if your friend said that his toy can accelarate uniformly at 1.5m/s²,what is its initial speed if you record its finalspeed as7.5m/s after 5.0s running?​

Answers

Answer 1

[tex]a = \frac{vf - vi}{t} [/tex]

[tex]1.5 = \frac{7.5 - vi}{5.0} [/tex]

[tex]1.5(5.0) = \frac{7.5 - vi}{5.0} (5.0)[/tex]

[tex]7.5 = 7.5 - vi[/tex]

[tex]7.5 - 7.5 = 7.5 - 7.5 - vi[/tex]

[tex]0 = vi[/tex]

The car's initial speed is 0 m/s

//

[tex]a = \frac{7.5 - 0}{5} [/tex]

[tex]a = 1.5 [/tex]


Related Questions

Will has a spinner with six equal sections numbered one through six. If Will spins the spinner 150 times, how many times can he expect to spin a number less than 5?

A)30
B)110
C)100
D) 25


pls hurry!!!

Answers

Answer:30

Step-by-step explanation:

30 times he can expect to spin a number less than 5.

What is Probability?

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.

The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.

The degree to which something is likely to happen is basically what probability means.

Given:

A spinner with six section numbered from 1 to 6.

total number of times spins = 150

So, the number of times the number comes less than 5 is

= 150 x 1/5

= 150/5

= 30

Learn more about Probability here:

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Which ordered pair is a solution of the equation? 5x+2y=12

Answers

Answer:d

Step-by-step explanation:i dont know

Wind farms are a source of renewable energy found around the world. The power P (in kilowatts) generated by a wind turbine varies directly as the cube of the wind speed v (in meters per second). If a turbine generates 700 kW in a 12 m/s wind, how much power does it generate in a 6 m/s wind?

(The formula for P as a power function of v is P = a ⋅ v3.


A. 88 kW

B. 175 kW

C. 125 kW

D. 1050 kW

Answers

Answer:

New power = 88 Kw (Approx.)

Step-by-step explanation:

Given:

P = a(v³)

Old power p = 700 Kw

Old wind speed v = 12 m/s

Find:

New power when v = 6m/s

Computation:

P = a(v³)

700 = a(12³)

a = 0.4050 m²

New power = a(v³)

New power = (0.4050)(6³)

New power = 87.48

New power = 88 Kw (Approx.)

Can someone help me with this thingy thing thing

Answers

Answer:

A or D your choice

Step-by-step explanation:

The set of numbers 1, 7, 11 and 36 contains values for n. What value of n makes the equation below true? 4n + 8 = 36

A) 1
B) 7
C) 11
D) 36

Answers

The answer is B
4(7)+8=36
28+8=36
36=36

The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23h√

, where h

is the height (in feet) above the transmitter.


Estimate the maximum distance x

(in nautical miles) between the plane that is receiving the signal and the transmitter. Round your answer to the nearest tenth.

Answers

Answer:

182.4

this website deleted my paragraph... TLDR; 182.4 is the answer

When taking notes from a book, story, or other selection the source should be?
A. simple
B. dependable
C. easy to copy

Answers

Answer:

b

Step-by-step explanation:

Answer:

B. dependable

Step-by-step explanation:

well good luck

1/2(5x−8)=21 solve for x and brainliest

Answers

Answer:

x=10

Step-by-step explanation:

see picture for explanation

Factor the following using identities wherever necessary
1) x² + 8x
2) x2 - 4x
3) x² + x - 2
4) x2 - 9
5) x² + 22x + 121
6) x² - 8x + 16​

Answers

Answer:

1. x(x+8)

2. x(x−4)

3. (x−1)(x+2)

4.(x+3)(x−3)

5. (x+11)(x+11)

6. (x−4)(x−4)

Step-by-step explanation:

properties of isosceles triangle:)

i’ll give a brainiest

Answers

Answer:

2 sides re equal

and 2 base angles are equal

Mark it as the brainliest answer

please thanks

Paula bought a ski jacket on sale for $4 less than half of the original price she paid $87 for the jacket what was the original price

Answers

Answer:

Original price was $91

Answer:

$182

Step-by-step explanation:

I hope this helps <3

If 8 men on a construction crew make up 40% percent of the entire crew, how many people are in the crew?

Could someone explain this question to me? I don't get it at all

Answers

Answer:

Step-by-step explanation:

Since 40% of the crew are men, which means n. 40=8 n=8/. 40 n=20 total number of crew 20 - 8=12 are women

x(0.4)=8
x=8/0.4
x=20
so there’s 20 people in the crew
hope this helps !

A cell phone provider offers a plan that costs $20 per month plus $0.20 per text message sent or received. A comparable plan costs
$30 per month but offers unlimited text messaging. Complete parts a. and b. below.
a. How many text messages would have to be sent or received in order for the plans to cost the same each month?
In order for the plans to cost the same.
text messages would have to be sent or received
b. If you send or receive an average of 200 text messages each month which plan would you choose and why?​

Answers

Answer:

Step-by-step explanation:

a)

30=20+0.2m

10=0.2m

50=m

So after sending 20 messages the plans would cost the same.

b)

Obviously from the first part that the unlimited plan is cheaper when sending 200 messages, but the costs numerically would be.

Unlimited plan costs $30 while the other plan costs

20+0.2(200)=$60

They would have sent 5

A drain empties a bathtub at a rate of 0.5 gallons per minute. A
30-gallon tub was full and the shower head was turned off,
how long would it take the tub to empty through the partly
unplugged drain?

Answers

I’m gonna say an hour

Find the values of x and y. Write your answer in simplest form.
5
Х
150°
The value of x is
The value of y is

Answers

Value of x is 5 radical 3
Value of y is 10


[tex] \sqrt{8} [/tex]

Answers

[tex] \sqrt{8} =2 \sqrt{2} [/tex]

Explanation :

[tex] \sqrt{8} [/tex]

[tex] = \sqrt{(4 \times 2)} [/tex]

[tex] = \sqrt{4} \times \sqrt{2} [/tex]

[tex] = 2 \sqrt{2} [/tex]

Help with limits will give brainliest

Answers

Answer:

it because it prove the first condition so options c correct

A smartphone has a screen that has a width of x and a height that is 1.8 times the width. The outer dimensions of the phone are shown.





Write an expression for the portion of the phone that is not occupied by the screen. Assume that the phone is rectangular.

Answers

Answer: 4.8x+3

Step-by-step explanation:

The portion of the phone that is not occupied by the screen is 4.9x + 3 cm².

What is Surface Area?

For each three-dimensional geometrical shape, surface area and volume are determined. The area or region that an object's surface occupies is known as its surface area. Volume, on the other hand, refers to how much room an object has. There are numerous shapes and dimensions in geometry, including sphere, cube, cuboid, cone, cylinder, etc. Each form has its own volume and surface area. Nevertheless, we can only estimate the area that two-dimensional figures like a square, circle, rectangle, triangle, etc. cover; there is no volume available.

As per the given data:

The width of the screen = x cm

Height of the screen = 1.9 times the width = 1.9x

Dimensions of the phone are given in the diagram.

The area of the screen = height × width

= 1.9x × x = 1.9x² cm²

The area of the phone = (1.9x + 3)(x + 1)

= 1.9x² + 1.9x + 3x + 3

= 1.9x² + 4.9x + 3 cm²

Area of the phone not occupied by screen:

= area of the phone - area of the screen

= 1.9x² + 4.9x + 3 - 1.9x²

= 4.9x + 3 cm²

Hence, the portion of the phone that is not occupied by the screen is 4.9x + 3 cm².

To learn more about surface area, click:

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(The given question is incomplete, the complete question is given below)

help plz i’ll give extra points

Answers

Answer:

1/1

Step-by-step explanation:

cause i just did it llamo

y=x+5

Using rise over run to get m (the slope), you see that m=1. The y-intercept is at the point (0, 5), so B=5. With the slope-intercept formula, y=Mx+b, you can plug those numbers in to get y=(1)x+5 or y=x+5

Select the three equations that have
Y= 8.1 as the solution.

Y + 2.9 = 11
12 - y = 8.1
2y + 1 = 17.2
9 + 7.2 - y = 8.2
28.4 - y = 20.3

Answers

Answer:y+2.9=11, 2y+1=17.2, 28.4-y=20.3

Step-by-step explanation:

Answer:

Select all of the equations that have y=8.1 as the solution. Mark all that apply.  

y+2.9=11

12-y=8.1

2y+1=17.2

9+7.2-y=8.2

28.4-y=20.3

Step-by-step explanation:

Select all of the equations that have y=8.1 as the solution. Mark all that apply.  

y+2.9=11

12-y=8.1

2y+1=17.2

9+7.2-y=8.2

28.4-y=20.3

which system of equations graphed below has a solution of (2,1)​

Answers

Answer:

Sorry to say this... but neither of them have a solution of (2,1)

Step-by-step explanation:

The top one has a solution of (-2,-1). The one on the bottom has a solution of (-2,1). So... I'm not sure how this can help... but yeah...

two step equations that equal 23, 26, 28, and 29

Answers

Answer:23 - 3 = 20 + 3 = 23

Step-by-step explanation:

$9.27 for 48 oz of taco meat

Answers

Answer:

Need more info to answer your question!

Step-by-step explanation:

Write an equation in point-slope form of the line that passes through the points (2,4) and has the slope of 7

Answers

Answer:

y-4=7(x-2)

Step-by-step explanation:

y-y1=m(x-x1)

y-4=7(x-2)

How many TERMS are there in 8.4n - 3.2p?

Answers

the are two terms in the expression

For each expression, use the Distributive Property to write an equivalent expression.

Answers

Answer:

a) 4(r+2) = (r+2)4

b) (6-8)•r = r•(6-8)

c) 8r+12 = 12+8r

d) 6x-9y = 9y-6x

e) 6x-4y-2z = 2z-4y-6x

Step-by-step explanation:

It's the same equation but its backwards

Hope this helps

On a local sports​ team, 20% of 50 players are​ left-handed. How many​ left-handed players are on the​ team?

Answers

Answer:

11

Step-by-step explanation:

50 x 0.20 = 11

Answer:

10

Step-by-step explanation:

20 / 100 = 0.20 then you mulity 50 and 0.20. 50 * 20 = 10

How would you express the area of the rectangle using the Distributive Property?

Answers

Answer:

C

Step-by-step explanation:

Step 1: Find your legth and width

Length = x + 5

Width = 3

Step 2: Use area formula to find area

l x w = A

(x + 5) x 3 = A

A = 3(x+5)

Step 3: Therefore Statement

Thereforethe answer to the question is C. 3(x+5)

Answer:

C. 3(x + 5)

Step-by-step explanation:

area of rectangle = length * width = width * length

A = area of largest rectangle

a1 = area of left rectangle

a2 = area of right triangle

The largest rectangle is made up of the the two smaller rectangles.

A = a1 + a2

Left rectangle: a1 = WL = 3x

Right rectangle: a2 = WL = 3 * 5

Total area of the two small rectangles:

A = a1 + a2 = 3x + 3 * 5

Apply the distributive property in reverse to 3x + 3 * 5 by factoring out a 3:

A = 3x + 3 * 5 = 3(x + 5)

The area of the largest rectangle is 3(x + 5)

We can also find an expression for the area of the largest rectangle directly by looking at its length and width.

The length of the largest rectangle is x + 5.

The width of the largest rectangle is 3.

A = WL

Substitute 3 for W, the width.

Substitute x + 5 for L, the length.

A = 3(x + 5)

Answer: C. 3(x + 5)

Someone please help and make sure the answer right :)

Answers

Answer:

It's 10

Step-by-step explanation:

It's 10 because 7x is congruent to 70 and 7 times 10 equals 70 :))

Answer:

It's 10

Step-by-step explanation:

It's 10 buddy lol

A man wants to determine the height of a light house. He measured
the angle at A and found that tan A = 3/4. What is the height of the
light house if A is 40 m from the base ?

Answers

Answer:

Step-by-step explanation:

height/A = tanA

height/40 = 3/4

height = 30 meters

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