7x+15=38
7x=38-15
7x=23
x=23/7
Answer:
a. 6.93 b. 5 c. 6.72 d. 3.46
Step-by-step explanation:
a. √4^2- 4(4)(-2)
Evaluate the power
√16-4×4(-2)
Multiply
√16-16(-2) = √16-(-32) = √16+32 Since 2 negatives equal a positive.
Add
√48
Find square root
√48= 6.92820323028-- rounded-- 6.93
b. √1^2-4(1)(-6)
Evaluate the power
√1-4(1)(-6)
Multiply
√1-(-24) = √1+24 Since 2 negatives equal a positive.
Add
√25
Find the square root
√25=5
c. √1^2-4(1)(-11)
Evaluate the power
√1-4(1)(-11)
Multiply
√1-(-44) = √1+44 Since 2 negative equal a positive.
Add
√45
Find the square root
√45= 6.7082039325-- rounded-- 6.72
d. √6^2-4(3)(2)
Evaluate the power
√36-4(3)(2)
Multiply
√36-24
Subtract
√12
Find the square root
√12= 3.46410161514-- rounded-- 3.46
11.5/100 (320)
184/5 (decimal:36.8)
hope this helps!
Answer:
The equivalent expressions are:
Step-by-step explanation:
Given equation for finding area of a trapezoid:
where 
represents area, 
represents height and 
represents the base lengths of the trapezoid.
Evaluating by rearranging the equation to find an equivalent equation.
Multiplying both sides by 2.
Dividing both sides by 
Evaluating 
by rearranging the equation to find an equivalent equation.
Multiplying both sides by 2.
Dividing both sides by
Subtracting both sides by 
What's the question you need to understand
