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alexandr1967 [171]
3 years ago
15

You are given the initial velocity of an object at time t = 0, the velocity of the object at a later time , and the time interva

l t in which this change in velocity occurs. Assuming constant acceleration, which equation can be used to find the total displacement of the object from time t = 0 to time

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
6 0

You have to be very careful how you interpret this question -- more specifically what you do about the acceleration. It's constant. That makes a usable even though the acceleration is not part of the equation.

You can't use b because it requires that you know the acceleration or distance to find the other. So don't choose b.

Again you need a value for the acceleration to find d. You have 2 unknowns and 1 equation. so C is out.

Same with D

A is your answer.

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Select the best answer for the question
Usimov [2.4K]

Answer:

its 72%

Step-by-step explanation:

7 0
3 years ago
The following system has a solution: x=10, y=-3, z=14
wolverine [178]
<h2>Answer:</h2><h3>False</h3>

<h2>Step-by-step explanation:</h2>

In this problem, we have the following System of Three Equations in Three Variables, so our goal is to determine whether x=10, \ y=-3, \ z=14 is the solution to this system, that is, the ordered triple P(x,y,z) where three planes intersect.

The easier way to find the answer is to plug in the x, y and z values in the equations and figure out whether the equations satisfy the solutions. Then:

First \ Equation: \\ \\ 3(10)+7(-3)-14=-5 \\ \\ It \ satisfies \ the \ first \ equation \\ \\ \\ Second \ Equation: \\ \\ 9(10)-(-3)-4(14)=37 \neq 17 \\ \\ It \ doesn't \ satisfy \ the \ second \ equation

STOP HERE! Since the x, y an z values doesn't satisfy the second equation, the x=10, \ y=-3, \ z=14 is not the solution to the system of equations.

5 0
3 years ago
A car travels 312 miles in the same time that a motorcycle traveled 272. If the cars speed is 10mph more than the motorcycles, f
dimaraw [331]

Answer: speed of the car is 88 miles per hour

the speed of the motorcycle is 78 miles per hour

Step-by-step explanation:

Number of miles travelled by car = 312

Number of miles travelled by motorcycle = 272

Let x = speed of the car

Let y = speed of the motorcycle

If the car's speed is 10mph more than the motorcycle's, it means

x = y + 10 - - -- - - 1

Time taken for car to travel 312 miles is distance /speed = 312/x

Time taken for motorcycle to travel 272 miles is distance /speed = 272/y

The car travels 312 miles in the same time that a motorcycle traveled 272.

This means

312/x = 272/y

312y = 272x

y = 272x/312

Substituting y = 272x/312 into equation 1, it becomes

x = 272x/312 + 10

312x = 272x + 3120

312x-272x = 3120

40x = 3120

x = 3120/40 = 78 miles per hour

x = y + 10 = y + 78

x = 88 miles per hour

3 0
3 years ago
Solve the equation. 7+6=-3y+26<br> A. y= -8<br> B. y= -5<br> C. y= 5<br> D. y= 8
Umnica [9.8K]
The correct answer is c y=5
7 0
3 years ago
3. Francis has an unpaid balance of $480 on his credit card.
GarryVolchara [31]

Answer:

4 dollars 80 cents

Step-by-step explanation:

if annual is 12%, find monthly, 12/12=1

monthly rate is 1%

convert to decimal

0.01

480*0.01

4.8

6 0
3 years ago
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