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4 years ago

PLEASE HELP FAST.......

Mathematics

1 answer:

ozzi4 years ago

3 0

The value of x is 10

Its hard to explain

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Lines CD and DE are tangent to circle A shown below

Mandarinka [93]

Answer:

Step-by-step explanation:

Circumference - arc length = arc of the rest of the circle

360 - 126 = 234

arc of the rest of the circle - arc length = 2 times the angle

234 - 126 = 108

108/2 = 54

3 0

3 years ago

Read 2 more answers

The value pi/4 is a solution for the equation 3 sqrt 2 cos theta+2=-1

natulia [17]

Answer:

<h2>FALSE</h2>

Step-by-step explanation:

$3\sqrt2\cos\theta+2=-1\\\\\text{Method 1}\\\\\text{Put}\ \theta=\dfrac{\pi}{4}\ \text{to the equation and check the equality:}\\\\\cos\dfrac{\pi}{4}=\dfrac{\sqrt2}{2}\\\\L_s=3\sqrt2\cos\dfrac{\pi}{4}+2=3\sqrt2\left(\dfrac{\sqrt2}{2}\right)+2=\dfrac{(3\sqrt2)(\sqrt2)}{2}+2\\\\=\dfrac{(3)(2)}{2}+2=3+2=5\\\\R_s=-1\\\\L_s\neq R_s\\\\\boxed{FALSE}$

$\text{Method 2}\\\\\text{Solve the equation:}\\\\3\sqrt2\cos\theta+2=-1\qquad\text{subtract 2 from both sides}\\\\3\sqrt2\cos\theta=-3\qquad\text{divide both sides by}\ 3\sqrt2\\\\\cos\theta=-\dfrac{3}{3\sqrt2}\\\\\cos\theta=-\dfrac{1}{\sqrt2}\cdot\dfrac{\sqrt2}{\sqrt2}\\\\\cos\theta=-\dfrac{\sqrt2}{2}\to\theta=\dfrac{3\pi}{4}+2k\pi\ \vee\ \theta=-\dfrac{3\pi}{4}+2k\pi\ \text{for}\ k\in\mathbb{Z}\\\\\text{It's not equal to}\ \dfrac{\pi}{4}\ \text{for any value of }\ k.$

7 0

3 years ago

What is the area of this Trapezoid?<br> (no answer choices)

kirza4 [7]

The answer should be 96

8 0

3 years ago

Which two-dimensional shape cannot be used to create a pyramid?

kondor19780726 [428]

The answer would be circle, if you used a circle, it would be a cone, not a pyramid

8 0

3 years ago

Read 2 more answers

Bonnie’s Bakery goes through 22 4/5 cups of vegetable oil in 2 weeks. If they use the same amount each week, how much do they go

bezimeni [28]

Answer:

11.4 and/or 11 2/5

Step-by-step explanation:

You can turn 22 4/5 into a decimal which is 22.8 and divide that by 2 and it gets you 11.4. You can also turn 22 4/5 into an improper fraction which is 114/5. Multiply that by 1/2 which is 11 2/5.

7 0

3 years ago

PLEASE HELP FAST.......​

PLEASE HELP FAST.......