Answer:
7/200
Step-by-step explanation:
3.5% = 3.5/100 = (3.5/100)×(2/2) = 7/200
_____
The % symbol is a shorthand way to write "/100", so 3.5% = 3.5/100.
Answer:
Student A: Testing plant growth in different types of soils
Student B: Comparing the water level in a lake during different times of the year
Step-by-step explanation:
Student A because it requires a hypothesis
Student B because it requires a hypothesis Student
A because it can be done in natural settings
Student B because it can be done in natural settings
Answer:
The answer to your question is: ∠4 = 140°
Step-by-step explanation:
If there are two parallel lines cut by a transversal line 8 angles are formed.
These angles are classified as corresponding angles, alternate exterior angles, alternate interior angles and same-side angles.
Alternate exterior angles measure the same. Also alternate interior angles measure the same.
Same-side angles are supplementary angles, that means that their sum gives 180°.
Finally corresponding angles measure the same.
In the figure we notice that angles 6 and 8 are same side angles, so:
∠6 + ∠8 = 180
and ∠6 = 40° 40 + ∠8 = 180
∠8 = 180 - 40
∠8 = 140°
and ∠4 and ∠8 are corresponding angles so,
∠4 = ∠8 = 140°
Consider the bottom most rectangle.
Its length = 5 - 2 = 3 units
Its width = 3 - 1 = 2 units
So, its area = 3(2) = 6 square units.
Consider the middle rectangle.
Its length = 2 - 1 = 1 unit
Its width = 4 - 2 = 2 units
So, its area = 1(2) = 2 square units.
Finally, consider the top rectangle.
Its length = 6 - 1 = 5 units
Its width = 6 - 4 = 2 units
Its area = 5(2) = 10 square units.
Hence, total area = 6 + 2 + 10 = 18 square units. Correct option is C.
Answer: No
Step-by-step explanation:
Three of the other angles are 45°. The other four are 180° - 45°, which is not 55°. At the intersection of two lines, opposite angles are equal and adjacent angles are complementary, so two adjacent angles add to 180°. Adding a parallel line gives four more angles identical to the first four.
