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-Dominant- [34]
3 years ago
13

Please help please help me

Mathematics
1 answer:
Gre4nikov [31]3 years ago
7 0

Answer:

ITS AAAAA

3546

56789

546

Step-by-step explanation:

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I NEED HELP ! I WILL CASH APP YOU !
Amanda [17]

Answer:B and D

Step-by-step explanation:big brain

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
I need help on this one
stiks02 [169]

Answer:

$7897.50

Step-by-step explanation:

using both compound interest and simple interest, they will need to pay $7897.50 by the end of a year

4 0
1 year ago
A sealed tank of water measures 10cm x 8 cm x 40cm. When it stands on one
Pavel [41]

Answer:

New height = 6

Step-by-step explanation:

The water is going to be the same volume no matter how the tank is orientated.

So you can do this 2 ways.

First way

Find the volume in the tank when the water goes up 24 cm on the height.

V = L*W*h

L = 8

W = 10

H = 24

V = 1920 cm^3

Now do it using the

L = 40

W = 8

h = ?

1920 = L * W * h

1920 = 40 * 8 * h

1920 = 320 * h

h * 320 = 1920

h = 1920/320

h = 6

Or you can do it without finding the 1920

L*W*h = L1 * w1 * h1

8*10*24 = 40 * 8 * h                                The 8's cancel

10*24 = 40*h                                           Divide both sides by 10

24 = 4h                                                    Divide by 4

h = 6

Same as you got before.

7 0
3 years ago
XY is formed by X(-9,-7) and Y (-3,5 is line j is the perpendicular bisector of XY
Mkey [24]
-12 because it just is
7 0
2 years ago
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