s) of 2x + 9 + 7x?
    15·2 answers
  • What is 3 1/3 - 1 1/2​
    15·1 answer
  • If -2a &gt; 6 then a &lt; -3 true or false
    12·1 answer
  • THOMAS OSLER IS BUYING A TOWNHOUSE SELLING FOR $175,000. HIS BANK IS
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!