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GalinKa [24]
3 years ago
7

Convert z = 9cos200° + 9isin200° from polar form to rectangular form.

Mathematics
1 answer:
Vlada [557]3 years ago
6 0

Answer:

z = -8.46 - 3.08i.

Step-by-step explanation:

cos 200 = -0.93969 so 9 * cos 200 = -8.46 to the nearest hundredth.

sin 200 = -0.3420 so 9 * sin 200 = -3.08 to nearest hundredth.

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Does (6,3) make the inequality 16x+20y≤5 true?
enyata [817]

Answer:

156 ≤ 5 (Which is wrong)

Step-by-step explanation:

You start with:

16(6)+20(3) ≤ 5

96+60 ≤5

156 ≤5

Which is wrong.

7 0
4 years ago
PLZ EXPLAIN. <br><br><br>what is the area of this figure?
BlackZzzverrR [31]

The area of this figure is 532m.

First you do the square which is 18 time 18 gets you 324m.

The for the first triangle you would do 18 times 16 then divide by 2 which is 144m.

For the last triangle you would do 16•8 div by 2 which will give you 64m.

Add them all up and you get 532m.

3 0
4 years ago
Work out 4 1/2 - 1 1/3
Ainat [17]

Answer: 19/6

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
When a certain type of thumbtack is​ flipped, the probability of its landing tip up​ (U) is 0.66 and the probability of its land
valina [46]
Answer: There are 4 possibilities. They are all listed below with their percents.

You can create a tree diagram to shows all of the possibilities. It will start with 2 branches and then each of those branches will have 2 branches.

The possibilities are:  UU, UD, DU, DD

To find the probabilities of each, you have to multiply the percent for each together.

UU = 0.66 x 0.66 = 0.4356
UD = 0.66 x 0.34 = 0.2244
DU = 0.34 x 0.66 = 0.2244
DD = 0.34 x 0.34 = 0.1156
6 0
3 years ago
Read 2 more answers
1. In a 30-60-90 triangle, the length of the hypotenuse is 6. What is the length of the shortest
PIT_PIT [208]

Answer:

b. 3

Step-by-step explanation:

In a 30°-60°-90° triangle, the short side is ½ the hypotenuse [the long side is double the short side].

30°-60°-90° Triangles

x√3 → long side

x → short side

2x → hypotenuse

45°-45°-90° Triangles

x → two legs

x√2 → hypotenuse

I am joyous to assist you anytime.

3 0
3 years ago
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