2squaredx3x5 is the prime factorization
Step-by-step explanation:
we have 8 equally "heavy" batches.
one weighs 3.9 × 10^-10 g
so, the total sample then weighed
8 × 3.9 × 10^-10 = 31.2 × 10^-10 = 3.12 × 10^-9 g
There are 2,000 fifties in one hundred thousand
BC is 10 units and AC is
units
Step-by-step explanation:
Let us revise the sine rule
In ΔABC:
![\frac{AB}{sin(C)}=\frac{BC}{sin(A)}=\frac{AC}{sin(B)}](https://tex.z-dn.net/?f=%5Cfrac%7BAB%7D%7Bsin%28C%29%7D%3D%5Cfrac%7BBC%7D%7Bsin%28A%29%7D%3D%5Cfrac%7BAC%7D%7Bsin%28B%29%7D)
- AB is opposite to ∠C
- BC is opposite to ∠A
- AC is opposite to ∠B
Let us use this rule to solve the problem
In ΔABC:
∵ m∠A = 45°
∵ m∠C = 30°
- The sum of measures of the interior angles of a triangle is 180°
∵ m∠A + m∠B + m∠C = 180
∴ 45 + m∠B + 30 = 180
- Add the like terms
∴ m∠B + 75 = 180
- Subtract 75 from both sides
∴ m∠B = 105°
∵ ![\frac{AB}{sin(C)}=\frac{BC}{sin(A)}](https://tex.z-dn.net/?f=%5Cfrac%7BAB%7D%7Bsin%28C%29%7D%3D%5Cfrac%7BBC%7D%7Bsin%28A%29%7D)
∵ AB = ![5\sqrt{2}](https://tex.z-dn.net/?f=5%5Csqrt%7B2%7D)
- Substitute AB and the 3 angles in the rule above
∴ ![\frac{5\sqrt{2}}{sin(30)}=\frac{BC}{sin(45)}](https://tex.z-dn.net/?f=%5Cfrac%7B5%5Csqrt%7B2%7D%7D%7Bsin%2830%29%7D%3D%5Cfrac%7BBC%7D%7Bsin%2845%29%7D)
- By using cross multiplication
∴ (BC) × sin(30) =
× sin(45)
∵ sin(30) = 0.5 and sin(45) = ![\frac{1}{\sqrt{2}}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B%5Csqrt%7B2%7D%7D)
∴ 0.5 (BC) = 5
- Divide both sides by 0.5
∴ BC = 10 units
∵ ![\frac{AB}{sin(C)}=\frac{AC}{sin(B)}](https://tex.z-dn.net/?f=%5Cfrac%7BAB%7D%7Bsin%28C%29%7D%3D%5Cfrac%7BAC%7D%7Bsin%28B%29%7D)
- Substitute AB and the 3 angles in the rule above
∴ ![\frac{5\sqrt{2}}{sin(30)}=\frac{AC}{sin(105)}](https://tex.z-dn.net/?f=%5Cfrac%7B5%5Csqrt%7B2%7D%7D%7Bsin%2830%29%7D%3D%5Cfrac%7BAC%7D%7Bsin%28105%29%7D)
- By using cross multiplication
∴ (AC) × sin(30) =
× sin(105)
∵ sin(105) = ![\frac{\sqrt{6}+\sqrt{2}}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B6%7D%2B%5Csqrt%7B2%7D%7D%7B4%7D)
∴ 0.5 (AC) = ![\frac{5+5\sqrt{3}}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B5%2B5%5Csqrt%7B3%7D%7D%7B2%7D)
- Divide both sides by 0.5
∴ AC =
units
BC is 10 units and AC is
units
Learn more:
You can learn more about the sine rule in brainly.com/question/12985572
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