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2 years ago

8

The cartesian coordinates of a point are given. (a) (2, −2) (i) find polar coordinates (r, θ) of the point, where r > 0 and 0

≤ θ < 2π.

1 answer:

lora16 [44]2 years ago

5 0

It would be r,o beacuse of the grid cordinates in the sentence

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What is -4+4 showing additive inverse

rodikova [14]

Answer:

THe answer is 4 because is positive

Step-by-step explanation:

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2 years ago

Please help <br> I will mark brainliest<br> AOD is 62 degrees btw

sertanlavr [38]

Step-by-step explanation:

a)

DA is tangent and at point A and OA is radius of the circle.

$\therefore OA \perp DA\\\therefore \angle OAD = 90°\\In\: \triangle AOD\\m\angle AOD= 180° - (m\angle OAD + m\angle ODA) \\\therefore m\angle AOD= 180° -(90°+28°)\\\therefore m\angle AOD= 180° -118°\\\huge \red {\boxed {\therefore m\angle AOD=62°}} \\\\b) \\\because m\angle ABC = \frac{1}{2} \times m\angle AOD\\$

(Angle formed at the circumference of the circle is half the angle formed at the center of the circle)

$\therefore m\angle ABC = \frac{1}{2} \times 62°\\\huge \red {\boxed {\therefore m\angle ABC = 31°}}$

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3 years ago

Raj reads 7\12 of his book before dinner and another 2\12 of his book after dinner

lina2011 [118]

Answer:

he would have had read 9/12 of the book in total

Step-by-step explanation:

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2 years ago

Eli read 1 book in 5 months If he read constantly how many books did he read?

Ksivusya [100]

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(life span - age when he started reading)/5months =number of books he read

Step-by-step explanation:

(life span - age when he started reading)/5months =number of books he read

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1 year ago

if the nth term of a sequence is 2n+2n squared, find the first 3 terms and the 10th term please help

marishachu [46]

Answer:

3rd term: 24

10th term: 220

Step-by-step explanation:

<em>For the 3rd term</em>

2*3 + 2*(3^2) = 6 + 2*9 = 6 + 18 = 24

<em>For the 10th term</em>

2*10 + 2*(10^2) = 20 + 2*100 = 20 + 200 = 220

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3 years ago