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dezoksy [38]
4 years ago
13

HELP ME PLEASE!!!!

Mathematics
2 answers:
Rama09 [41]4 years ago
5 0
The answer is B   
√240= √16 * √15  (√16= 4)

answer is 4√15
kondaur [170]4 years ago
4 0
240=2\cdot120=2\cdot2\cdot60=2\cdot2\cdot2\cdot30=2\cdot2\cdot2\cdot2\cdot15=16\cdot15\\\\\sqrt{240}=\sqrt{16\cdot15}=\sqrt{16}\cdot\sqrt{15}=4\sqrt{15}\\\\\text{Answer:}\ 4\sqrt{15}\\\\\text{Used:}\ \sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}
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Why were Samaritans disliked by the Jews at the time?​
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Answer: they had a bad reputation

Step-by-step explanation:

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At a café, a cup of coffee costs $2.82. To use exact change, you must hold the number 2.82 in your head while sorting through yo
Stolb23 [73]

Answer:

Working memory

Step-by-step explanation:

Working memory is a system the brain uses  for temporarily storing and managing the information required to carry out complex cognitive tasks. The central executive part of the prefrontal cortex at the front of the brain is responsible for working memory. It serves as a temporary store for short-term memory, where information is kept available while it is needed for current reasoning processes.

So to be successful in holding the number 2.82 in my head while sorting, one must keep the information maintained in short-term storage by using one's working memory.

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3 years ago
In the diagram below, assume that all points are given in rectangular coordinates. Determine the polar coordinates for each poin
Korolek [52]

Step-by-step explanation:

We have cartisean points. We are trying to find polar points.

We can find r by applying the pythagorean theorem to the x value and y values.

r  {}^{2} =  {x}^{2}  +  {y}^{2}

And to find theta, notice how a right triangle is created if we draw the base(the x value) and the height(y value). We also just found our r( hypotenuse) so ignore that. We know the opposite side and the adjacent side originally. so we can use the tangent function.

\tan(x)  =  \frac{y}{x}

Remeber since we are trying to find the angle measure, use inverse tan function

\tan {}^{ - 1} ( \frac{y}{x} )  =

Answers For 2,5

{2}^{2}  +  {5}^{2}  =  \sqrt{29}  = 5.4

So r=sqr root of 29

\tan {}^{ - 1} ( \frac{5}{2} )  = 68

So the answer is (sqr root of 29,68).

For -3,3

{ -3 }^{2}  +  {3}^{2}  =  \sqrt{18}  = 3 \sqrt{2}

\tan {}^{ - 1} ( \frac{3}{ - 3} )  =  - 45

Use the identity

\tan(x)  =  \tan(x + \pi)

So that means

\tan(x)  = 135

So our points are

(3 times sqr root of 2, 135)

For 5,-3.5

{5}^{2}  +  {3.5}^{2}  =  \sqrt{37.25}

\tan {}^{ - 1} ( \frac{ - 3.5}{ - 5} )  = 35

So our points are (sqr root of 37.25, 35)

For (0,-5.4)

{0}^{2}  +  { - 5.4}^{2}  = \sqrt{}  29.16 = 5.4

So r=5.4

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4 0
3 years ago
How many feet are in 30 yards
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Answer:

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3. Equilateral Triangle : This describe triangle that has all its side equal i.e all three sides have equal length.  Also all angles are of equal sizes.

B. Classification by size of angle: There are four types of triangle base on classification by angle:

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