Paul is solving an equation on the bottom of a page. His pen breaks, and ink spills on the corner of the page where the equation
is written, as shown.
Paul knows only one number or expression is covered by the ink stain, and he knows that the equation has a solution of 6. What must be the covered number or expression?
A. 3
B. 3x
C. 6x
D. 6
Paul knows only one number or expression is covered by the ink stain, and he knows that the equation has a solution of 6. What must be the covered number or expression?
A. 3
B. 3x
C. 6x
D. 6
1 answer:
Answer: Option B
Step-by-step explanation:
If the solution is 6 then it means that x=6.
Let's call the missing number <em>y</em>
<em> </em>Substitute x=6 and <em>y</em> into the equation and solve for <em>y: </em>
The options does not show 18, but the option B shows 3x, then if x=6:
The answer is the option B
You might be interested in
Answer:
The amount of markup is 88 dollars.
Step-by-step explanation:
Given that the whole sale price of bicycle is: $400
Mark up is the profit that the seller of the product makes after selling the product more in price more than its cost or buying price.
Given that mark up percentage is 22%
It can be written mathematically as:
Hence,
The amount of markup is 88 dollars.
Answer:
63.4
Step-by-step explanation:
The triangle is right angled , so :
tan S = UT/ST
tan S = 2/1
tan S = 2
S = 2
S = 63.4
I assume you are being asked to solve these equations. Since there wasn't an explanation as to how you are expected to solve them, I chose to demonstrate how to use a calculator matrix function. You can find matrix calculators online. My instructions are for a TI-84
Push the blue 2nd button then push x^-1 button (it says matrix above this button in blue)
Arrow over to edit to change the dimensions of the matrix and to put in your values. You have 3 equations (3 rows) and 4 terms (4 columns) so you put a 3x4 in for the dimension and the coefficients (see images).
You use the rref option in the math column in matrix to calculate the answer.
The numbers at the end are the solutions. x = -4, y = 2, z = -1
Push the blue 2nd button then push x^-1 button (it says matrix above this button in blue)
Arrow over to edit to change the dimensions of the matrix and to put in your values. You have 3 equations (3 rows) and 4 terms (4 columns) so you put a 3x4 in for the dimension and the coefficients (see images).
You use the rref option in the math column in matrix to calculate the answer.
The numbers at the end are the solutions. x = -4, y = 2, z = -1