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Korvikt [17]
2 years ago
8

Please please help me with this question and show your steps nooooooow

Mathematics
1 answer:
vova2212 [387]2 years ago
8 0

Answer:

y = mx + c \\  - 3 = 2m + c \\  - 2 = 4m + c \\ subtract \: (2) - (1) \\ 1 = 2m \\ m =  \frac{1}{2}  \\  - 3 = 2( \frac{1}{2} ) + c \\ c =  - 4 \\ y =  \frac{1}{2}x - 4

alternative method

\frac{y-y_1}{x-x_1}=\frac{y_2-y_1}{x_2-x_1}

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On the unit circle, which of the following angles has the terminal point coordinates (√2/2,-√2/2)
aleksandr82 [10.1K]

Answer:

Option B

Step-by-step explanation:

A unit circle means radius of the circle = 1 unit

Let a terminal point on the circle is (x, y) and angle between the point P and x-axis is θ.

Center of the circle is origin (0, 0).

Therefore, ordered pair representing the terminal point will be (OP×Cosθ, OP×Sinθ) = (\frac{\sqrt{2} }{2},-\frac{\sqrt{2} }{2})

OP.Cosθ = 1×Cosθ = \frac{1}{\sqrt{2}}

Cosθ = \frac{1}{\sqrt{2}}

θ = \frac{\pi }{4}+2\pi n,  \frac{7\pi }{4}+2\pi n where n = integers

Similarly, OP×Sinθ = 1×Sinθ = -\frac{1}{\sqrt{2}}

Sinθ = -\frac{1}{\sqrt{2} }

θ = \frac{5\pi }{4}+2\pi n,  \frac{7\pi }{4}+2\pi n where n = integer

Common value of θ will be, θ = \frac{7\pi }{4}

Option B will be the answer.

5 0
3 years ago
Plz plz help is for my brother his in first grade
Mkey [24]

4+2 = 6    a a a a + a a = a a a a a a

2+4 = 6  a a + a a a a= a a a a a a


Tommy is correct  They are both equal to 6

7 0
3 years ago
Read 2 more answers
About how many grams of a 500 g sample of technetium-99 is left after 2 days
kogti [31]

Answer:

Step-by-step explanation:

1.95 g

7 0
3 years ago
I golf club charges $10 to join and
Jobisdone [24]

Answer: He could have played more than 3 games.

Step-by-step explanation:

Hi, to answer this question we have to write an inequality.

I golf club charges $10 to join and $5 per game: So, the cost of playing golf is equal to $10 (joining price) plus the product of the number of games played (x) and the price per game (5).

That expression must be higher than 25, since john paid more than $25.

Mathematically speaking

10+ 5 x > 25

Solving for x

5x >25-10

5x >15

x >15/5

x> 3

He could have played more than 3 games, since his cost was higher ( not equal or higher) than 25.

4 0
3 years ago
In a 30-60-90 triangle, the length of the long leg is 8. Find the length of the hypotenuse.
fiasKO [112]

Answer:

Step-by-step explanation:

In a 30-60-90 triangle, the ratio of the lengths of the angles' opposite sides are <em>1-√3-2</em>.

If the long leg is 8, then the short one is 8/√3, or <em>8√3/3</em>.

Therefore, the hypotenuse, which is <em>double the short leg</em>, is 16√3/3.

5 0
3 years ago
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