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tamaranim1 [39]
3 years ago
8

Please help me on this I’m super stuck

Mathematics
1 answer:
erastova [34]3 years ago
6 0

Answer:

<u>BC = 3.1666</u>

Step-by-step explanation:

To solve this you need to know that cosine∅ = adjacent/hypotenuse. We already know that hypotenuse = 5 and that ∅ = 70*. By substituting these in you will get cosine 70* = adjacent/5. Evaluate cosine 70* on the calculator and get 0.633... Multiply both sides by 5 and get adjacent is about equal to 3.1666. Because BC is the adjacent side of the triangle, this is the length of BC.

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In the figure M ab =45 and M cd= 23 what is the value of x?
const2013 [10]

Answer:

34°

Step-by-step explanation:

The measure of vertical angles formed by two chords is equal to one half the sum the measures of the arcs.

In other words, x is the average:

x = (23° + 45°) / 2

x = 34°

5 0
3 years ago
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lbvjy [14]

Answer:

\sf \:  \fbox{Option C) \: The  salary of B is 6000₹}

Step-by-step explanation:

Let the salary or A is x and salary of B is y.

now,

Condition one,The sum of 3/4th of A’s salary and 5/3rd of B’s salary is ₹16,000.

writing above statement in equation form,

\sf \frac{3x}{4}  +  \frac{5y}{3}  =  16000

Multiplying above equation with twelve,

\sf \frac{3x}{4}  +  \frac{5y}{3}  =  16000 \\ \sf \frac{12 \times 3x}{4}  +  \frac{12 \times 5y}{3}  =  16000 \times 12  \\  \sf  \fbox{9x + 20y = 192000} \rightarrow eq. 1

and condition two,

The difference of their salaries is ₹2000

\sf \: x - y = 2000

Multiplying above equation with 20

\sf \fbox{\: 20x -20y = 40000} \rightarrow eq.2

On adding equation 1 and equation 2,

\sf9x +  \cancel{20y} = 192000 \\ \sf 20x - \cancel{20y} = 40000 \\     \hline  \sf 29x  + 0y = 232000 \\  \sf x =  \frac{232000}{29}  \\ \sf \:  \fbox{x = 8000₹}

Substituting the value of x in,

\sf \: x - y = 2000 \\ \sf \: 8000 - y = 2000 \\ \sf \:  y = 8000 - 2000 \\ \sf  \fbox{y = 6000₹}

\sf \:  \fbox{The  salary of B is 6000₹}

<em><u>Thanks for joining brainly community!</u></em>

5 0
2 years ago
Consider the following system of equations: y = −2x + 3 y = x − 5 Which description best describes the solution to the system of
Anton [14]
Y= -2x + 3
y = x - 5
y = y
-2x + 3 = x - 5
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4 0
2 years ago
Please help i have no idea what this is!!
Nesterboy [21]

Answer:

B

Step-by-step explanation:

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y1 = 3

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7 0
2 years ago
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sasho [114]

Answer:

2 Awnsers

Step-by-step explanation:

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