This is a tricky question that Reina and Sam are multiplying (84)5 (73)9and their work are (84)5 (73)9 = 84 + 573 + 9 = 89712 Reina's(84)5 (73)9 = 84⋅573⋅9 = 820727 Sam'sActually they are doing or multiplying using exponents.
Reina’s work (8⁴)₅(7³)⁹=8⁴⁺⁵+ 7³⁺⁹= 8⁹ 7¹²This is incorrect because she added exponents instead of multiplying exponents
Sams work (8⁴)⁵ (7³)⁹=8⁴ˣ⁵ 7³ˣ⁹= 8²⁰ 7²⁷This is correct because Sam multiplied exponents correctly
Exponents are multiplied not added.
Answer:
A
Step-by-step explanation:
its the only negative whilst others are positive
Answer:
2.1
Step-by-step explanation:
The measure of angle B is 
°
Step-by-step explanation:
Using law of sines ∠B can be found using,
where b,c denotes the side and B,C denotes the angle.
Also, it is given that 
, 
and ∠C=51°.
To find ∠B, let us substitute the values in this formula, we get,
Multiplying both sides by 10, we get,
Taking 
on both sides,
Rounding it off to the nearest degree,we get,
Thus, the measure of angle B is °
Answer:12
Step-by-step explanation:
