1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Fed [463]
3 years ago
8

Find the angle between the given vector in degrees. u=<6, 4>, v=<7, 5> HELPPPPPPPPPP

Mathematics
1 answer:
Paladinen [302]3 years ago
7 0

Recall that

\vec a\cdot\vec b=\|\vec a\|\|\vec b\|\cos\theta

where \theta is the angle between the vectors \vec a,\vec b whose magnitudes are \|\vec a\|,\|\vec b\|, respectively.

We have

\langle6,4\rangle\cdot\langle7,5\rangle=\sqrt{6^2+4^2}\sqrt{7^2+5^2}\cos\theta

\cos\theta=\dfrac{31}{\sqrt{962}}\implies\theta\approx88.2^\circ

You might be interested in
Find the derivative of the function f(x)= (x^2-x) ^2
Virty [35]
(2x-1)(2x^2-2x) I THINK
3 0
3 years ago
Read 2 more answers
|−9| − |−5| i hate next gen but help pls
Setler79 [48]

Answer:

4

Step-by-step explanation:

\mathrm{-9 = 9, -5 = 5,\:because\:they\:are\:in\:absolute\:value}\\9 - 5 = 4

8 0
1 year ago
Read 2 more answers
As a means to obtain financial support from French towns, the Capetian Kings?
earnstyle [38]
D. Developed common law
6 0
3 years ago
Read 2 more answers
At a baseball game, 3 drinks and 4 hotdogs cost $15.00. At the same game, 3 drinks and 1 hotdog cost $10.50. Find the cost for a
Serhud [2]

Answer:

$3

Step-by-step explanation:

Given data

Let the cost of drinks be x

and the cost of hotdogs be y

so

3x+4y=15-------1

also

3x+y= 10.5------2

solve 1 and 2

 3x+4y=15

-3x+y= 10.5

     3y= 4.5

divide both sides by 3

y= 4.5/3

y= $1.5

Put y= 1.5 in 1

3x+4(1.5)=15

3x+6= 15

3x=15-6

3x= 9

x= 9/3

x= $3

Hence the cost of a drink is $3

8 0
3 years ago
Find each quotient. Write in simplest form. keep answer as fraction - not decimal
kirill [66]

So we are given the expression:

\frac{mn^{2}}{4} ÷ \frac{m^{2}n}{8}

When we divide fractions, we must flip the second term and change the sign to multiplication:

\frac{mn^{2}}{4} *\frac{8}{m^{2}n}

And then we multiply across:

\frac{mn^{2}}{4} *\frac{8}{m^{2}n}= \frac{8mn^{2}}{4m^{2}n}

Then we can break apart all of the like variables for simplification:

\frac{8mn^{2}}{4m^{2}n}=\frac{8}{4} * \frac{m}{m^{2}} *\frac{n^{2}}{n}

When we simplify variables through division, we subtract the exponent of the numerator from the exponent of the denominator. So we then have:

\frac{8}{4} =2

\frac{m}{m^{2}}=m^{-1} =\frac{1}{m}

\frac{n^{2}}{n}=n^{1}=\frac{n}{1}

So then we multiply all of these simplified parts together:

\frac{2}{1}*\frac{1}{m}*\frac{n}{1}   =\frac{2n}{m}

So now we know that the simplified form of the initial expression is: \frac{2n}{m}.

3 0
3 years ago
Other questions:
  • Jim &amp; Jesse each had the same amount of money. Jim spent $58 and Jesse spent $37. Afterward, the ratio of Jim's money to Jes
    7·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
    6·1 answer
  • Evaluate the following expression: -2|9|.<br><br> 18<br> -11<br> -18<br> 11
    5·2 answers
  • My mom ran errands for one hour and 45 minutes. If she left at 2:15 pm.,what time did she retured
    6·1 answer
  • Prove algebraically if the following functions are even, odd, or neither. (12 points)
    8·1 answer
  • Which equation has no solution?
    7·1 answer
  • Greatest to least 3.02 , 3.002 , 3.001
    13·2 answers
  • I beg someone help.
    14·2 answers
  • I need an answer as soon as possible
    7·2 answers
  • 10. Write the equation of the line that is perpendicular to the line y = -1/5x +9 and passes through the point (-2,-2).
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!