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3 years ago

Solve for B 5B-3(4-B)=2(B+21) Much appreciated!!!

Mathematics

2 answers:

Naya [18.7K]3 years ago

6 0

B=-3.18 I hope that helps

slega [8]3 years ago

6 0

I will write it out in steps: 5B-12+3B=2B+42 5B+3B-2B=42+12 6B=54 B=9

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In ΔJKL, k = 9.6 cm, l = 2.7 cm and ∠J=43°. Find ∠L, to the nearest 10th of a degree.

Bogdan [553]

Answer:

L = 10.64°

Step-by-step explanation:

From the given information:

In triangle JKL;

line k = 9.6 cm

line l = 2.7 cm; &

angle J = 43°

we are to find angle L = ???

We can use the sine rule to determine angle L:

i.e

$\dfrac{j}{SIn \ J} = \dfrac{l}{ SIn \ L}$

Using Pythagoras rule to find j

i,e

j² = k² + l²

j² = 9.6²+ 2.7²

j² = 92.16 + 7.29

j² = 99.45

$j = \sqrt{99.45}$

j = 9.97

∴

$\dfrac{9.97}{Sin \ 43} = \dfrac{2.7}{ Sin \ L}$

${9.97 \times Sin (L ) = (2.7 \times Sin \ 43)$

$= Sin \ L = \dfrac{ (2.7 \times Sin \ 43)}{9.97 } \\ \\ = Sin \ L = \dfrac{ (2.7 \times 0.6819)}{9.97 } \\ \\ = Sin \ L = 0.18466 \\ \\ L = Sin^{-1} (0.18466) \\ \\ L = 10.64 ^0$

3 0

2 years ago

How to find the rate of change of the volume of cone?

sleet_krkn [62]

You can use calculus ( related rates). Given the rate os change of the radius for example you can find the rate of change of volume using differential calculus.

8 0

3 years ago

What is 1/3 + 1/2?.......

Virty [35]

Answer:

5/6

Step-by-step explanation:

1/3 + 1/2 = 5/6

3 0

3 years ago

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What is 5,782 rounded to the nearest thousand