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3 years ago

13

Write a complete program thatdeclares an integer variable,reads a value from the keyboard into that variable, andwrites to stand

ard output the square of the variable's value.besides the number, nothing else should be written to standard output.

1 answer:

ch4aika [34]3 years ago

4 0

#include

int main()
{
int num;
scanf("%d", &num);
printf("%d", num*num);
return 0;
}

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To divide 2 numbers with the same base, subtract the exponents.

ira [324]

Wait what are you asking

5 0

2 years ago

If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?

Dovator [93]

Keywords

quadratic equation, discriminant, complex roots, real roots

we know that

The formula to calculate the <u>roots</u> of the <u>quadratic equation</u> of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}}{2a}$

where

The <u>discriminant</u> of the <u>quadratic equation</u> is equal to

$b^{2}-4ac$

if $(b^{2}-4ac)> 0$ ----> the <u>quadratic equation</u> has two <u>real roots</u>

if $(b^{2}-4ac)=0$ ----> the <u>quadratic equation</u> has one <u>real root</u>

if $(b^{2}-4ac)< 0$ ----> the <u>quadratic equation</u> has two <u>complex roots</u>

in this problem we have that

the <u>discriminant</u> is equal to $-8$

so

the <u>quadratic equation</u> has two <u>complex roots</u>

therefore

the answer is the option A

There are two complex roots

5 0

3 years ago

Read 2 more answers

I need help please. Which graph shows y=⌊x⌋+2?

slavikrds [6]

Answer: Top right graph.

Step-by-step explanation:

The function ⌊x⌋ rounds the value x to the lower whole number.

for example:

⌊1.5⌋ = 1

⌊1.923⌋ = 1

⌊2.0⌋ = 2

then, the graph of ⌊x⌋ will be a black dot in the each whole number, and a horizontal segment to the right that ends with a white dot in the next whole number. Right above the white dot, we have another black dot, and it repeats.

if we have ⌊x⌋ + 2, we move te previous graph 2 units upwards, then the correct option is the top right graph.

You can check some points if you like:

f(0) = ⌊0⌋ + 2 = 2

f(0.5) = ⌊0.5⌋ + 2 = 2

f(1) = ⌊1⌋ + 2 = 3

So in x = 0 we have a black dot in y = 2, and in x = 1 we have a white dot in y = 2 and a black dot in y = 3.

5 0

2 years ago

Can 3 points be Collinear

iren2701 [21]

Three and more points are collinear

5 0

3 years ago

Read 2 more answers

Jonah drives from his car to and from work. The total length of the trip to and from work is 19.2 miles. In August, Jonah worked

natita [175]

ANSWER

The total length of the trip to and from work in August is

$403.2 \: miles$

EXPLANATION

The total length of the trip to and from work is

$19.2 \: miles$

If Jonah worked 21 days in August,

Then, the total length of the trip to and from work is
$= 21 \times 19.2 \: miles$

Change the decimal to fraction and multiply,

$= 21 \times \frac{192}{10} miles$

$= \frac{21 \times 192}{10}$

$= \frac{4032}{10} miles$

Convert back to decimal

$= 403.2 \: miles$

6 0

3 years ago