Answer:
an expression is a combination of variables, operations, and symbols *it does not has an equal sign* (that would be an equation)
Step-by-step explanation:
Height of a trapezoid:
h = 5 · sin 80° = 5 · 0.985 = 4.924
x = 5 · cos 80° = 5 · 0.17365 = 0.868
7 - x = 7 - 0.868 = 6.132
By the Pythagorean theorem:
d² = 6.132² + 4.924²
d² = 37.6 + 24.25
d² = 61.85
d = √61.85
d = 7.86 ≈ 8
Answer: The length of a diagonal brace is 8 feet.
Answer:
x = -3.5
Step-by-step explanation:
First we create the equation.
Let x = the unknown number
7x-1 = 5x - 8
Add 8 to both sides
7x + 7 = 5x
Subtract 7x
7 = -2x
Divide by 2
-7/2 = x
-3.5 = x
It will take 12 truckloads to fill up one warehouse. Hope this helps.
Answer:
Step-by-step explanation:
We have to find the quotient of the division of complex numbers .
Now, we have to get the expression in simplified form.
= {Rationalizing the denominator}
=
=
{Since, i = √(- 1) i.e. square root of negative one, hence, i² = - 1}
=
= (Answer)