2 years ago

Find the average acceleration of a northbound subway train that takes 0.90 seconds to go from 12 m/s to 4.5 m/s.

Mathematics

1 answer:

almond37 [142]2 years ago

8 0

Answer:

a= -8.33

Step-by-step explanation:

it will be deceleration because he was 12 m/s then go to 4.5 m/s

and by applying moving equation

$v_{2}$ = $v_{1}$ +at

we have all but not have a

You might be interested in

Solve 3x+ 4x = 2. (2 points) O 2t10 O-2+2v10 3 O-2±10 3 O -41v10 3

Norma-Jean [14]

3x+4x=2
You add 3x and 4x which gets you 7x

7x=2
You divide both sides of the equation by 7

x=2/7
This will be your result

3 0

2 years ago

Complete the table to show equivalent ratios if mark decided to increase the recipe.

kirza4 [7]

Answer:

What table?

Step-by-step explanation:

I can't help you untill you say the whole problem

5 0

3 years ago

You have just bought a new television and it has an aspect ratio of 16:9. The screen on the television is 65 inches. What is the

sp2606 [1]

Answer:

Step-by-step explanation:

The TV to have a 16:9 ratio and have a diagonal of 65 inches must have a length & width whose squares add to 4,225 (65 squared) and whose ratio length and width simplifies to 16/9.

B is not an option because $16^2+9^2\neq 65^2$ .

C is not an option because $\frac{42.59}{21.22}\neq \frac{16}{9}$ which is 1.777777777778 as a decimal.

D fails for the same reason as C.

Therefore A is the solution because $\frac{56.65}{31.86}=\frac{16}{9}$ and $65.65^2+31.86^2 = 65^2$

4 0

2 years ago

Gwen measured a kitchen and made a scale drawing. The scale she used was 11 inches : 5 feet. If a countertop in the kitchen is 2

aliina [53]

Answer:

11x 5 =55-22=33

Step by step explanation

i think it is useful nark me as branlist

8 0

2 years ago

Peter is reading a 193-page book. He has read three pages more than one fourth of the number of pages he hasnt yet read. How man

Anit [1.1K]

Let n = the number of pages not read
Then the number of pages read = n/4 + 3
Since the total number of pages is 193, we have

n + n/4 + 3 = 193
5n/4 = 190
n = 152
At 8 pages per day it will take 152 pages/ 8 pages/day = 19 days

5 0

2 years ago