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Sliva [168]
3 years ago
13

I NEED URGENT HELP WITH 18-21

Mathematics
2 answers:
Genrish500 [490]3 years ago
4 0

Answer:

. . . 18. x = 8√6

. . . 19. x = 3

. . . 20. x = 3√3

. . . 21. x = 5/3

Step-by-step explanation:

You have already marked the correct relationships on the drawings. Finding the value of x is a matter of making use of those relationships.

__

18. As you show, x is the given side multiplied by √3, so is ...

. . .x = (8√2)(√3) = 8√6

__

19. As you show, the given side is x multiplied by √2, so ...

. . . 3√2 = x√2

. . . 3 = x . . . . . . . . . . divide by √2

__

20. As you show, the given side is x multiplied by √3, so ...

. . . x√3 = 9

. . . x = 3√3 . . . . . . multiply by (√3)/3

__

21. As you show, ...

. . . 8x -10 = 2x

. . . 6x -10 = 0 . . . . . subtract 2x

. . . x - 10/6 = 0 . . . . divide by 6

. . . x = 5/3 . . . . . . . . reduce the fraction and add it to both sdes

Sholpan [36]3 years ago
3 0
18) x = 8√6
19) x = (3√2)/2
20) x = 3√3
21) roots of x are x= 1 or x = 5/3
x can't be 1 so x = 5/3

Tip for you: You are not meant to use Sine or Cosine Laws/Rules

What I used to obtain my answers
• Pythagorean Theorem
• Trigonometric ratios
• Quadratic equation
• Linear algebra
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3HELP__________________
Brut [27]

Answer:

m∠KIJ = m∠LIM ⇒ answer B

Step-by-step explanation:

* Lets explain how to solve the problem

∵ I is the mid-point of NH

∴ IN = IH

- MJ is perpendicular to NH and passes through I the mid-point of NH

∴ MJ is perpendicular bisector of NH

- NH ⊥ MJ and intersects it at I

∴ m∠NIM = m∠NIJ = 90°

- ∠ NIM consists of two angles ∠NIL and ∠MIL

∵ m∠NIM = m∠NIL + m∠MIL

- ∠NIJ consists of two angles ∠NIK and ∠JIK

∵ m∠NIJ = m∠NIK + m∠JIK

∴ m∠NIL + m∠MIL = m∠NIK + m∠JIK ⇒ (1)

∵ NH bisects ∠KIL

∴ m∠NIL = m∠NIK ⇒ (2)

- From (1) and (2)

∴ m∠MIL = m∠JIK

* m∠KIJ = m∠LIM

7 0
3 years ago
[ HELP!! ][ A ][ S ][ A ][ P ][ ! ][ ! ]
MakcuM [25]
Multiply -2 with x equaling -2x
Multiply -2 with +6 equaling -12
Y - 5 = -2x - 12
Add 12 on both sides
Y - 5 + 12 = -2x - 12 + 12
Y + 7 = -2x
Divide by -2 on both sides

Y + 7 / -2 = -2x/-2

Y + 7
------- = x
- 2
6 0
4 years ago
Read 2 more answers
Luke can buy bottles of water in packages of 6 for $15.24 or in packages of 4 for $11.16. How much money does he save by buying
creativ13 [48]

Answer:

6\ for\ \$15.24\ is\ better\ price\\\\Total\ saving=\$12

Step-by-step explanation:

Cost at the rate 6 for $15.24:

Cost of 6 bottles=\$15.24

Cost of 1 bottle=\$\frac{15.24}{6}

Cost of 48 bottles=\frac{15.24}{6}\times 48=15.24\times 8=\$121.92

Cost at the rate 4 for $11.16:

Cost of 4 bottles=\$11.16

Cost of 1 bottle=\frac{11.16}{4}

Cost of 48 bottles=\frac{11.16}{4}\times 48=11.16\times 12=\$133.92

Hence 6\ bottles\ for\ 15.24 is less expensive.

Total saving=133.92-121.92=\$12

6 0
4 years ago
Please help 30 points!!
hram777 [196]
25-4x=16-4x
25-4x+4x=16-4x+4x
25=16
No solution
Contradiction
3 0
3 years ago
Read 2 more answers
What postulate would justify the following statement if D is between A and B then Ad plus DB equals Ab
rewona [7]

Answer:

Segment addition postulate justify the statement if D is between A and B then Ad plus DB equals Ab

Step-by-step explanation:

This postulate states that if two points A and B are given and third point D lies on line segment AB only if distance between the points satisfy the equations AD+DB=AB.

3 0
3 years ago
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