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ki77a [65]
3 years ago
7

Use the law of cosines to find the balue of cos 0 . Round to answer to two decimal places

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Using the law of cosines then cosΘ is the following quotient

cosΘ = \frac{a^2+b^2-c^2}{2ab}

where a = 5.8, b = 10.5 and c = 10.9

cosΘ = \frac{5.8^2+10.5^2-10.9^2}{2(5.8)(10.5)}

        = \frac{33.64+110.25-118.81}{121.8}

        = \frac{25.08}{121.8} = 0.21 → C

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Katyanochek1 [597]
3x^3y^2=(3)(x)(x)(x)(y)(y)\\\\18xy^3=(3)(3)(2)(x)(y)(y)(y)\\\\Answer:(3)(3)(2)(x)(x)(x)(y)(y)(y)=18x^3y^3
7 0
3 years ago
To determine a monthly budget for gasoline, Rachael determines that she can not spend more
IrinaK [193]

The solution of the given inequality is:

x ≤ 15.24

<h3>How to solve the inequality?</h3>

We know that the maximum that she can spend on gasoline is the 12% of $400.

That is:

(12%/100%)*$400 = 0.12*$400 = $48

Now, we know that each gallon of gas costs $3.15, then if x is the number of gallons of gas that she buys, we have the inequality:

x*$3.15 ≤ $48

To solve the inequality, we need to divide both sides by $3.15

x ≤ $48/$3.15

x ≤ 15.24

So the maximum number of gallons of gasoline that she can buy is 15 gallons (actually a little more).

If you want to learn more about inequalities:

brainly.com/question/18881247

#SPJ1

4 0
1 year ago
HELP PLEASE ASAP HELP PLEASE HELP HELP PLEASE ASAP HELP ME PLEASE ASAP HELP PLEASE HELP ME
insens350 [35]

Answer:

i feel that the coorect answer is b

Step-by-step explanation:


6 0
3 years ago
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What is the value of m in the figure below? In this diagram, ΔABD ~ ΔBCD.
Kryger [21]

Answer:

<h2>√126</h2>

Option D is the right option.

solution,

\frac{ac}{bc}  =  \frac{bc}{dc}  \\ or \:  \frac{18}{ m}  =  \frac{m}{7}  \\ or \: m \times \: m = 18 \times 7(cross \: multiplication) \\ or \:  {m}^{2}  = 126 \\ m =  \sqrt{126}

Hope this helps..

Good luck on your assignment.

Hope

6 0
2 years ago
Which of the following statements about check-cashing companies is FALSE?
Alexeev081 [22]

Answer:

there are no statements...

6 0
2 years ago
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