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Aleonysh [2.5K]
2 years ago
7

Eighty minus forty five plus five plus two

Mathematics
1 answer:
kvv77 [185]2 years ago
8 0
80-45+5+2=42

Your answer is 42
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Given the similar triangles at the left, identify the scale factor.<br><br> PLEASE HELPPPPPPPPPPPP
cricket20 [7]
The scale factor is 1/3.

To find this scale factor, choose a set of sides to compare lengths. For example, taking the left sides of the triangles, which is 9 and 3. 9 is 3 times bigger than the triangle on the right, so that gives us the scale factor of 1/3.
4 0
3 years ago
Write a program that mimics a calculator. The program should take as input: The first integer The second integer The operation t
SashulF [63]

It takes value from a user and then user the operation of (+,-,*/).

i used c++ programming language to solve this program:

#include<iostream>

using namespace std;

int main() {

int var1, var2;

char operation;

cout << "Enter the first number : ";

cin >> var1;

cout << endl;

cout <<"Enter the operation to be perfomed : ";

cin >> operation;

cout << endl;

cout << "Enter the second nuber : ";

cin >> var2;

cout << endl;

bool right_input = false;

if (operation == '+') {

cout << var1 << " " << operation << " " << var2 << " = " << (var1 + var2);

right_input = true;

}

if (operation == '-') {

cout << var1 << " " << operation << " " << var2 << " = " << (var1 - var2);

right_input = true;

}

if (operation == '*') {

cout << var1 << " " << operation << " " << var2 << " = " << (var1 * var2);

right_input = true;

}

if (operation == '/' && var2 != 0) {

cout << var1 << " " << operation << " " << var2 << " = " << (var1 - var2);

right_input = true;

}

if (operation == '/' && var2 == 0) {

cout << "Error. Division by zero.";

right_input = true;

}

if (!right_input) {

cout << var1 << " " << operation << " " << var2 << " = " << "Error;";

cout << "Invalid Operation!";

}

cout << endl;

system("pause");

return 0;

}

7 0
2 years ago
How many perfect squares are divisors of 10
gregori [183]

Answer:

0

Step-by-step explanation:

1^2=1

2^2=4

3^2=9

We can stop here because the from here on forward they are bigger than 10 itself.

5 0
2 years ago
What is the solution for x in the equation<br> -4+5x-7=Okay 0+3x-2x
Maksim231197 [3]

Answer:

X = 2.75 or 2 3/4 in fraction form

Step-by-step explanation:

We know that the variable X has to make both equations equal.

It is really just crossing out the options.

2.75 can fit in the X variable because if 2.75 was in both equations, the answer would be the same.

So the answer is 2.75

Hope this helps! :)

૮ ・ﻌ・ა

5 0
2 years ago
Solve.<br> 2log(x+1)-log(x+3)=log1
guapka [62]

Answer: x = 1

Step-by-step explanation:

2log(x+1) - log (x+3) = log 1

log(x+1)^2 - log (x+3) = log 1

log [(x+1)^2 / (x+3)] = log 1

(x+1)^2 / (x+3) = 0

(x+1)^2 = 0

x = 1 or x = -1 (rejected, as log0 does not exist)

4 0
2 years ago
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