All the corners of a rectangle is equal to 90 degrees. So you need to set (x-1) and (2x+10) equal to 90 and then solve for x.
(x - 1) + (2x + 10) = 90
<em>Combine the like terms...
</em>3x + 9 = 90
<em>Subtract both sides by 9...
</em>3x + 9 - 9 = 90 - 9
3x = 81
<em>Divide both sides by 3...
</em><em>3x = 81
</em>(3x) / 3 = 81 / 3
x = 27
Six plus three is nine, thus the lowest answer.
Answer:
A. 0.15
B. 0.45
C. 85
Step-by-step explanation:
Given that:
Equation to represent the relation between distance, 
in miles and time 
in seconds:
<em>A. </em>
To find: The speed of airplane in miles per second.
Formula for speed is given as:
Here, we will have to find the value of 
.
Dividing the given equation by , we get:
is in miles and is in seconds.
Therefore, the answer is <em>0.15</em>.
<em>B.</em>
Distance traveled in 30 seconds.
Given that: = 30 seconds
To find: 
in miles
<em>C.</em>
The time taken to travel a distance of 12.75 miles.
Given that : 
To find: 
seconds
Answer:
C. 77x⁷ + 78x⁶ - 27x⁵
Step-by-step explanation:
Operation of functions
f(x) g(x)
f(x) • g(x) = (11x³ - 3x²)(7x⁴ + 9x³)
Simplify or expand
(11x³ - 3x²)(7x⁴ + 9x³)
Expand the expression
11x³ × 7x⁴ + 11x³ × 9x³ - 3x² × 7x⁴ - 3x² × 9x³
Multiply
77x⁷ + 99x⁶ - 21x⁶ - 27x⁵
Combine like terms
77x⁷ + 78x⁶ - 27x⁵
Hope this helps and have a nice day
