3 years ago

Please help-help-help

Mathematics

1 answer:

disa [49]3 years ago

3 0

I think the answer is C

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PLS HELP In circle A, secant EC and tangent BC intersect at point C. mЕВ = 171° and mBD 83°. What is mBCD?

liubo4ka [24]

Answer:

∠ BCD = 44°

Step-by-step explanation:

the secant- tangent angle BCD is half the difference of the intercepted arcs, so

∠ BCD = $\frac{1}{2}$ (EB - BD) = $\frac{1}{2}$ (171 - 83)° = $\frac{1}{2}$ × 88° = 44°

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2 years ago

Find dy/dx of y=csc(square root of x)

Vitek1552 [10]

Answer:

$y' = -\dfrac{\cot x \csc x}{2 \sqrt{x}}$

Step-by-step explanation:

y = csc x

y' = -cot x csc x

$y = \csc \sqrt{x}$

$y' = \dfrac{d}{dx} [\csc \sqrt{x}]$

$y' = (-\cot x \csc x) \dfrac{d}{dx} \sqrt{x}$

$y' = (-\cot x \csc x) \dfrac{d}{dx} x^{\frac{1}{2}}$

$y' = (-\cot x \csc x) \dfrac{1}{2} x^{-\frac{1}{2}}$

$y' = -\dfrac{\cot x \csc x}{2 \sqrt{x}}$

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3 years ago

7 pencils cost £5.95. <br> How much do 11 pencils cost?

yuradex [85]

Answer:

11 pencils cost £9.35.

Step-by-step explanation:

Given;

7 pencils = £5.95

1 pencil = 5.95 ÷ 7

= £0.85

Now,

11 pencils = 11 × 0.85

= £9.35

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3 years ago

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I hat number is one hundred more than 292

Wittaler [7]

Answer:

I assume you mean "what" number is

Step-by-step explanation:

your answer would be 100 + 292

Therefore Answer = 392

Please mark my answer as the brainliest for further answers :)

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3 years ago

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AleksAgata [21]

Answer:-10 to positive 10

Step-by-step explanation:

i do not know if im right but i tried.. sorry

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2 years ago