Answer:
S
ThenSn=n(a1+an)2Sn=n(a1 + an)2 , where nn is the number of terms, a1a1 is the first term and anan is the last term. The sum of the first nn terms of an arithmetic sequence is called an arithmetic series .
Step-by-step explanation:
The height of the Burnett building to the nearest foot be is 444 feet
<h3 /><h3 /><h3>What is angle of elevation and depression?</h3>
The angle from the horizontal to a point or the line of sight is measured with angles of elevation and depression.
when the points is high above the line of sight we have angle of elevation however when the line of sight is below the horizontal we have angle of depression
<u>Given data</u>
distance between the two buildings ( horizontal ) = 880 feet
angle of elevation = 8 degrees
angle of depression = 20 degrees
applying Trigonometry relations
for angle of elevation
tan 8 = h1 / 880
h1 = 123.676 feet
for angle of depression
tan 20 = h2 / 880
h2 = =880 * tan 20
h2 = 320.294
let the height of the Burnett building to the nearest foot be h
h = h1 + h2
h = 123.676 + 320.294
h = 443.97
h = 444 feet
Read more on angle of elevation and depression here: brainly.com/question/15580615
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20 boxes because 6 times 5 equals 30 so 4 times 5 is 20
Answer:
x = 4
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define</u>
x/2 + 3 = 5
<u>Step 2: Solve for </u><em><u>x</u></em>
- Subtract 3 on both sides: x/2 = 2
- Multiply 2 on both sides: x = 4
