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matrenka [14]
3 years ago
8

Select the two values of x that are roots of the given polynomial below. x^2-3x-5

Mathematics
1 answer:
klio [65]3 years ago
7 0
-b +or- root (b^2 -4ac) / 2a
3+or- root 9+20/ 2
3+ or - root 29 /2

5.38516480713 + 3 = 8.385 / 2
x = 4.1925
or x = -1.1925

a=1
b=-3
c=-5
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Jack is in a helicopter and looking down at two friends’ homes. The angle of depression to the first home is 72°. The angle of d
alexandr402 [8]

The distance between the helicopter and the first home is 369. 87 m

<h3>How to solve the distance using the angle of depression?</h3>

The distance between the helicopter and the first home can be found using sine law,

Hence,

180 - 72 - 49 = 59 degrees.

Therefore,

420 / sin 59 = A / sin 49°

where

  • A  = distance form the first home to the helicopter.

cross multiply

420 sin 49 = A sin 59°

A = 420 sin 49 / sin 59

A = 316.978023694 / 0.8571673007

A = 369.869339199

A = 369. 87 m

Therefore, the distance between the helicopter and the first home is 369. 87 m

learn more on angle of depression here: brainly.com/question/1976859

#SPJ1

5 0
2 years ago
Simplify help me plss cuz I don’t find the answer
dusya [7]
32^(-1/5)

1/32^(1/5)

^1/5 means 5√32 = 2

so the answer is 1/2 or 0.5
6 0
4 years ago
( 3.6 +0.4 ) + 0.25 =
gtnhenbr [62]

Answer:

Step-by-step explanation:

Simplify 3 ratical- 1000

8 0
3 years ago
Someone please help meee
slamgirl [31]
Use the formula:
Y-yo=m(x-xo)
8 0
3 years ago
5x+12=44 then value of 5x-12=?​
KATRIN_1 [288]

Answer:

If 5x+12=44 then value of 5x-12 is 20

Step-by-step explanation:

5x + 12 = 44

  • The first step, we have to find the value of x

5x + 12 = 44

5x = 44 - 12

5x = 32

x = 32/5

x = 6.4

  • After that, insert the value of x into 5x - 12

5x - 12 = ...

5 ( 32/5 ) - 12

= 32 - 12

= 20

3 0
3 years ago
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