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3 years ago

Given that x = 5.4 m and 0 = 26°, work out BC rounded to 3 SF.

Mathematics

1 answer:

bagirrra123 [75]3 years ago

4 0

Answer:

BC ≈ 4.85 m

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos26° = $\frac{adjacent}{hypotenuse}$ = $\frac{BC}{AC}$ = $\frac{BC}{5.4}$ ( cross- multiply )

5.4 × cos26° = BC , then

BC ≈ 4.85 m ( to 3 s f )

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Determine x in the figure.<br> 74°<br> 2xº

Monica [59]

Answer:

-37

Step-by-step explanation:

Simplifying

74 + 2x = 0

Solving

74 + 2x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-74' to each side of the equation.

74 + -74 + 2x = 0 + -74

Combine like terms: 74 + -74 = 0

0 + 2x = 0 + -74

2x = 0 + -74

Combine like terms: 0 + -74 = -74

2x = -74

Divide each side by '2'.

x = -37

Simplifying

x = -37

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2 years ago

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You just have to do the opposite of what Corey did.
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4 0

3 years ago

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Solve the equation. Round to the nearest hundredth. Show work.

muminat

Answer:

Final answer is approx x=0.16.

Step-by-step explanation:

Given equation is $2.8\times 13^{4x} +4.8 = 19.3$

Now we need to solve equation $2.8\times 13^{4x} +4.8 = 19.3$ and round to the nearest hundredth.

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$2.8\times 13^{4x} = 19.3-4.8$

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$13^{4x} = \frac{14.5}{2.8}$

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$\log(13^{4x}) = \log(5.17857142857)$

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3 years ago

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inessss [21]

Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

Step-by-step explanation:

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