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Viefleur [7K]
3 years ago
9

2cos²x+2√2sinx-4=0 Giúp tôi với

Mathematics
1 answer:
gogolik [260]3 years ago
5 0

Answer:

translate in eng

Step-by-step explanation:

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An airplane took 5 hours to travel 3,420 kilometers.how many kilometers did the plane travel in one hour
xxMikexx [17]

Answer:

684km per hour

Step-by-step explanation:

Time t = 5hrs

Distance d = 3420km

Speed v = distance/time

v = 3420/5

v = 684km/hr

4 0
4 years ago
Three consecutive even numbers who have a sum of 84
Maksim231197 [3]
84/3=28 The 3 consecutive numbers would be 26,28,and 30
5 0
4 years ago
Circle O is shown below. The diagram is not drawn to scale? If Angle r is 32, what is angle O?
liubo4ka [24]
We have to find the measure of angle O.
We already know that ∠R = 32°.
The measure of the inscribed angle ( here ∠ R ) is half the measure of the central angle ( here ∠ O ).
Therefore:
∠ O = 2 · 32° = 64°
Answer:
B ) 64°
5 0
3 years ago
What is the value of x in -5x-(-7-4x)-2(3x-4)
Otrada [13]

Answer:

x = 1

Step-by-step explanation:

-5x-(-7-4x)-2(3x-4)

-5x + 7 - 4x - 6x + 8          First step is to factor all the numbers out so you have          no parenthesis. In this case -(-7 just turns into + 7 because two negatives equal a positive. As well as -2*3x and -2*-4 which gives you -6x + 8.

-15x + 15                            In this step you combine like terms.

-15x = -15                            Next you move the whole number to the other side of the equation by subtracting it from both sides.

x = 1                                     Finally you divide -15 by -15 to get x by its self.

3 0
4 years ago
Find the value of the expression -1/3-(-5/12).
IRINA_888 [86]

Answer:

1/12

Step-by-step explanation:

6 0
3 years ago
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