Answer:
x=7
Step-by-step explanation:
Step 1: Subtract 4x from both sides.
x+30−4x=4x+9−4x
−3x+30=9
Step 2: Subtract 30 from both sides.
−3x+30−30=9−30
−3x=−21
Step 3: Divide both sides by -3.
−3x
−3
=
−21
−3
<u><em>The sides of a rhombus are all congruent (the same length.)</em></u>
Answer:
4.5
Step-by-step explanation:
To find the hypotenuse of a right triangle, we use Pythagorean's Theorem which states that
. Plugging in the values of the two legs given, we get
. We can take the square root of each side and get that
.
Answer:
Step-by-step explanation:
c
S(20)=
5*20-2=100-2=98
Answer:
11.327
Step-by-step explanation:
Just set it equal to zero and solve using the quadratic equation.