Answer:
-27
Step-by-step explanation:
9(4x – 15)
Substitute 3 for x
9((4)(3) - 15)
Multiply (4)(3) = 12
9 ( 12 - 15 )
Subtract 12 - 15 = -3
9(-3)
Multiply 9(-3) = -27
I didn't round by the answer would be 115.575042 miles per second.
The value of x is less than or equal to 2.25.
<h2>Linear system</h2>
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.
<h3>Simplification</h3>
Simplification is to make something easier to do or understand and to make something less complicated.
Given
The expression is 47.75 + x ≤ 50.
<h3>To find</h3>
The value of x.
<h3>How to find the value of x?</h3>
The expression is 47.75 + x ≤ 50.
On simplifying,
47.75 + x ≤ 50
x ≤ 50 - 47.75
x ≤ 2.25
Thus, the value of x is less than or equal to 2.25.
More about the linear system link is given below.
brainly.com/question/20379472
Quadratic Trinomial
2nd degree and three terms
