Basic Calculation, So
Work With Out A Calculator:
2.1 × 10 = 21
1.488 ÷ 2.1 = (1.488 × 10) ÷ (2.1 × 10)
14.88 ÷ 21 = 0.7085
0.7 Rounded
9 students in the class play in the school band.
30% of 30
Well, when doing a percentage you first turn the percentage into a decimal (move the % two units to the left). So 30% = 0.3
In math, the word of means multiplication, so: 0.3 x 30
Which equal 9.
You can also turn the percentage into a fraction, it's really up to preference.
30/100 of 30 = 3/10 of 30 = 3/10 x 30 = 3/10 x 30/1 = 9/1 or 9
J. 5a + 8 I think
I just added everything together
Answer:
Step-by-step explanation:
You need to draw a right triangle as the one attached, where is the angle of elevation from the fire to the top of the fire tower.
You need to use the Inverse trigonometric function Arctangent:
Observe the triangle. You can identify that:
Then, you can substitute values:
Finally, evaluating, you get that the angle of elevation from the fire to the top of the fire tower is the following:
Rounded to the the nearest tenth of a degree: