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ozzi
3 years ago
14

Solve the system of equations by elimination:

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
7 0

Answer:

B (1/2,-2)

Step-by-step explanation:

4b + 13c = -24 --(1)

12b - 5c = 16 --(2)

(1)x3

12b + 39c = -72 --(3)

(3)-(2)

12b + 39c - 12b + 5c = -72-16

c = -2

Sub c = -2 into (1)

4b = -24 - 13(-2)

b = 1/2

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Gekata [30.6K]

Answer:

x ≈ 2879.4 m

Step-by-step explanation:

Measure of ∠DAC = 10°

Measure of ∠DAB = 90°

Measure of ∠BAC = 90° - 10° = 80°

By applying cosine rule in ΔABC,

cos(80°) = \frac{\text{Adjacent side}}{\text{Hypotenuse}}

              = \frac{AB}{AC}

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4 0
3 years ago
∠E and ∠F are vertical angles with m∠E=9x+12 and m∠F=3x+24. What is the value of x?
statuscvo [17]

Answer:

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Step-by-step explanation:

<em>Vertical angles are equal as per definition.</em>

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<u>Solution</u>

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4 0
3 years ago
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mel-nik [20]
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Answer:

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Step-by-step explanation:

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Values from the given list include ...

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<em>Additional comment</em>

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6 0
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Step-by-step explanation:

5 0
3 years ago
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