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
avanturin [10]
3 years ago
7

HELP ME WITH MATH PLEASEEEEE PLEASE ILL MARK

Mathematics
2 answers:
Contact [7]3 years ago
6 0

Answer:6

Step-by-step explanation:

vodka [1.7K]3 years ago
4 0

Answer:

Your answer is right!

-130

Step-by-step explanation:

You might be interested in
What kind of transformation is illustrated in this figure
Nastasia [14]

Answer:

I think your answer is(C) rotation.

6 0
3 years ago
Is 1.403 bigger than 1.4
NISA [10]
Yes.    1.403  is  0.003  more than  1.4 .
5 0
4 years ago
Read 2 more answers
Suppose r(t) = (et cos t)i + (et sin t)j. Show that the angle between r and a never changes. What is the angle?
tatyana61 [14]

Answer:

Angle = Ф = cos^{-1}(0) = 0

Hence, it is proved that angle between position vector r and acceleration vector a = 0 and is it never changes.

Step-by-step explanation:

Given vector r(t) = e^{t}cost i + e^{t}sint j

As we know that,

velocity vector = v = \frac{dr}{dt}

Implies that

velocity vector = (e^{t} cost - e^{t} sint)i + (e^{t} sint - e^{t}cost )j

As acceleration is velocity over time so:

acceleration vector = a = \frac{dv}{dt}

Implies that

vector a =

(e^{t}cost - e^{t}sint - e^{t}sint - e^{t}cost )i + ( e^{t}sint + e^{t}cost + e^{t}cost - e^{t}sint )j

vector a = (-2e^{t}sint) i + ( 2e^{t}cost)j

Now scalar product of position vector r and acceleration vector a:

r. a = . \\

r.a = -2e^{2t}sintcost + 2e^{2t}sintcost

r.a = 0

Now, for angle between position vector r and acceleration vector a is given by:

cosФ = \frac{r.a}{|r|.|a|} = \frac{0}{|r|.|a|} = 0

Ф = cos^{-1}(0) = 0

Hence, it is proved that angle between position vector r and acceleration vector a = 0 and is it never changes.

4 0
3 years ago
Please I need help I’m not good at math
PolarNik [594]

Answer:

4

Step-by-step explanation:

because you do 2-1 and then 3 * 3 the equation would look like this

1 + (3*3) /

1+9/ 3

1 + 3

4

6 0
3 years ago
The plane formed by two number lines that intersect at the right angle
ella [17]

A coordinate plane have good day sir!

4 0
3 years ago
Other questions:
  • Dr. McDonald thinks that his group of earth science students is particularly special (in a good way), and he is interested in kn
    5·1 answer
  • What’s is 600 cm=_ m
    8·2 answers
  • The abbreviation for the dekaliter is dal true or false
    9·2 answers
  • Resolver: <br> [5+(-3+6)+(-2)]-[(-4+10)+(-3)-(-5)]
    15·1 answer
  • Name the marked angle in 2 different ways.
    6·1 answer
  • 5/8 + 3/10 = what would it be
    7·2 answers
  • Jada uses 7.4 pints of white paint and blue paint to paint her bedroom walls. 4 5 of this amount is white paint, and the rest is
    13·1 answer
  • What inequality describes the solutions of 2y less than or equal to 8?
    13·1 answer
  • What is the slope below?? Please answer quickly! Due tonight.
    14·1 answer
  • A baseball pitcher throws a fastball 60.5 feet in 2 seconds. If the ball travels at a constant speed per second, how can you wri
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!