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Kay [80]
3 years ago
13

Need help on these problems

Mathematics
2 answers:
Eduardwww [97]3 years ago
8 0

Answer:

1.) x = 50 2.) x = 70

Step-by-step explanation:

These angles are complementary angles meaning the angles add up to 90°. Therefore, we can set up equations to solve for the variables.

1.)

x + 40 = 90

x = 50

2.)

x + 20 = 90

x = 70

hammer [34]3 years ago
4 0

Answer:

x = 50°

x = 70°

Step-by-step explanation:

90° - 40° = 50°

x = 50°

90° - 20° = 70°

x = 70°

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Write an expression for the perimeter of the triangle shown below:
AveGali [126]

Answer:

The answer is 0.1x-16

Step-by-step explanation:

-3.4x+3x+.5x=0.1x and -25+9 is -16  which is 0.1x-16

6 0
3 years ago
In ΔIJK, k = 3.6 inches, i = 1.3 inches and ∠J=13°. Find the length of j, to the nearest 10th of an inch.
KonstantinChe [14]

Answer:

5.6 inches

Step-by-step explanation:

let c = length of 'j'

I used the Law of Cosines:  c^{2} = a^{2} + b^{2} -2ab· cosC

= (1.3)^2 + (3.6)^2 - 2(1.3)(3.6) x 0.97

5 0
3 years ago
Determine the value of b that allows each expression to be factored. (X^2-bx-8)
Kipish [7]
The answer is b=2
cuz (x-4)(x+2) multiplies
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7 0
3 years ago
Solve for X: 5/6 = 10/2x-3<br><br>x=___
adoni [48]

Answer:

x = 7.5

Step-by-step explanation:

5/6 = 10/2x-3

Solve using cross products

5 ( 2x-3) = 6*10

Divide each side by 5

2x-3 = 6*10/5

2x-3 =12

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2x-3+3 = 12+3

2x =15

Divide each side by 2

2x/2 = 15/2

x = 7.5

7 0
3 years ago
HELPPP!! ITS DUE TODAY PLS 83 points!!
anzhelika [568]

Answer:

Question

Step-by-step explanation:

it not showing the questions

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