Answer:
x = -0.76
Step-by-step explanation:
-7x + 29 = 6 (8 + 3x)
-7x + 29 = 48 + 18x
-7x = 48-29 + 18x
-7x = 19 + 18x
-7x-18x = 19
-25x = 19
x = 19/-25
x = -0.76
Answer:
Answer is -5°C.
Step-by-step explanation:
Initial temperature = 3°C
First decrease in temperature = 5°C
Second decrease in temperature = 3°C
Balloon ascend = 900 ft
Total change in temperature = 3-5-3 = -5
Thus final temperature = -5°C
Answer:
x=-1
Step-by-step explanation:
Answer: Angles A and B are complementary angles
If Sin A ≈ 0.766 then Cos B ≈ 0.766.
If Cos B ≈ 0.766 then Sin A ≈ 0.766
Step-by-step explanation: In any given right angled triangle, one angle measures 90 degrees while the addition of the other two angles equals to 90 degrees. Hence if angle C is given as 90 degrees, then angles A and B added together equals 90 degrees (complementary angles equal 90 degrees).
Also, Sin A cannot be the same value as Sin B, since angle A and angle B are not equal in measurement. However, being complementary, the Sin of angle A equals the Cos of angle B.
If Sin A ≈ 0.766, then angle A ≈ 50 degrees
That makes angle B equal to 40 degrees. The Cos of B ≈ 0.766
Therefore if Sin A ≈ 0.766, then Cos B ≈ 0.766
If Cos B ≈ 0.766 then Sin A ≈ 0.766 are both correct
