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2 years ago

If 2x and (4x+30) are complementary angles. find the angles. Please answer it it's urgent.

Mathematics

2 answers:

Alik [6]2 years ago

6 0

Answer:

20 ,70

Step-by-step explanation:

Complementary angles sum up to 90

2x + 4x + 30 = 90

6x + 30 = 90

Subtract 30 from both sides

6x = 90 - 30

6x = 60

x = 60/6

x = 10

2x = 2*10 = 20

4x +30 = 4*10 +30 = 40 +30 = 70

Masteriza [31]2 years ago

4 0

Answer:

20 and 70

Step-by-step explanation:

2x + 4x + 30 =90

6x=90-30

6x=60

x=60/6x

x=10

so, 2x= 20 and 4x=40

20,70

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Complete the statements.

spayn [35]

Answer:

1. 30

2. 150

Step-by-step explanation:

$3tan^2(x)-1 =0$

Lets assume tan(x) = u

$3u^2(x)-1 =0$

Now we solve for 'u'

add 1 on both sides

$3u^2(x) =1$ , divide both sides by 3

$u^2 = \frac{1}{3}$

Take square root on both sides

$u = +-\frac{1}{\sqrt{3} }$

We replace tan(x) for 'u'

$tan(x) = +-\frac{1}{\sqrt{3} }$

x = 30 because $tan(30) =+\frac{1}{\sqrt{3} }$ in first quadrant

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x = 150 because $tan(150) =-\frac{1}{\sqrt{3} }$ in second quadrant

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4 0

3 years ago

Helpppp ahhhhhhh plz

kaheart [24]

Answer:

It's Parallel

Step-by-step explanation:

Perpendicular have to intersect

3 0

2 years ago

Ax-by/c =d solve for x

wolverine [178]

Answer: x = (cd + by) / a

Working out:

(ax - by) / c = d

1)Multiply by c on both sides to get:
ax - by = cd

2) Add by on both sides to get:
ax = cd + by

3) divide by a on both sides to get:
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4 0

3 years ago

Lily is using wrapping paper to cover a box with dimensions 7 centimeters by 10 centimeters by 5 centimeters. What is the least

Leto [7]

Answer: 310 centimeters square of paper

Explanation: to find the answer you need to know the surface area of the box. So you use the formula SA = 2ab+2bc+2ac
A=7
B=10
C=5
After inputting the values you get:
SA = 2(7)(10) + 2(10)(5) + 2(7)(5)
and after simplifying:
SA = 140+100+70
SA=310

4 0

2 years ago

Arrange them from highest to lowest, need help asap Ty

Viktor [21]

Answer:

113, 118, 151, 162, 167, 181, 206, 207, 228, 232, 232, 233, 233, 247, 248, 251, 253, 255, 256, 276

Step-by-step explanation:

Good luck man :)

7 0

1 year ago