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80 percent of what number equals 40?
To find the number, you would set up the equation 0.80x = 40, where x represents the unknown number. To solve for x, you would divide both sides by 0.80 to isolate x, giving you x = 40 / 0.80. Therefore, the number is 50.
What is an equation that represents 8 less than twice a number is 42?
Let's denote the unknown number as x. The equation that represents "8 less than twice a number is 42" can be written as 2x - 8 = 42. This equation states that when you multiply the unknown number by 2 and then subtract 8 from the result, the answer is 42. To solve for x, you would add 8 to both sides of the equation and then divide by 2, giving you x = 25.
What mathematical equation matches these wordsWhat mathematical equation matches these words Four times an unknown number added to eight times an unknown number equals thirty-six?
If they are two different unknowns then it is: 4x+8y = 36 If they are the same unknowns then it is: 4x+8x = 36 in which x works out as 3
Solve a number increased by nine is fifteen?
Let x represent the unknown number and use the known numbers to solve. Set up the equation: x + 9 = 15 (subtract 9 from each side to solve for the unknown number) x = 6
Which means 30 is the product of 6 and a number b?
The equation can be written as 30 = 6b. To solve for the unknown number b, you would divide both sides of the equation by 6 to isolate b. Therefore, b = 30/6 = 5. This means that the number b is 5 in this scenario.
What is a equation in math?
x is an unknown number/fraction which needs to be solved.
Twice an unknown number?
twice an unknown number less one and one-half times the same number equals two ---- Let the unknown number be "x":: Equation: 2x - (3/2)x = 2
What is x in a math equation?
x is an unknown number/fraction which needs to be solved.
Which equation has the same unknown value as 430 5?
"430 5" is not an equation and it does not have an unknown value. So there can be no equation which has the same unknown value.
Why do you use variables such as x p or n in algebra?
Variables stand in the place of unknown numbers. For example, in the following equation, one number is unknown: 2+x=5. The x takes the place of the number that is unknown.
What is the equation for a number subtracted from -18 amounts to 156?
x - 18 = 156. The x is the unknown quantity, the rest of the equation you have. Now solve it and prove it.
What does the word root mean in maths?
In mathematics, the term "root" refers to the solution(s) of an equation. Specifically, the roots of an equation are the values that make the equation true when substituted for the variable. The number of roots depends on the degree of the equation.
How do you solve a equation using unknown variables?
You don't use unknown variables to solve an equation. The purpose of solving an equation is to find the value of the variable so that it's no longer unknown.
80 percent of what number equals 40?
To find the number, you would set up the equation 0.80x = 40, where x represents the unknown number. To solve for x, you would divide both sides by 0.80 to isolate x, giving you x = 40 / 0.80. Therefore, the number is 50.
What is a root number in an equation?
a root number is a number in which satifies the unknown value of an equation. For example: x² - 1 = 0 the root of this equation would be 1 or -1 since when multiplied by itself, they both equal 1. Therefore, 1 - 1 = 0
Y plus 4 equals 4x-2?
That equation cannot be solved since there are 2 unknown in the equation (x and y) but only 1 equation. The number of unknowns must be equal to the number of equations (for simultaneous equations)
What is an equation that represents 8 less than twice a number is 42?
Let's denote the unknown number as x. The equation that represents "8 less than twice a number is 42" can be written as 2x - 8 = 42. This equation states that when you multiply the unknown number by 2 and then subtract 8 from the result, the answer is 42. To solve for x, you would add 8 to both sides of the equation and then divide by 2, giving you x = 25.
