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
Lana71 [14]
3 years ago
13

a teacher asked 3 pupils to choose any 2 digit number square it and then find the remainder after dividing the result by 7. Dori

s got 6 Marie got 4, Horace got 3. Two of the pupils made a mistake. Why?
Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
4 0
First write out all the two digit square numbers

4² = 16
5² = 25
6² = 36
7² = 49
8² = 64
9² = 81

Next divide all of them by 7

16/7 = 2 2/7 or 2 and 2 remainders
25/7 = 3 4/7 or 3 and 4 remainders
36/7 = 5 1/7 or 5 and 1 remainder 
49/7 = 7
64/7 = 9 1/7 or 9 and 1 remainder
81/7 = 11 4/7 or 11 and 4 remainders

This tells us that the only possible remainders for a two digit square number divided by 7 are 1, 2 and 4
If Doris got 6 and Horace got 3, they must have made a mistake.
You might be interested in
100.5 divided by 1.5
wariber [46]
The answer to 100.5 divided by 1.5 is 67
5 0
3 years ago
I don't know what the answer is.
Ksenya-84 [330]

Answer:

C.) 87

Step-by-step explanation:

if you look at it from the other side, its counting down from 91 from the left.

6 0
3 years ago
Read 2 more answers
Two sides of a parallelogram are 65 feet and 87 feet. The measure of the angle between these sides is 52°. Find the area of the
telo118 [61]

Answer:

Area of the parallelogram is approximately 4,456.2 square feet

Step-by-step explanation:

The lengths of the sides of the parallelogram are 65 feet and 87 feet

The measure of the angle between the sides, Y = 52°

The formula for finding the area of a parallelogram is given as follows;

Area of a parallelogram = A·B·sin(Y)

Where;

'A' and 'B' are the length of the parallel sides and 'Y' is the measure of the angle between them

Let 'A' and 'B' represent the 65 feet and the 87 feet respectively, we get;

Area of the parallelogram = 65 ft. × 87 ft. × sin(52°) ≈ 4,456.2 ft.²

3 0
3 years ago
Tom's hair was originally 4 inches long. He asked her hairdresser to cut 1 ⁄3of it off. How many inches did he have cut off?
lord [1]

Answer:

About 3.67

Step-by-step explanation:

1 - 1/3 = 3.66666666667

And 3.66666666667 ≈ 3.67

8 0
3 years ago
During 2022, its first year of operations as a delivery service, Flounder Corp. entered into the following transactions.
polet [3.4K]

Answer:

wait 2022?!?!?!!?

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Iana started to evaluate the function f(x) = 2x2 – 3x + 7 for the input value 2.
    5·2 answers
  • Decimal equivalent 9 1/3
    8·2 answers
  • FINANCE<br><br> please answer question six with full working out ty :)
    10·1 answer
  • What is this percent of change 40;72
    7·1 answer
  • Please help, multiple choice
    15·2 answers
  • The Mountain Spring Water Company is moving their backup supply of drinking water to a different site. Each tank weighs accordin
    14·1 answer
  • Find out whether the angles are adjacent or vertical. Then find the value of x.
    14·1 answer
  • What is the equation of the line in slop intercept form
    10·1 answer
  • Sorry for the blurry picture anyone can help?? That’ll be nice
    8·2 answers
  • What does the excerpt reveal about Krebs? He fought valiantly while at war overseas. He is happy to be home with his friends and
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!