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hjlf
3 years ago
13

Angle A and angle B are complementary

Mathematics
1 answer:
Nikitich [7]3 years ago
4 0

Answer:

Step-by-step explanation:

∠A + ∠B  = 90°  {given they are complementary}

5x+ 15 + 30 = 90

5x + 45 = 90

5x = 90 - 45

5x = 45

x = 45/5

x = 9

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Help!!
Elza [17]

Answer:

(b)\ 2x - 9 = -1

(c)\ -2x + 12 = 4

(e)\ 2(x - 10) = -12

Step-by-step explanation:

Required

Which equals x = 4

(a)\ 2x + 6 = 2

Collect like terms

2x  = 2 - 6

2x  = -4

Divide both sides by 2

x = -2

(b)\ 2x - 9 = -1

Collect like terms

2x = -1 + 9

2x = 8

Divide both sides by 2

x = 4

(c)\ -2x + 12 = 4

Collect like terms

-2x =- 12 + 4

-2x =-8

Divide both sides by -2

x = 4

(d)\ 2(x + 2) = 10

Divide both sides by 2

x + 2 =5

Collect like terms

x = 5-2

x = 3

(e)\ 2(x - 10) = -12

Divide both sides by 2

x - 10 = -6

Collect like terms

x = 10 - 6

x = 4

Hence, the equations with the required solution are:

(b)\ 2x - 9 = -1

(c)\ -2x + 12 = 4

(e)\ 2(x - 10) = -12

3 0
3 years ago
F(x) = | 3x +4 |+2<br> g(x)=4<br> Find (f +g)(x)
iVinArrow [24]

Answer:

|3x + 4 | + 6

Step-by-step explanation:

(f+g)(x)= f(x) + g(x)

= |3x+4| + 2 + 4

= | 3x + 4 | + 6

8 0
3 years ago
H(x)=4x+3 what is the coordinate pair for h (1) ?
marysya [2.9K]

Answer:

(1,7)

Step-by-step explanation:

SImply replace x by (1) in the expression to find the value of h:

h(1) = 4 (1) + 3 = 4 + 3 = 7

so for x = 1, h is 7 , which is written as: (1, 7)

8 0
3 years ago
Please help!!!!!!!!!!
Ipatiy [6.2K]
You should get the app "photomath" that will help out alot!!!
8 0
3 years ago
If angle 1 is 110°, what would the other angle measures have to be in order for m || n and
ra1l [238]

Answer:

Angle 2: 110 degrees, 1 and 2 would have to be the same for the lines to be parallel

Angle 3: 70 degrees angle 3 would have to be the complement to angle 1, so 1+3=180 and 70*3=180, so 3=70 degrees

Angle 4: 70 degrees, 3 and 4 have to be the same opposite angles for the lines to be parallel

8 0
2 years ago
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