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Anni [7]
3 years ago
5

Solve the system of equations

D12x%20-%2020%7D%7D%20%5Cright." id="TexFormula1" title="\left \{ {{y=15x + 9} \atop {y=12x - 20}} \right." alt="\left \{ {{y=15x + 9} \atop {y=12x - 20}} \right." align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Maksim231197 [3]3 years ago
3 0
Go with B I did the problem
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Arisa [49]

Answer:

Kindly check explanation

Step-by-step explanation:

Since the triangle is right angled ; we can solve for x using Pythagoras :

x = hypotenus ; hence ;

x² = opposite² + adjacent²

x² = 15² + 8²

x² = 225 + 64

x² = 289

x = √289

x = 17

Using Trigonometry :

Sin D = side opposite D / hypotenus = 8/17

Cos D = side Adjacent D / hypotenus = 15 / 17

Tan D = side opposite D / Adjacent side = 8/15

Sin F = side opposite F / hypotenus = 15/17

Cos F = side Adjacent F / hypotenus = 8 / 17

Tan F = side opposite F / Adjacent side = 15/8

6 0
3 years ago
0.4 which one is bigger? 0.36
Oksi-84 [34.3K]

Answer:

0.36

Step-by-step explanation:

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4 0
3 years ago
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Marizza181 [45]

Answer:

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Step-by-step explanation:

6 0
4 years ago
When solving the system x + 2y = 9 and x - y = 6 by substitution, what can be substituted for x in the second equation?
bazaltina [42]
X+2y = 9 ---------eq.1
x-y =6 ----------- eq.2

x = 9 -2y (from eq. 1)

Now substitute the value of x in the second eq.2

9-2y-y =6
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y =1

So,
x +2 (1)= 9
x= 7


8 0
4 years ago
Carol rolled a dice 150 times she rolled a six 39 time
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Answer:

nice

Step-by-step explanation:

whats the rest of the problem or is it just that she rolled a dice

8 0
3 years ago
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