2 years ago

. 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]2 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

(PLZ HELP I ONLY HAVE 11 DAYS LEFT OF SCHOOL) If Wendell were to slice the doghouse with a plane parallel to the two sides throu

Yuki888 [10]

a shape of a right triangle

8 0

2 years ago

4. The numencal coefficient in 3xy is A-3 В 2 D ху Ску

BabaBlast [244]

Answer:

Step-by-step explanation:

Because in 3xy 3 is the numerical coefficient

3 0

2 years ago

Read 2 more answers

Choose the triangle that seems to be congruent to △AEC. △BFC △ABD △EFD

Mashutka [201]

Answer. Triangle ABD

Explanation: There’s no thinking in this, because you can use your eyes to look for the answer. Not all questions will have this type of question. But they do seem pretty similar to me.

6 0

2 years ago

Latex-free gloves can be purchased in a box of 100 for $44.95 or a box of 50 for $23.50.

d1i1m1o1n [39]

For box of 100 gloves, each glove = 44.95/100 = $0.4495

For box of 50 gloves, each glove = 23.50/50 = $0.47

Thus the box of 100 gloves is good to buy than the box of 50 gloves.

6 0

2 years ago

Read 2 more answers

What is the sum of the interior angles

galben [10]

Answer:

The sum of the interior angle is 108°

Step-by-step explanation:

To find the sum of the interior angle, you need this equation:

$\frac{180(n-2)}{n}$ (The variable $n$ represents the number of sides does a shape have).

-Count the sides of the shape:

The following polygon shown, has 5 sides.

-After you have the number of sides of the polygon, use the number of sides for the equation and it will be written as:

$\frac{180(5-2)}{5}$

-Then, you solve:

$\frac{180(5-2)}{5}$

$\frac{180(3)}{5}$

$\frac{540}{5} = 108\textdegree$

So, the sum of the interior angle is $108\textdegree$ .

7 0

3 years ago