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Nina [5.8K]
3 years ago
9

Please help me!!!! Anyone pleaseeeee!!!

Mathematics
1 answer:
otez555 [7]3 years ago
3 0

Answer:

69 degree

Step-by-step explanation:

Using cosine formula again :))

So we have

BC^2 = AB^2 + AC^2 - 2*AB*AC*cosA

BC^2 = 32^2 + 28^2 -2*28*32*cos56

BC = 28.3884 cm

So B:

AC^2 = AB^2 + BC^2 - 2*AB*BC*cosB

CosB=0.3559

B=69.14 degree

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40x^-4 y^-6/(over)10x^-5 y^5
lisov135 [29]

Answer:

4x/y¹¹

Step-by-step explanation:

1) take out constants

40/10 * x⁻⁴y⁻⁶/x⁻⁵y⁵

2) simplify 40/10 to 4

4 * x⁻⁴y⁻⁶/x⁻⁵y⁵

3) Use Quotient Rule: xᵃ/xᵇ=xᵃ⁻ᵇ

4x⁻⁴⁺⁵y⁻⁶⁻⁵

4) Simplify -4 + 5 to 1

4x¹y⁻⁶⁻⁵

5) simplify -6-5 to -11

4x¹y⁻¹¹

6) use rule of one: ₓ¹=ₓ

4xy⁻¹¹

7) use negative power rule: x⁻ᵃ=1/xᵃ

4x * 1/y¹¹

8) simplify

4x/y¹¹

7 0
2 years ago
Solve the following equation for x<br> 2x+6=3x−12x+6=3x−1
Rudik [331]

Answer: x=11/22

Step-by-step explanation: 2x+6=3x−12x+6=3x-1                                           2x+6=3x+−12x+6=3x+-1                                                                                       2x+6=(3x+−12x)+(6+-1)=3x                                                                     2x+6+9x=−9x+5+9x=3x+9x                                                                                   11x+6=5=12x                                                                                                 11x+12x=6+5                                                                                             22x/22=11/22                                                                                                       x=11/22                                                                                                                                                                                                                                                                                            

3 0
2 years ago
Write an equivalent expression of 16x - 24
telo118 [61]

Answer:

2x-3

Step-by-step explanation:

16/8=2

24/8=3


8 0
3 years ago
Complete the following sentence. If 3/4 =x/8 , then x is equal to what?
Tanzania [10]

Answer:

#1. Let x be the number of hours spent dog walking, then the amount of money earned dog working is 12x.

#2. Let y be the number of hours spent washing cars, then the amount of money earned washing cars is 18y.

Step-by-step explanation:

Hopefully this helped, if not HMU and I will get you a better answer.

<em>-Have a great day! :)</em>

5 0
3 years ago
Lucy has a strawberry lace that is 36cm long. She needs pieces 18mm long to decorate a cake. How long is the 36cm one in mm
KonstantinChe [14]
The strawberry lace is 36 cms long.
36 cms = 360 mm
(Because we multiply by 10, when we convert from cm to mm).
7 0
3 years ago
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