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Anit [1.1K]
3 years ago
8

Evalute 2 (a - 5) + 2, if a = 15 O 14 0 27 O 22 07

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
5 0

Answer:

22

Step-by-step explanation:

2 (a - 5) + 2

Let a = 15

2( 15-5) +2

2(10) +2

20+2

22

Mrac [35]3 years ago
4 0
I’m pretty sure it’s 22
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In ΔLMN, n = 510 cm, l = 820 cm and ∠M=20°. Find ∠L, to the nearest degree
Dafna11 [192]

The angular measure L is : 47°

<h3>What are angles?</h3>

Angles are formed when two lines meet.

Analysis:

Firstly, we calculate for m using cosine rule.

m^{2} = 510^{2} + 820^{2} -2(510)(820) cos 20

m^{2} = 260100 + 672400 -83600(0.9396)

m^{2} = 146618.56

m = \sqrt{146618.56} = 382.9cm

using sine rule to find ∠L

382.9/sin20 = 820/sinL

sinL = 820sin20/382.9

sinL = 820(0.342)/382.9

sinL = 0.732

L = sin inverse of 0.732 = 47°

In conclusion, ∠L is 47°

Learn more about sine and cosine rule: brainly.com/question/4372174

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8 0
2 years ago
What is the answer to this problem
Tpy6a [65]

Step One

Solve for CE as a numerical value

CE = 1/2 * CD = 1/2 66 = 33

CE = 33

Step Two

Solve for x

CD also equals x^2 - 3     which is given.

x^2 - 3 = 33                       Add 3 to both sides

x^2 = 33 + 3

x^2 = 36                            Take the square root of both sides

sqrt(x^2) = sqrt(36)

x = 6

Step 3

Find the length of AE

AE is given as 6x - 10

x = 6

AE = 6*6 - 10

AE = 36 - 10

AE = 26

Step 4

Find AB

AE = 1/2 AB                  Definition of bisect

26 = 1/2 AB                  Multiply by 2

2*26 = AB

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3 0
3 years ago
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Alisiya [41]

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5 0
3 years ago
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Leni [432]

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Step-by-step explanation:

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<em>HAVE A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

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Step-by-step explanation:

8 0
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