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Aleksandr [31]
3 years ago
5

Please help!!!!!!!! :)

Mathematics
1 answer:
Contact [7]3 years ago
4 0
Slope is the difference in y over the difference in x, or 23--21 / -4-7 = 44/-11 = -4
using the first point we get
y--21=-4(x-7)
y+24 -4(x+ -7)

-7 goes in the? box
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A car is accelerated from rest to a velocity of 25 m/s in 6.0 seconds. What is its average
sukhopar [10]

Answer:

Initial- Velocity = 0\\Final- velocity = 25m/s\\Time =  6.0\\Acceleration = \frac{Final-velocity-initial-velocity}{time} \\Acceleration = \frac{25-0}{6} \\Acceleration = \frac{25}{6} \\Acceleration = 4.167

Step-by-step explanation:

3 0
3 years ago
find the angle between vectors a =(1,2) and b = (1,-1/2). Brainliest for correct answer. Look at photo.
rosijanka [135]

Answer:

  90°

Step-by-step explanation:

The angle between the vectors can be found any of several ways. Here, we observe that the segments from the origin to the two points are at right angles to each other. (Their slopes are opposite reciprocals.) Hence the angle between the vectors is 90°.

__

The slope to point 'a' is y/x = 2/1 = 2.

The slope to point 'b' is y/x = (-1/2)/1 = -1/2.

The product of these slopes is (2)(-1/2) = -1, indicating the vectors are perpendicular. The angle between them is 90°.

__

We can also use the trig formula for the tangent of the difference of angles.

  tan(α-β) = (tan(α) -tan(β))/(1 +tan(α)tan(β))

The tangents are the slopes, calculated above, so we have ...

  tan(α -β) = (2 -(-1/2))/(1 +(2)(-1/2)) = (5/2)/0 = <em>undefined</em>

The tangent is <em>undefined</em> for angles that are odd multiples of 90°. The angle between the vectors is 90°.

8 0
2 years ago
You see Bonnie rock climbing El Capitan. On your telescope is a clinometer. The angle
Marat540 [252]

Answer:

≈ 345.8 ft

Step-by-step explanation:

There is a right triangle formed by Bonnie's height (h) the ground and the angle of elevation.

Using the tangent ratio in the right triangle

tan20° = \frac{opposite}{adjacent} = \frac{h}{950} ( multiply both sides by 950 )

950 × tan20° = h , thus

h ≈ 345.8 ft ( to 1 dec. place )

8 0
3 years ago
Pls say the answer to me​
lozanna [386]

Answer:

Sohan has read more pages and Sonali was more faster

7 0
2 years ago
What is the lcm for 3/4and 1/2​
ioda

Answer:

1 1/2

Hope that helps!

Step-by-step explanation:

4 0
3 years ago
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