Answer:
The perimeter of △DEF 43
Step-by-step explanation:
Sin A/ a = Sin B / b = Sin C/ c
sin D/ d =
Sin E / e = sin F /f
sin 52/ e = sin 90 / 18
e = 18 x sin 52 / sin 90
e = 14.184 /1
e = 14.2
From phythagoras theorem ,
/hyp/² = /opp/² + /adj/²
18² = 14.2² + /adj/²
/adj/²= 18² - 14.2²
/adj/² = 324 + 201.64
/adj/² = 119.51
/adj/ = √122.36
= 11.1
Perimeter of Triangle = a + b +c
where a = side
b = base
c = side
Perimeter = 18 + 11.1 + 14.2
Perimeter = 43.3
Perimeter= 43
Answer:
1. C
2. B
3. $220
4. $100
Step-by-step explanation:
Answer:
3y + 5
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define expression</u>
(4y + 3) - (y - 2)
<u>Step 2: Simplify</u>
- Distribute negative: 4y + 3 - y + 2
- Combine like terms (y): 3y + 3 + 2
- Combine like terms (Z): 3y + 5
