how do you solve this?? pls add your work as well..

Answers

Answer 1

Answer:

[tex](A) - \sqrt2[/tex]

Step-by-step explanation:

Let's find the velocity and acceleration first:

[tex]v(t) = \dot x(t) = cos\ t -( -sin \ t) = cos \ t + sin \ t\\a(t) = \ddot x(t) = -sin\ t + cos\ t = cos\ t - sin t[/tex]

(you can also rewrite the position as [tex]\sqrt 2 sin(t-\frac\pi4)[/tex] and determine velocity and acceleration from there, but I do prefer handling it as a sum for the sake of the derivatives)

At this point, the first time when the velocity is 0 is given by

[tex]cos\ t + sin\ t = 0 \rightarrow cos\ t = - sin t \rightarrow tan\ t = -1 \\t = \frac34 \pi = 2.36s[/tex]

At this point the acceleration is (let's use the first value of t for the sake of our sanity!)

[tex]cos (\frac34 \pi) - sin \frac 34 pi = -\frac1{\sqrt2} -\frac1{\sqrt2} = \sqrt 2 = -1.41[/tex]

Related Questions

Please answer. Geometry problem. Unit: Degrees

Answers

Answer:

Step-by-step explanation:

∠C is common in both triangles

equate them

∠C = 180- (x + 100) = 180 - ( 4x + 49)

x + 100 = 4x + 49

100 - 49 = 3x

51 = 3x

x = 51/3 = 17

An electrician needs 1/2 of a roll of electrical wire to wire each room in a house. How many rooms can he wire with 1 1/2 rolls of wire?

I will give brainliest for answer and explanation

Answers

Answer: The number of rooms that can be wire with available rolls is 6 rooms Given as The quantity of roll of electrical wire does

Step-by-step explanation:

Joleen and Pablo want to fertilize a rectangular garden
with an area of A square feet. They know that 5 cups of
fertilizer will cover an area of 240 square feet. They each
write an equation to represent the relationship between
the area, A, and the number of cups of fertilizer, c.
Joleen's equation: A = 480
Pablo's equation: c = 45
:
-А
Which of the equations is correct? Explain how you know.

Answers

Answer: A

Step-by-step explanation:

Because 489 + 45

is -1/8 greater than -1/10

Answers

Answer:

false

Step-by-step explanation:

-1/8 = -0.125

-1/10 = -0.100

as it is negative

-0.125 < -0.1

so it is false

Type the correct answer in each box

The point on the number line shows the opposite of ____, or the opposite of the opposite _____.

Answers

If your answers are supposed to be numbers then it'd be 2.5 and -2.5

Answers:
A. 113 cm^3
B. 141 cm^3
C. 565 cm^3
D. 126 cm^3

Answers

Answer:

Step-by-step explanation:

what is the last number

lol

Answers

Answer:

Infinity probally. But there is a number called the god's number reported by Galileo in which he states a number in which the enitre universe fits.

help me out please i dont understand this

Answers

Answer:

x=7°

Step-by-step explanation:

From the picture it tells us that all side are equal

so that means every side is 60°

Let's make an equation

9x-3°=60°

add 3 on both sides

9x=63°

divide both sides by 9

x=7°

If Ricardo walks 6 miles in 101 minutes, then how far will Ricardo walk in 110 minutes?

Write answer as a integer or a reduced fraction.

Answers

Step-by-step explanation:

Given:

6 miles ⇒ 101 minutesx miles ⇒ 110 minutes

Find the values of x using proportions:

x = 6*110/101x = 660/101x = 6 54/101 miles

x = 6.53 miles

a population of deer is increasing at a rate of 12% per year, if this rate of growth remains the same, and the population starts out with 250 deer approximately how many deer will there be in 5 years?

Answers

Answer:

first calculate the number of deer's represented by the 12% that is (12*250)/100

Second mutipy the results that is the number of deer's in one year by 5 years that is (40*5)

Third and last add the second results to the approximated original number of deers to find the total popullation in the five years that is (200+250=450)

Step-by-step explanation:

6^3 multiplied by (1/2)^3

Answers

Step-by-step explanation:

6³×(½)³

=> 216÷8 = 27.

hope this helps you.

Due tomorrow: Answer question 19 with steps

Answers

Refer to the attachment

Violet is playing a board game with her friends. She earned 78 points during the game, and she receives a game-end bonus for achieving her secret objective. With her bonus, Violet came in second place with 91 points. Let b be the number of points Violet earned for the game-end bonus. Write and solve the equation for b.

Answers

Answer:

78 + B = 91...

91 - 78 = B

91 - 78 = 13

B = 13

Step-by-step explanation:

Help help help help help please math I’m stuck

Answers

Answer:

A' (-2, -4)

B' (1, -8)

C' (-3, -16)

Step-by-step explanation:

Since k is the vertical scale factor, multiply all y coordinates by 4. All x coordinates will remain the same.

help me with math and ill mark brainliest

Answers

Answer for this question is b) m3=96°

When a common denominator is found for the fractions 2/5 and 5/6, what will the equivalent fractions be

Answers

The equivalent fractions will be 12/30 and 25/30

Given the fraction 2/5 and 5/6

Their respective denominator are 5 and 6

To make them the same, we will multiply the value of 5 by 6 and the value of 6 by 5

For the deniminator of 5, the equivalent denominator is (5*6) = 30

For the denominator of 6, the equivalent denominator is (6*5) = 30

Equivalent fraction for 2/5 = 2/5 * 6/6

Equivalent fraction of 2/5 = 12/30

Equivalent fraction for 5/6 = 5/6 * 5/5

Equivalent fraction of 2/5 = 25/30

Hence the equivalent fractions will be 12/30 and 25/30

Learn more on fractions here: https://brainly.com/question/17743912

--8
- 2
4
10
y
8
1
re
-6
—13

Answers

Step-by-step explanation:

sorry I can't find the slope of x y

but I can tell the formula

m=y2-y1/x2-x1

- Kerry multiplied 143.64 X 10 and got 14.364. Is Kerry's answer correct?
If not, tell what Kerry might have done incorrectly.

Answers

Is the wrong answer, the correct answer is 1,436.4

please i need help

How many rows of seats are inside the theater? Enter your answer in the box.

Answers

Answer:

24 rows

Step-by-step explanation:

384 seats in total, and 16 chairs in a row, so 384/ 16=

24 rows

Hope this helps!

LMK if it does

pls help me right now!

and pls show your solution properly

Answers

I'm not good in math ok bye

A) Atra = 0.5 ( 7 + 3 ) x 3 = 15 cm^2

B) Atri1 = 1/2 x 3 x 2 = 3 cm^2

Atri2 = 1/2 x 3 x 2 = 3 cm^2

Arec = 3 x 3 = 9 cm^2

Atra = Atri1 + Atri2 + Arec = 3 + 3 + 9 = 15 cm^2

ok done. Thank to me :>

100 POINTS!
A local theater has a maximum capacity of 1000 people. For their latest production, adult tickets cost $25 and youth tickets cost $12.5. The theater needs to make at least 15,000 for the show to continue.
Write and graph a system of linear equations, and write two possible solutions.

Answers

Answer:

a+y≤1000 and 25a+12.50y>15000

Step-by-step explanation:

Evaluate the expression 8+-9

Answers

Answer:

8+-9=-1

Step-by-step explanation:

evaluated

Answer:

8+(-9)=8-9=-1

Step-by-step explanation:

to get -9 you multiply -×+ which is -

i need help ! :) i will give brainliest if u dont troll and actually help

Answers

Answer:

Step-by-step explanation:

150 + 50 is $200.

350 - 200 is $150.

So that leaves 150 dollars left.

150/3 is 50 people.

Answer:

50 guest is the answer.

Step-by-step explanation:

...so:

$350-$150 for the DJ

$200-$50 for the cake.

and, $3 per party guest for food.

That would be:

$150/$3 = 50 guest.

Choose the missing step in the given solution to the
inequality -X - 10 > 14 + 2x.
_X
- 10 > 14 + 2x
-3X - 10 > 14
x<-8
0 -3x > 24
0 -3x > 4
0-3x>.
- 4
0 -3x < 24

Answers

Answer:

Step-by-step explanation:

36=12d is a proportional or Non-proportional? Explain

Answers

Answer:

non-proportional

Step-by-step explanation:

This equation is non-proportional. A proportional equation contains 2 variables where one is proportional to the other. An example would be:

y = 5x

Y is proportional to the value of X at a rate of 5. 5 is the "constant of variation", or the "constant of proportionality"

36 = 12d is not proportional because there is only one variable. That variable can be solved for, giving only one solution.

proportional:

"corresponding in size, degree or intensity"

"having the same or a constant ratio"

how do you find the y intercept on a table

Answers

Answer:

y-intercept is 10. The y-intercept is where the line crosses with the y-axis line. The y-axis line is when x = 0.

Part A: Solve −mk − 90 > 85 for m. Show your work. (4 points) Part B: Solve 3c − 5f = 55 for f. Show your work. (6 points) (10 points)

Answers

Answer:

m < -175/k

f = -11 + [tex]\frac{3}{5}[/tex]c

Step-by-step explanation:

Part A:

-mk - 90 > 85

add 90 to each side to get:

-mk > 175

divide each side by -k to get:

m < -175/k

(inequality symbol switched because we divided by a negative)

Part B:

3c - 5f = 55

subtract 3c from each side to get:

-5f = 55 - 3c

divide each side by -5 to get:

f = -(55 - 3c) / 5 or -11 + [tex]\frac{3}{5}[/tex]c

Please help thank you! Solve for x and y

Answers

Answer:

x = 2

y = 7

I aced this lesson in 6th grade.

Step-by-step explanation:

hope this helps. . . <3

good luck! uωu

Answer:

Step-by-step explanation:

All 4 sides are equal. (They are marked that way).

8x = 5x + 6 Subtract 5x from both sides

8x - 5x = 5x - 5x + 6 Combine

3x = 6 Divide by 3

3x/3 = 6/3

x = 2

Consecutive angles of a rhombus are supplementary

97 + 12y - 1 = 180 Combine

96 + 12y = 180 Subtract 86 from both sides

12y = 180 - 96

12y = 84 Divide by 12

y = 84/12

y = 7

URGENT: HELP ME WITH THE MATH PROBLEMS!!

(Note This Needs To Be Done Tonight!)

Answers

Answer:

1. 3 and 1/5 improper: 11/15

2. 3 and 3/4 improper: 15/16

3. 1 and 2/3 improper: 5/6

4. 2 and 1/2 improper: 5/6

5. 3 and 2/10 improper: 32/40

6. 3 and 3/9 improper: 30/36

7. 1 and 2/6 improper: 8/12

Elias is making copies of a business meeting agenda. He needs one copy per person. If there are 3 representatives from each department attending, and there are 9 departments total, how many copies does he need to make?

Answers

Answer:

27 copies

Step-by-step explanation: since there are 3 representatives for each department and there are 9 then you multiply 9 and 3 to get your answer.

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