Rational numbers are decimals that either terminate or repeat, and can be written as fractions, in which case A and E are rational
The value of x is 126.87° and the value of y is 53°.
<h3>What is an obtuse and an acute angle?</h3>
An obtuse angle is an angle that is greater than 90° but lesser than 180° while an acute angle is an angle between 0-90°.
From the given information:
sin x° = 0.8
x = sin⁻¹ (0.8)
x = 53.13°
x + 53.1° = 180°
x = 180° -53.13°
x = 126.87°
If cos 127° = -cos y°,
-cos y = -0.6018
cos y = 0.6018
y = cos⁻¹ (0.6018)
y = 53°
Learn more about the determination of obtuse and acute angles here:
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30% of 250 can be written as 0.3 * 250:
0.3(250) = 75
30% of 250 is 75. Is this what you mean by "compute with percents?"
Given:
First term of an arithmetic sequence is 2.
Sum of first 15 terms = 292.5
To find:
The common difference.
Solution:
We have,
First term:
Sum of first 15 terms:
The formula of sum of first n terms of an AP is
Where, a is first term and d is common difference.
Putting , n=15 and a=2 in the above formula, we get
Divide both sides by 15.
Dividing both sides by 7, we get
Therefore, the common difference is 2.5.
<u>Explanation:</u>
Some reasons why organic farming is more expensive than conventional farming is that:
- they require greater labor input,
- the quantity produced is lower which results in a higher cost per unit.
- it cost more to meet these higher standards.
Many agriculturalists believe a farm must be run for at least 3 years organically before its products can be labeled as "organic."
The benefits of crop rotation includes:
- it reduces soil erosion,
- improves soil fertility,
- it reduces the presence of pests and diseases.