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
How many deciliter are equivalent to 5 cups
notsponge [240]

Answer:

11.8294Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The equation for the circle is (x-2)^2 + (y-1)^2 = 4<br><br> True<br> or<br> False???
jasenka [17]
True because the center is (2,1) and radius is 2
8 0
3 years ago
Read 2 more answers
Use the function y=3/2x+3 to complete the table of values
anastassius [24]

Answer:

Please check the explanation.

Step-by-step explanation:

Given the function

Putting all the values of y=9, 6, 0, and -3 to complete the table

FOR y=9

putting y=9

switch sides

subtract 3 from both sides

Hence,

when y=9, x=4

FOR y=6

putting y=6

switch sides

subtract 3 from both sides

Hence,

when y=6, x=2

FOR y=0

putting y=0

switch sides

subtract 3 from both sides

Hence,

when y=0, x=-2

FOR y=-3

putting y=-3

switch sides

subtract 3 from both sides

Hence,

when y=-3, x=-4

Hence, the table becomes:

x                     y

9                    4

6                    2

0                    -2

-3                   -4

8 0
3 years ago
a triangle has an area of 54 m2 and a height of 9m how long is the base of the triangle entered your answer in the box
Delvig [45]
Answer:
base of the triangle = 12 m

Explanation:
Area of the triangle = 1/2 * base * height
We are given that:
area = 54 m^2
height = 9 m

Substitute in the equation to get the base as follows:
Area of the triangle = 1/2 * base * height
54 = 1/2 * base * 9
108 = 9*base
base = 12 m

Hope this helps :)
7 0
3 years ago
Read 2 more answers
What has a one dimensional and have infinite length
lina2011 [118]
A line. It goes in both directions forever
3 0
3 years ago
Other questions:
  • Which rate is a unit rate?
    11·2 answers
  • What is x in this problem 12 x 4x
    6·2 answers
  • the area of one circle is 9 times as great as the area of another. If the radius of smaller circle is 3, find the radius of larg
    12·1 answer
  • What is a subtraction equation with a difference of 54.57?
    11·1 answer
  • Find the difference 828,738 and 395,791
    6·1 answer
  • To make one ham sandwich, tina uses one bread roll and two ham slices
    13·1 answer
  • The bookstore is overstocked with old fantasy novels. It needs to get rid of the novels to make room for newly published fantasy
    5·1 answer
  • How many miles you can cover in 65 minutes
    15·2 answers
  • Please help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! will give brainliest!!!!!!
    9·2 answers
  • Evaluate (−3a + 4b)32c − 1 when a = 4, b = 2, and c = 3. <br> Plz Help Its a quiz
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!