3 years ago

To find 12×13 I double 13 and halve 12 and multiply what's an exspression for this

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

4 0

Expression: x × y = x/2 × 2y

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Solve for x in the given interval. sec x= -2√3/3, for π/2 ≤x≤π

drek231 [11]

Answer:

b. $x=\frac{5\pi}{6}$

Step-by-step explanation:

The given function is

$\sec x=-\frac{2\sqrt{3} }{3},\:\:for\:\:\frac{\pi}{2}\le x \le \pi$

Recall that the reciprocal of the cosine ratio is the secant ratio.

This implies that;

$\frac{1}{\cos x}=-\frac{2\sqrt{3} }{3}$

$\Rightarrow \cos x=-\frac{3}{2\sqrt{3} }$

$\Rightarrow \cos x=-\frac{\sqrt{3}}{2}$

We take the inverse cosine of both sides to obtain;

$x=\cos^{-1}(-\frac{\sqrt{3}}{2})$

$x=\frac{5\pi}{6}$

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3 years ago

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KengaRu [80]

I think its 1 on the graph correct me if im wrong

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2 years ago

A) Work out the value of angle x. X X= b) Give reasons for your answer.

Dmitriy789 [7]

Answer:

x = 60° (Alternate angles)

Step-by-step explanation:

a) x = 60°

b) Reason: Alternate angles

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3 years ago

What is 5,683 divided by 8

salantis [7]

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Step-by-step explanation:

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2 years ago

A map has a scale of 2 inches : 12 miles. Two cities on the map are 6.5 inches apart. Find the actual distance between the two c

almond37 [142]

Answer:

Step-by-step explanation:

2in:12m = 6.5in:?m

6.5 / 2 = 3.25

3.25 x 12

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2 years ago