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lapo4ka [179]
3 years ago
6

PLEASE HELP!! 20 POINTS

Mathematics
1 answer:
WARRIOR [948]3 years ago
6 0
The answer to the first expression is
-21b + 7bc or (-7b * 3) + (7b * 6)
the answer to the second expression is the second and third option
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PLEASE HELP ASAP!!!!!
attashe74 [19]
For this case what we must do is use the law of cosines.
 We then have the following equation:
 c ^ 2 = a ^ 2 + b ^ 2 - 2 * a * b * cos (x)

 Where,
 a, b: sides of the triangle
 x: angle between sides a and b.
 Substituting values we have:
 c^2 = 90^2 + 75^2 - 2*90*75*cos(85)

 Clearing the value of c we have:
 c =  \sqrt{ 90^2 + 75^2 - 2*90*75*cos(85)}
 Answer:
 
An expression that is equivalent to how many feet the oak trees are from each other is:
 
c = \sqrt{ 90^2 + 75^2 - 2*90*75*cos(85)}
7 0
3 years ago
Anna and Alice share a rectangle bedroom that is 18 feet long and 14 feet wide. they split the room into two halves by placing a
Alja [10]
The area of the whole room = 14 × 18 = 252

Since they divide it by half, divide the are by 2.

252 ÷ 2 = 126

Answer = 126 ft²

Hope this helped☺☺
4 0
3 years ago
Read 2 more answers
Which of these are the constant?<br> 4y+1+9x
kupik [55]

Answer:

1 is the constant

Step-by-step explanation:

8 0
3 years ago
What is the reflection image of (5, -3) across the line y = -x?
Snowcat [4.5K]
<span> Over the y-axis </span> <span>(x, y) → (−x, y) so ( -5, -3)</span>
5 0
4 years ago
Read 2 more answers
PLEASE HELPP IT IS SUPER EASY
Rashid [163]

Q- 24.9

R- 7.3

S- -41.5

T- 6.3

Hope this helps❤️

3 0
3 years ago
Read 2 more answers
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