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Helen [10]
2 years ago
6

What is the decimal expansion of the number 28 over 4

Mathematics
1 answer:
Gre4nikov [31]2 years ago
7 0
28/4 = 7
there is no decimal expansion
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HELP ME PLEASE, i will give brainliest
max2010maxim [7]

Based on the right angle triangle and the given parameters, cos K = 5/13

<h3>Trigonometric ratios</h3>

  • sin = opposite / hypotenuse

  • cos = adjacent / hypotenuse

  • Tan = opposite / adjacent

Given parameters:

  • Hypotenuse = 13
  • Adjacent = 5
  • Opposite = 12

Therefore,

cos K = adjacent / hypotenuse

cos K = 5/13

Learn more about right triangle:

brainly.com/question/2217700

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2 years ago
in a survey, 250 adults and children were asked whether they know how to swim. the surgery data are shown in the relative freque
Nadusha1986 [10]

Answer: D

Step-by-step explanation:

7 0
2 years ago
Solve for x. Show your work.
hram777 [196]
5(5+x) = 6(6+4)
25+5x = 60
5x = 35
  x = 7

-----------------
3(3+5) = 4(4+x)
24 = 16 + 4x
4x = 24-16
4x = 8
  x = 2

7 0
3 years ago
Read 2 more answers
HELPPP ILL GIVE EXTRA POINTS QUESTION ABOVE
MatroZZZ [7]

Answer:

The answer is the top option choice "both i and ii."

Step-by-step explanation:

Hopes this helps.

8 0
2 years ago
Pls, can you help me? thx.<br><img src="https://tex.z-dn.net/?f=%20%5Ccos%28x%20%2B%20%5Cfrac%7B%5Cpi%7D%7B3%7D%29%20%5Cgeqslant
Veseljchak [2.6K]

For x between -\pi and \pi, we have

  • \cos x=\frac{\sqrt2}2=\frac1{\sqrt2} when x=\pm\frac\pi4;
  • \cos x=1 for x=0; and
  • \cos x=0 for x=\pm\frac\pi2

\cos x is continuous over its domain, so the intermediate value theorem tells us that

\cos x\ge\frac{\sqrt2}2

is true for -\frac\pi4\le x\le\frac\pi4.

For all x, we take into account that \cos x is 2\pi-periodic, so the above inequality can be expanded to

-\dfrac\pi4\le x+2n\pi\le\dfrac\pi4

where n is any integer. Equivalently,

-\dfrac\pi4-2n\pi\le x\le\dfrac\pi4-2n\pi

To get the corresponding solution set for

\cos\left(x+\dfrac\pi3\right)\ge\dfrac{\sqrt2}2

simply replace x with x+\frac\pi3:

-\dfrac\pi4-2n\pi\le x+\dfrac\pi3\le\dfrac\pi4-2n\pi

\implies\boxed{-\dfrac{7\pi}{12}-2n\pi\le x\le-\dfrac\pi{12}-2n\pi}

7 0
3 years ago
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