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Aleksandr [31]
3 years ago
15

Need help! Show work

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
8 0
The first step for each of these is adding or subtracting the coefficient to isolate your terms with variables. And then divide to isolate the variable itself.
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I need help with this problem
Arada [10]

Answer:

65.56°

Step-by-step explanation:

We know that if we take dot product of two vectors then it is equal to the product of magnitudes of the vectors and cosine of the angle between them

That is let p and q be any two vectors and A be the angle between them

So, p·q=|p|*|q|*cosA

⇒cosA=\frac{u.v}{|u||v|}

Given u=-8i-3j and v=-8i+8j

|u|=\sqrt{(-8)^{2}+ (-3)^{2}} =8.544

|v|=\sqrt{(-8)^{2}+ (8)^{2}} =11.3137

let A be angle before u and v

therefore, cosA=\frac{u.v}{|u||v|}=\frac{(-8)*(-8)+(-3)*(8)}{8.544*11.3137} =\frac{40}{96.664}

⇒A=arccos(\frac{40}{96.664} )=arccos(0.4138 )=65.56

Therefore angle between u and v is 65.56°

5 0
3 years ago
Pine Bluff Middle School is having its annual Spring Fling dance, which willcost $400. The student treasurer reported that the d
Anit [1.1K]
This year's dance needs 82 tickets.
5 0
3 years ago
Write an expression/equation/inequality represented by the following statements. NO NEED TO SOLVE
serious [3.7K]

Answer:

a. n - 11 \le 14

b. 5n - 10 < 4(n - 8)

Step-by-step explanation:

a. A number decreased by 11 is at most 14.

n - 11 \le 14

b. Ten less than five times a number is less than four times the number decreased by eight.

5n - 10 < 4(n - 8)

8 0
3 years ago
Please Answer All Of These Questions, It's About Finding The Volume, I think.
Marat540 [252]
1) 504cm
2) 216mm
3) 666ft
4) 301.44mm
7 0
3 years ago
This graph shows the water level in a bathtub, in inches, overtime (in minutes). what situation could match the graph?
user100 [1]

Answer:

Alison turns on the water and allows it to run in the tub for a few minutes. She then turns the water off while she runs to answer the front door. Alison comes back and allows water to run into the tub for a couple more minutes before she takes a short bath. After the bath, Alison allows the water to completely drain from the tub.

Step-by-step explanation:

took the k12 test hope this helps

4 0
3 years ago
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