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
jenyasd209 [6]
3 years ago
5

Find all x ∈ Z satisfying each of the following equations.3x = 2 (mod 7)

Mathematics
1 answer:
Vlada [557]3 years ago
5 0

Answer:

7x−3=7k,x=7k+3,k∈ℤ

Step-by-step explanation:

3x ≡ 2 (mod 7)

3 is a solution, since 3×3−2=7.

All solutions are 3+7ℤ

y=3x−2/7=3(x−3)+7/7=3(x−3)/7+1

7x−3=7k,x=7k+3,k∈ℤ

You might be interested in
Your sister rented a stand and sold T-shirts at your local market. The rent fee is $8. If she can make $2 from every T-shirt, ho
NNADVOKAT [17]
She had to sell 20 T-shirts
The profit plus the rent fee is $40. Then divide it by the T-shirt price $2. Which equals $20.
6 0
3 years ago
Victor is ordering pizzas for a party. He would like to have 1/4 of a pizza for each guest. He can only order whole pizzas, not
sertanlavr [38]
7 pizzas, because you would divide 27 by 4 and get 6.75 and then round it up to 7.

Hope this helped :)
5 0
3 years ago
Read 2 more answers
Find the range of the product. <br> 34 x 47
stepladder [879]
34 x 47 = 1598 so that’s the range
7 0
3 years ago
Find m∠A given ΔABC where a=4, b=6, c=3.
igomit [66]
For this question, we're going to use the law of cosines.
The law of cosines is the following equation:

a^2=b^2+c^2-2(b)(c) \cos(A)

We know the values of a, b, and c. We want to find the measure of angle A.
a=4
b=6
c=3

Now, plug in these values into the equation.

4^2=6^2+3^2-2(3)(6) \cos(A)
16=45-36 \cos(A)

Add both sides by 36 \cos(A) and subtract both sides by 16

36 \cos(A)=29

Divide both sides by 36

\cos(A)= \dfrac{29}{36}

Take the inverse cosine, or arc cosine, of both sides.
Using a calculator, you'll get the following result.

A \approx 36.3^O

The measure of angle A should be 36.3 degrees. Hope this helps! :)
4 0
3 years ago
Kevin has $100 in a savings account that earns 10% annually. The interest is not compounded. How much will he have in 2 years?
Kisachek [45]
He will have 220 that is how much he will have
5 0
2 years ago
Other questions:
  • P;EASE HELP!!!!!  Consider the leading term of the polynomial function. What is the end behavior of the graph? Describe the end
    11·1 answer
  • The mystery first name of a student in the class does not begin with A, B, C, D, E, or F. the names first letter comes before S,
    11·2 answers
  • What is the answer to 6c+14=4+4c
    12·2 answers
  • Given the points (3, 2) and (6, 4), which of the following are true about the line passing through these points?
    12·2 answers
  • Certified checks are not guaranteed by your certified signature.<br><br> True<br><br> False
    6·2 answers
  • A trapezoid has a bases 15.5 cm and 22.5 cm. The area of the trapezoid is 361 m². What is the height of the trapezoid?
    8·2 answers
  • The perimeter of a rectangle is 80ft.and the length is 21ft the width of the rectangle is
    11·1 answer
  • What is 5 times 7 minus 279 plus 3​
    5·2 answers
  • Let f(x) = 8x - 7.<br> What is (4)? <br>A.39<br>B.25<br>C.32<br>D.36​
    6·1 answer
  • HELP!! <br><br> Which is the correct label of the Parallel lines?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!