Solve for L P = 2l + 2w if W = 7 inches and P = 42 inches
2 answers:
Answer: L = 14
Concept:
Here, we need to understand the idea of evaluation.
When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.
Solve:
<u>Given information</u>
W = 7
P = 42
<u>Given expression</u>
P = 2L + 2W
<u>Substitute values into the expression</u>
42 = 2L + 2 (7)
<u>Simplify by multiplication</u>
42 = 2L + 14
<u>Subtract 14 on both sides</u>
42 - 14 = 2L + 14 - 14
28 = 2L
<u>Divide 2 on both sides</u>
28 / 2 = 2L / 2
Hope this helps!! :)
Please let me know if you have any questions
You might be interested in
Answer:
x = - 2, x = -
Step-by-step explanation:
Given
5x² + 1 = - 13x - 5 ( add 13x - 5 to both sides )
5x² + 13x + 6 = 0
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term
product = 5 × 6 = 30 and sum = 13
The factors are 10 and 3
Use these factors to split the x- term
5x² + 10x + 3x + 6 = 0 ( factor the first/second and third/fourth terms )
5x(x + 2) + 3(x + 2) = 0 ← factor out (x + 2) from each term
(x + 2)(5x + 3) = 0
Equate each factor to zero and solve for x
x + 2 = 0 ⇒ x = - 2
5x + 3 = 0 ⇒ 5x = - 3 ⇒ x = -
Answer:
The maximum value of the equation is 1 less than the maximum value of the graph
Step-by-step explanation:
We have the equation .
We can know that this graph will have a maximum value as this is a negative parabola.
In order to find the maximum value, we can use the equation
In our given equation:
a=-1
b=4
c=-8
Now we can plug in these values to the equation
Now we can plug the x value where the maximum occurs to find the max value of the equation
This means that the maximum of this equation is -4.
The maximum of the graph is shown to be -3
This means that the maximum value of the equation is 1 less than the maximum value of the graph