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lapo4ka [179]
3 years ago
14

Please help. Trig: Laws of Cosines

Mathematics
1 answer:
ladessa [460]3 years ago
8 0

Answer:

16.2 units

Step-by-step explanation:

Greater angle: 180 - 72 = 108

D² = 10² + 10² - 2(10)(10)cos(108)

D² = 261.8033989

D = 16.18033989

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Simplify the following expression:
Salsk061 [2.6K]

Simplification form of the provided expression is -x⁴-2x³+2x+5 option (B) is correct.

<h3>What is an expression?</h3>

It is defined as the combination of constants and variables with mathematical operators.

The options are:

A) -x⁴ - 2x - x + 2

B) -x⁴ - 2x³ + 2x + 5

C) -2x³ + 1

D) -x - 2x² + 2x + 5

We have an expression:

= (x + 3) - [(x + 2)(x³ - 1)]

\rm =x+3-\left(x+2\right)\left(x^3-1\right)

\rm =x+3-x^4+x-2x^3+2

\rm =-x^4-2x^3+2x+3+2

\rm =-x^4-2x^3+2x+5

Thus, simplification form of the provided expression is -x⁴-2x³+2x+5 option (B) is correct.

Learn more about the expression here:

brainly.com/question/14083225

#SPJ1

5 0
2 years ago
Stuck on this pls help<br>Thx​
Len [333]

Answer:

D

Step-by-step explanation:$400x.30=$120

400-120=280

$280x.10=28

280-28=252

8 0
3 years ago
Please help me I need help
brilliants [131]

Answer:

yes tell please can I help you

3 0
3 years ago
The circle shows circle C with diameter LM and inscribed angle LMN. The measurement for angle LMN is 32 what is the measurement
Shtirlitz [24]
The measure of arc LMN = 2 mesure of angle LMN ==> 64°
6 0
3 years ago
Rite an algebraic expression to represent "five plus the quotient of r and 14."
hichkok12 [17]
The answer is 3) 5+r/14

Let's go segment by segment:
<span>"five plus" means addition, so we have 5 +

</span><span>"the quotient of r and 14" is the division result, so sign / must be present: 14/r
</span>
Therefore "five plus the quotient of r and 14" is 5 + 14/r
4 0
3 years ago
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