Answer this for me please

Answer:

Step-by-step explanation:

1. B

2. True

Answer: the awnser is D

Step-by-step explanation:

the awnser would be d becuase the others dont make sense at all enegry cannot be destroyed at all but it can change form hope this helps

Answer:

The magnitude of the velocity of the cars after they stick is approximately 3.7 m/s

Step-by-step explanation:

The given parameters are;

The mass of the cart traveling East, m₁ = 10.0 kg

The speed of the cart traveling East v₁=  5.00 m/s

The mass of the cart traveling at an angle of 55° m₂= 7.50 kg

The speed of the cart traveling at an angle of 55°, v₂ = 3.00 m/s

The component of the velocities of the cart raveling at an angle are given as follows;

v = 3.00 × cos(55°)·i + 3.00 × sin(55°)·j

The total momentum before collision = m₁ × v₁ + m₂ × v₂  by substitution is therefore;

m₁ × v₁ + m₂ × v₂ = 10 × 5.00·i + 7.5 × (3.00 × cos(55°)·i + 3.00 × sin(55°)·j)

The total momentum after collision = (m₁ + m₂) × v₃

By the principle of the conservation of linear momentum, whereby the momentum is conserved, we have;

m₁ × v₁ + m₂ × v₂ = (m₁ + m₂) × v₃

10 × 5.00·i + 7.5 × (3.00 × cos(55°)·i + 3.00 × sin(55°)·j) = (10 + 7.5) × v₃

50.00·i + 12.91·i + 18.43·j = 17.5·v₃

62.91·i + 18.43·j = 17.5·v₃

∴ v₃ = (62.91·i + 18.43·j)/17.5 ≈ 3.59·i + 1.05·j

Therefore, the magnitude of the velocity of the cars after they stick = √(3.59² + 1.053²) ≈ 3.7

The magnitude of the velocity of the cars after they stick ≈ 3.7 m/s.

Answer: x>5

If I Helped, Please Mark Me As Brainliest, Have A Great Day :D

Answer: x is greater than 5

Step-by-step explanation:

9(2(5)-9)-5 greater than 4

9(10-9)-5 greater than 4

9-5 greater than 4

4 greater than 4

So x MUST be greater than 5

Answer:

I believe it does because the top numbers go up 3 times and the bottom goes up 6

Step-by-step explanation:

Answer:

i think it does

x goes up by 3 every time

y goes up by 6 every time

hope this helps and feel free to give brainiest

Answer:

-6

Step-by-step explanation:

this is written in point slope form, y=mx+b

we just need to recognize which numbers represent which variables,

(the "b" in the equation is the y-intercept)

Let's line them up to find out our "b"

y=-4x-6

y=mx+b

the -6 is where the "b" is located

Hope this helped and feel free to comment or ask questions!

Answer:

The answer is 246 simplified so A

Step-by-step explanation:

Answer:

3:2

Step-by-step explanation

18:12, divide both by 6, 18/6=3, 12/6=2, ratio simplified is 3:2

Answer:

Step-by-step explanation:

12:18

2:3

Answer:

I think the answer is C

Answer:

20 leaves

Step-by-step explanation:

Step one:

given data

we are told that the amount paid =$30

The mean man deducts $3 for every 2 leaves seen on the lawn.

we are expected to estimate the number of leaves that can amount to a $30 deduction.

Step two:

let the number of leaves be x

so if 2 leaves are worth $3 deductible

the x leave will worth $30 deductible

cross multiply we have

x=30*2/3

x=60/3

x=20 leaves

Answer:

try y=2x+4

Step-by-step explanation:

hope it helps :)

Answer:

The height of the rocket is greater than or equal to 1.039 feet during first 19.936 seconds.

Step-by-step explanation:

The height of the rocket launched from the ground is modelled after the following expression:

[tex]h(t) = -16.087\cdot t^{2}+320\cdot t +15[/tex] (1)

Where:

[tex]t[/tex] - Time, measured in seconds.

[tex]h[/tex] - Height, measured in feet.

After a careful reading to the statement, we translate all relevant information into the following mathematical inequation:

[tex]-16.087\cdot t^{2}+320\cdot t +15\ge 1.039[/tex] (2)

After some algebra, we get the equivalent inequation:

[tex]-(16.087\cdot t^{2}-320\cdot t -13.961)\ge 0[/tex]

[tex]16.087\cdot t^{2}-320\cdot t -13.961 \le 0[/tex]

[tex](x-19.936)\cdot (x+0.044)\le 0[/tex]

Which means that the following conditions must be observed to satisfy the inequation above:

[tex]x-19.936\le 0\,\land\,x+0.044\ge 0[/tex]

[tex]x\le 19.936\,s\,\land\,x\ge -0.044\,s[/tex]

[tex]0\,s\le x \le 19.936\,s[/tex]

The height of the rocket is greater than or equal to 1.039 feet during first 19.936 seconds.

Answer:

Jessica lived 10 months in Spain and 8 months in Colombia.

Step-by-step explanation:

Let x be the months Jessica spent in Spain, and y the months she spent in Colombia:

   1. x + y = 18

Using the information of words per month learned in each country, we can also write the equation:

    2. 160 * x + 200 * y = 3200

So now we have a system of two equations and two unknowns.

First we express y in terms of x, in the first equation:

We replace y in the second equation:

And solve for x:

Finally we use that value of x in the first equation and solve for y:

Jessica lived 10 months in Spain and 8 months in Colombia.

Answer:

the number in front of a term is called a convention examples of single terms three times is a single term the three contents so then it would probably be 24 because 7284 time be planted in their preferred method to show multiplication example 3 evaluate the expression and then you go wide equals 6 and 24 hope this helps it's an example not the real answer though LOL

Answer:

-x-y=1

Step-by-step explanation:

just plug in the numbers.

-x-y

-(-8)-7

8-7

1

Answer:

(-3,3)

Step-by-step explanation:

y=3

x=−3

Answer:

x=−1/10 y+ −27/10

x=−1/4 y+ −9/4

Step-by-step explanation:

−10x−y=27

Step 1: Add y to both sides.

−10x−y+y=27+y

−10x=y+27

Step 2: Divide both sides by -10.

−10x /−10= y+27 /−10

x=−1/10 y+ −27 /10

−4x−y=9

Step 1: Add y to both sides.

−4x−y+y=9+y

−4x=y+9

Step 2: Divide both sides by -4.

−4x /−4= y + 9/−4

x= −1/4 y + -9/4

Answer:

SAS

Step-by-step explanation:

The sides are indicated to be congruent from triangle to triangle.

The intersecting angle are equal.  Therefore the triangle is congruent due to Side Angle Side

yes because when filling in the unknown (3*2-4=2) gets you the answer of 2.

Answer: Yes, it is a solution.

Step-by-step explanation:

3(2)=6-4=2

Answer:

2

Step-by-step explanation:

Answer:

2/19

Step-by-step explanation:

x+2 (9x) = 2

x+18x=2

19x=2

19x/19=2/19

2/19

Answer:

x = 2/19

Step-by-step explanation:

Please mark brainliest

Answer:

15%

Step-by-step explanation:

Answer:

15%

Step-by-step explanation:

Answer: BRAINLIEST PLEASE

first question welcome to brainly tha world of trolls thanks for the free pionts ............ hehehe im kidding here is the real answer. The first one

Step-by-step explanation:

i took the test

Answer:

C y cause it was already there plus ik super late but hey sum points

Step-by-step explanation:

Answer:

598.95

Step-by-step explanation:

multiply the 3 numbers for the m3

Answer:

3.15

Step-by-step explanation:

45% can be converted into 0.45 or 9/20. You either multiply 7 by 0.45 or 9/20 to get your answer.

Answer:

3.15 is correct

Step-by-step explanation:

The person above me has all the work needed

Answer:

0.5625

Step-by-step explanation:

Answer:

i think b if im wrong

sorry]

iStep-by-step explanation:

Answer:

[tex]0 \leq x \leq 3[/tex]

Step-by-step explanation:

Given

[tex]f(x) = 25x + 60[/tex]

Required

Determine the domain

The domain, in this case means the possible values of x

From the question, we understand that x represents minutes

Since it's impossible to have a negative minutes, then x starts at 0

i.e. [tex]x \geq 0[/tex] or [tex]0 \leq x[/tex]

Also, from the question, we understand that the time can not be more than 3 minutes

i.e.

[tex]x \leq 3[/tex]

Now, we have two inequalities:

[tex]0 \leq x[/tex] and [tex]x \leq 3[/tex]

Which can be written as:

[tex]0 \leq x \leq 3[/tex]

Hence, the domain is: [tex]0 \leq x \leq 3[/tex]

Answer:

-3, 3

Step-by-step explanation:

Answer:

Nancy

Step-by-step explanation:

Her pumpkin weighed more