3 years ago

9. Ben drinks tea at a relatively quick rate. He drinks 1/2 liter of tea every 2/3 of an

Mathematics

1 answer:

AURORKA [14]3 years ago

8 0

Answer:

Step-by-step explanation:

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The solution of this question

nata0808 [166]

9514 1404 393

Answer:

30°, 150°

Step-by-step explanation:

You know the answer to this because you have memorized the short table of trig function values.

sin(θ) = 1/2 for θ = 30° and θ = 150°

5 0

3 years ago

Let sin A= -3/5 with 270°< A< 360°. Find the following.<br> sin A/2

GREYUIT [131]

Answer:

1/sqrt10

Step-by-step explanation:

1) Find out cosA using formula (cosA)^2+(sinA)^2=1

The module of cosA= sqrt (1- (-3/5)^2)= sqrt 16/25=4/5

So cosA=-4/5 or cosA=4/5.

Due to the condition 270degrees< A<360 degrees, 0<cosA<1 that's why cosA=4/5.

2) Find sinA/2 using a formula cosA= 1-2sinA/2*sinA/2 where cosA=4/5.

(sinA/2)^2= 0.1

sinA= sqrt 0.1= 1/ sqrt10 or sinA= - sqrt 0.1= -1/sqrt10

But 270°< A< 360°, then 270/2°<A/2<360/2°

135°<A/2<180°, so sinA/2 must be positive and the only correct answer is

sin A/2= 1/sqrt10

6 0

2 years ago

Absolute value<br>|4w-6|=-2

Andreyy89

• 4w -6 = -2
+6 +6
4w= 4
— —
4 4
w=1
• 4w - 6 = 2
+6 +6
4w =8
— —
4 4
w=2

3 0

3 years ago

Is 2/8 more than 1/2 not really sure about that

77julia77 [94]

It's a trick question. 1/2 is more than 2/8/

6 0

3 years ago

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What is the equation of the line x–3y=18 in slope-intercept form? Drag and drop the appropriate number, symbol, or variable to e

Sunny_sXe [5.5K]

Simple...

you have: x-3y=18

You want to convert it into slope-intercept form or y=mx+b form-->>>

x-3y=18

Isolate the variable-->>

x-3y=18
-x -x

-3y=-x+18

Now simply divide...

$\frac{-3y}{-3} = \frac{-x+18}{-3}$

y= $\frac{1}{3}x -6$

Thus, your answer.

3 0

3 years ago

Read 2 more answers