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Gnesinka [82]
3 years ago
13

SOMEONE PLEASE HELP QUICKLY!!! I’LL MARK BRAINLIEST

Mathematics
1 answer:
Rasek [7]3 years ago
5 0

Answer:

x=18.5 y=14.2

Step-by-step explanation:

The unmarked angle for the top/x triangle is 109 (all angles add up to 180, 180-50-21=109)

Use cosine rule:

(a/sina)=(b/sinb)

(x/sin109)=(15/sin50)

(x/sin109)=19.58110934

x=18.51430261

The top-most angle of the bottom/y triangle is 71 (angles on a straight line are 180, 180-109=71)

The righthand angle of the bottom/y triangle is 19 (angles in a triangle add to 180, 180-71-90=19)

Use cosine rule again:

(a/sina)=(b/sinb)

(y/sin71)=(15/sin90)

y/sin71=15

y=14.18277863

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2 * 135/45 = 6 miles

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How many fluorine atoms are found in 1.92 grams of AsF3?
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First you need to find out how many moles of AsF3 are in 1.92 grams.  
The molar mass of AsF3 is 131.918 g/mole so  
1.92 g * (1 mole)/(131.918g) = .0146 moles AsF3 


 Each mole of AsF3 has 6.02 x10^23 molecules of AsF3 and each molecule of AsF3 has 3 flourines, so you need to convert from moles to molecules AsF3 to atoms of F 
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Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator. 0.24:0.20
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\frac{6}{25} : \frac{1}{5}
7 0
4 years ago
Can anyone help me with this qu9?? its bothering me <br>explain ???
ArbitrLikvidat [17]

Answer:

Sue played 30 games

Step-by-step explanation:

Probability is typically given as a fraction or percentage where the numerator is the number of desired outcomes and the denominator is the total number of outcomes.  Since Sue's won 12 games and estimated the probability to be 0.4 or 4/10, you can set up a proportion, or equivalent ratios, to solve for the number of games she played:

\frac{gameswon}{totalgames}=\frac{12}{x}=\frac{4}{10}

Cross multiply:  4x = 120

Divide by 4:  4x/4 = 120/4

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7 0
3 years ago
Select the correct answer from the choices given (13 4i) n = 0 what is n? 0 1 –13 4i –13 - 4i
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The correct answer from the choices given will be -13 - 4i. The numerical part is the real number while the term containing i is the imaginary part.

<h3>What is the complex number?</h3>

A complex number is one that both a real and an imaginary component, both of which are preceded by the letter I which stands for the square root of -1.

The given complex number as;

\rm 13 + 4 i + n =0

By transfeering the left-hand side term to the right-hand side the sign will change. We will get the value of n as;

\rm n=-13 - 4i

Hence the correct answer from the choices given will be -13 - 4i.

To learn more about the complex number refer to the link;

brainly.com/question/10251853

7 0
2 years ago
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