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jek_recluse [69]
2 years ago
13

Keep in mind significant figures. 6.020*0.0510=?

Mathematics
2 answers:
xeze [42]2 years ago
7 0

Answer:

3.072×10^-1

Step-by-step explanation:

please mark me as brainlest

Nadya [2.5K]2 years ago
5 0

Answer:

0.307

Step-by-step explanation:

6.020 multiplied by 0.0510 is 0.30702 and when we multiply, we round the answer to the least sig figs. That would be 3 since 0.510.

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Ugo [173]

The length of the brace required is 4.3m

What is sine rule?

In a ΔABC a, b and c are the sides and A, B and C are angles then,

\frac{a}{SinA}=\frac{b}{sinB}=\frac{c}{sinC}

We can find the length, l as shown below:

Let AB=3m, BC=2m and AC=l

Let ∠A=25°

So, in ΔABC

\frac{BC}{sinA}=\frac{AB}{sinC}=\frac{AC}{SinB}

\frac{BC}{sinA}=\frac{AB}{sinC}

\frac{2}{sin25}=\frac{3}{sinC}

\angle{C}=sin^{-1}(\frac{3\times sin25}{2} )

∠C=39.34°

∠A+∠B+∠C=180°

∠B=180°-25°-39.34°

∠B=115.66°

\frac{BC}{sinA}=\frac{AC}{SinB}

\frac{2}{sin25}=\frac{l}{sin(115.66)}

l=\frac{2\times sin(115.66)}{sin25}

l=4.2659

Rounding to nearest tenth of meter.

l=4.3m

Hence, the length of the brace required is 4.3m

Learn more about Sine Rule here:

brainly.com/question/25852087

#SPJ1

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Helpppp thanksssss!!!!!
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I believe the answer is A

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