Answer:
53°
Step-by-step explanation:
Let m∠BCA = 'x'
Because it states that quadrilateral ABCD is a rectangle (sorry, forgot to say that in my image), that means that angles ∠ABC, ∠BCD, ∠CDA and ∠DAB are all right angles. That also means that all those angles are 90°.
Since ∠ACD is a portion of ∠BCD, (37° is a portion of 90°), and we're looking for the complement of ∠ACD, all we have to do is subtract 37° from 90°.
90 - 37 = 53
Hence, the answer is 53°
Answer:
<h3>The option D) All of the above is correct</h3><h3>The major disadvantage of crude rates is that:</h3>
- They may not allow for comparison of populations that differ
- They do not permit comparisons of populations that vary in age distribution.
- They are difficult to calculate from available data sources.
Hence options A ,B and C are correct
Step-by-step explanation:
Given that crude rate
To find the disadvantage of crude rate :
A crude rate is the number of new cases (or deaths) occurring in a specified
, it can be expressed as the number of cases per 100,000 population at risk.
<h3>The major disadvantage of crude rates is that:</h3>
- They may not allow for comparison of populations that differ
- They do not permit comparisons of populations that vary in age distribution.
- They are difficult to calculate from available data sources.
Hence options A ,B and C are correct
<h3>∴ The option D) All of the above is correct.</h3>
30 girls , 12 were selected
40 boys, 16 were selected
We can simplify these down by finding the Greatest Common Factor in both girls and boys:
30:12 .... 15:6 .... 1 : 2.5 30/12 .... 15/6 .... 2.5
40:16 .... 20:8 .... 1 : 2.5 OR 40/16 .... 20/8 .... 2.5
They are equal ratios because their most simplified ratios/fractions are equivalent
Answer:
radius = 10 units
Step-by-step explanation:
using the Pythagorean theorem:
height of triangle = 6 units
base of triangle = 16/2 = 8 units
radius² = 6² + 8² = 36 + 64 = 100
radius = √100 = 10 units