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Kruka [31]
3 years ago
15

I need help with #11-13

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0
#11. a13+t=3=16 b16 in all


#12.8+8=16

#13.10/2-2=3
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The sum of two complementary angles is 90° Angle A is represented by 3x - 10, and Angle B is represented by x. Solve for x Hint:
Nataly [62]

Angle A = 3x - 10

Angle B = x

Their angle sum = 90° ( complementary angles form 90° )

This can be written in an equation as =

= 3x - 10 + x = 90

= 3x + × + ( -10 ) = 90

= 4x + (-10) = 90

= 4x = 90 + 10 ( transposing-10 from LHS to RHS changes-10 to +10 )

= 4x = 100

= x = 100 ÷ 4 ( transposing ×4 from LHS to RHS changes ×4 to ÷4 )

= x = 25

Angle A = 3x - 10

= 3 × 25 - 10

= 75 - 10

= Angle A = 65°

Angle B = x = 25°

Their sum = 65 + 25 = 90°

Therefore , the complementary angles , Angle A = 65° and Angle B = 25° .

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3 years ago
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Step-by-step explanation:

first tiu need to find a common denominator. that's would 21. I hope you know what to do lol. then you make them improper fractions. SONT FORGET TO SIMPLIFY.

6 0
3 years ago
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What is the reason for each step in the solution of the inequality?<br><br> −2(x+3)−4&gt;4x+30
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Helppppppp pleaseeeeee
ANEK [815]

All you have to do is plug in the number for x, and find y. I will write this out as if in that chart you have shown.

x                            y = 9 - 3x                                    y

_______________________________________

0                           y = 9 - 3(0)                                  9

1                            y = 9 - 3(1)                                   6

2                           y = 9 - 3(2)                                  3

3                           y = 9 - 3(3)                                  0


Hope that helps!!


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What does set up a proportion and solve mean
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Set up fractions and solve them
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