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4 years ago

Solve the equation 4*e+2=1 (mod5)

Mathematics

1 answer:

otez555 [7]4 years ago

4 0

Here's a way to do it.

Let 4e +2 = 5n +1 . . . . . . for some integer n

Then e = (5n -1)/4 = n + (n -1)/4

We want (n-1)/4 to be an integer, so let it be integer m.

... m = (n -1)/4

... 4m = n -1

... 4m +1 = n

Substituting this into our expression for e gives

... e = (5(4m+1) -1)/4 = (20m +4)/4 = 5m +1

e = 5m+1 for any integer m

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andrew11 [14]

The answer is D the last one

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3 years ago

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Fourth and fifth graders planted trees alongside the road. The distance between two trees is 5 meters how many trees did they pl

Anastaziya [24]

$\mathcal{PROCESS:}$

$\mathbb {DATA \ \ TO\ \ TAKE \ \ INTO \ \ ACCOUNT$

<em>The distance between two trees is 5 meters.</em>
<em>the distance between the first and last trees is 200 meters</em>

<em />

<em>To know the result of trees we will do the following steps...</em>

<em>We will </em><em>divide the distance from the first to the last tree by 5</em><em>, and with this we would have the result:</em>

$200/5=?$

<h3>Result:</h3>

40 trees were planted

<h2><u><em>ATT- Brook2007s</em></u></h2>

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3 years ago

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Which of the following segments is a radius of OA?

AysviL [449]

Answer:

A is the correct answer

Step-by-step explanation:

The radius is half of the diameter. So it has to start from point 'A'. The only choice using point A is TA, so choice A is the correct choice

Other radii could be AG, AP, or AR, but none of those choices are listed.

4 0

3 years ago

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What is the contrapositive of the following conditional?

rjkz [21]

Answer: B. If a student is not over 6 feet tall, then the student does not play basketball.

Step-by-step explanation:

The contrapositive of a conditional statement of the form "If p then q" is "If not q then not p. The contrapositive is logically equivalent to conditional statement.

Here the given conditional statement is "If a student plays basketball, then the student is over 6 feet tall."

Thus the contrapositive of the conditional statement will be "If a student is not over 6 feet tall, then the student does not play basketbal"

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3 years ago

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please help with maths work

prisoha [69]

Given:

In a right angle triangle ABC, $\angle B=90^\circ,x=8.7\ m$ , and $\theta = 45^\circ$

To find:

The value of AC.

Solution:

In a right angle triangle,

$\cos \theta =\dfrac{Adjacent}{Hypotenuse}$

$\cos \theta =\dfrac{BC}{AC}$

$\cos (45^\circ) =\dfrac{8.7}{AC}$

$\dfrac{1}{\sqrt{2}}=\dfrac{8.7}{AC}$

On cross multiplication, we get

$AC=8.7\times \sqrt{2}$

$AC=12.30365799$

$AC\approx 12.304$

Therefore, the measure of AC is 12.304 m.

3 0

3 years ago