Step-by-step explanation:
the angle CDB is the supplementary angle to 9x+10 (angle ADC).
that means they stand together for 180°. as all angles around a single point on one side of a line are together always 180°.
and then, the sum of all angles in a triangle is always 180°.
so,
CDB + (4x + 10) + 50 = 180
CDB = 180 - (9x + 10) = 180 - 9x - 19 = 170 - 9x
therefore,
(170 - 9x) + (4x + 10) + 50 = 180
170 - 9x + 4x + 10 + 50 = 180
-5x = -50
5x = 50
x = 10
angle CDB = 170 - 9x = 170 - 90 = 80°
A=1 b=8 c=8
h = [-8 +-sq root(64 - 4*1*8)] / 2
h = [-8 +-sq root(32)] / 2
h1 = -4 +
<span>
<span>
<span>
2.8284271247
</span>
</span>
</span>
h1 =
<span>
<span>
<span>
-1.1715728753
</span>
</span>
</span>
h2 = -4 -
<span>
<span>
2.8284271247
</span></span>h2 = -<span> 6.8284271247
</span>
Answer:
Rational Numbers: 1.1625, 5.15603418923, and -11/151
Irrational Numbers: √256, √141, and ∛25
Step-by-step explanation:
Rational Numbers are numbers that are decimals, fractions, and whole numbers.
Irrational Numbers are numbers that have square roots and cube roots.
Answer:
Hi:) Do you have a specific question on something or just some tips for those desired good grades?
Step-by-step explanation:
Check the pictures below.
make sure your calculator is in Degree mode, since the angles are in degrees.
