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3 years ago

I don’t understand this

Mathematics

2 answers:

SashulF [63]3 years ago

7 0

Answer:

9 to the 5th power

Step-by-

krok68 [10]3 years ago

7 0

Answer:

n=5 I think...

Step-by-step explanation:

9^7/9^n = 9^2

Multiply by (n)

9^7-n = 9^2

7-n=2

7-n=2: n=5

-n=-5

Simplify:

n=5

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What is 10 times 10. ?

Slav-nsk [51]

Answer:

=100

Step-by-step explanation:

10×10= 100

Simpler version- 1×1= 1 and you just add the two 0's to the 1, that gives you 100

8 0

3 years ago

Read 2 more answers

Add the fractions and show me step by step on how to do it <br><br> 10/16 + 4/8

lana66690 [7]

10/16=5/8

5+4= 9

9/8

9/8= 1 1/8

1 and 1/8

6 0

3 years ago

1. Let L be a list of numbers in non-decreasing order, and x be a given number. Describe an algorithm that counts the number of

e-lub [12.9K]

Answer:

Algorithm

Start

Int n // To represent the number of array

Input n

Int countsearch = 0

float search

Float [] numbers // To represent an array of non decreasing number

// Input array elements but first Initialise a counter element

Int count = 0, digit

// Check if element to be inserted is the first element

If(count == 0) Then

Input numbers[count]

Else

lbl: Input digit

If(digit > numbers[count-1]) then

numbers[count] = digit

Else

Output "Number must be greater than the previous number"

Goto lbl

Endif

count = count + 1

While(count<n)

count = 0

// Input element to count

input search

// Begin searching and counting

if(numbers [count] == search)

countsearch = countsearch+1;

End if

While (count < n)

Output count

Program to illustrate the above

// Written in C++

// Comments are used for explanatory purpose

#include<iostream>

using namespace std;

int main()

{

// Variable declaration

float [] numbers;

int n, count;

float num, searchdigit;

cout<<"Number of array elements: ";

cin>> n;

// Enter array element

for(int I = 0; I<n;I++)

{

if(I == 0)

{

cin>>numbers [0]

}

else

{

lbl: cin>>num;

if(num >= numbers [I])

{

numbers [I] = num;

}

else

{

goto lbl;

}

// Search for a particular number

int search;

cin>>searchdigit;

for(int I = 0; I<n; I++)

{

if(numbers[I] == searchdigit

search++

}

// Print result

cout<<search;

return 0;

}

8 0

3 years ago

What is 23 over 6 as a mixed fraction?

Ulleksa [173]

23/6

Now how many times does 6 go in 23 ???
The answer is 3 times

So, Remaining
= 23 - (6×3)
= 23- 18
= 5

So, the mixed fraction would be
= 3 5/6

3 0

3 years ago

Read 2 more answers

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 16 miles per hou

Verizon [17]

We'll use variables to represent the speeds of the eastbound and westbound trains.

x will represent the speed of the eastbound train.
y will represent the speed of the westbound train.

The eastbound train is 16 mph faster than the westbound train. An equation can be made from this:

$x - y = 16$

Subtraction is used, because it represents the difference in distances between the two trains if they travel the same direction.

After 4 hours, the trains are 800 miles apart. An equation can be made from this:

$4x + 4y = 800$

Addition is used, because the trains are heading in opposite directions, which means their distances from the starting point are added together.

Set the two equations up vertically:

$x - y = 16$
$4x + 4y = 800$

We will use elimination to solve for x.

Multiply the entire first equation by 4 so that the coefficients for y will be opposite numbers:

$(x - y = 16) \times 4 = 4x - 4y = 64$

$4x - 4y = 64$
$4x + 4y = 800$

Combine the two equations together to cancel out y:

$8x = 864$

Divide both sides by 8 to get x by itself:

$x = 108$

The speed of the eastbound train is 108 mph.

5 0

3 years ago