Note that
10² = 100
0.08² = 0.0064
and
101.6064 = 100 + 1.6 + 0.0064
It also happens that
1.6 = 2 • 10 • 0.08
which means
101.6064 = 100 + 1.6 + 0.0064
101.6064 = 10² + 2 • 10 • 0.08 + 0.08²
101.6064 = (10 + 0.08)²
101.6064 = 10.08²
which means
√101.6064 = 10.08
which, to one decimal place, is approximately 10.1.
Answer:
the 2nd answer
Step-by-step explanation:
it makes sense
When minusing a negative, the two negative/minus signs become a positive, so it would be a positive add another positive, giving a positive number
Answer:
Step-by-step explanation:
<u>Use the law of cosines:</u>
- cos F = (e² + g² - f²)/2eg
- cos F = (2.6² + 8.3²- 7.2²)/2(2.6)(8.3)
- = 0.5516
- ∠F = arccos 0.5516
- ∠F = 57° (rounded to the nearest degree)
Answer:
The measure of angle ∠ b is 68°.
Step-by-step explanation:
There are two angles ∠ a and ∠ b which are complementary.
Therefore, from the definition of complementary angles, we have
∠ a + ∠ b = 90°
Now, if the angle ∠ a is measured to be 22°, then
22° + ∠ b = 90°
⇒ ∠ b = 90° - 22°
⇒ ∠ b = 68°
Therefore, the measure of angle ∠ b is 68°. (Answer)
