Answer:
7
Step-by-step explanation:
We want to find the number 4-digit of positive integers n such that removing the thousands digit divides the number by 9.
__
Let the thousands digit be 'd'. Then we want to find the integer solutions to ...
n -1000d = n/9
n -n/9 = 1000d . . . . . . add 1000d -n/9
8n = 9000d . . . . . . . . multiply by 9
n = 1125d . . . . . . . . . divide by 8
The values of d that will give a suitable 4-digit value of n are 1 through 7.
When d=8, n is 9000. Removing the 9 gives 0, not 1000.
When d=9, n is 10125, not a 4-digit number.
There are 7 4-digit numbers such that removing the thousands digit gives 1/9 of the number.
<em>29 ml</em>
- Step-by-step explanation:
<em>Vcube = 1cm×1cm×1cm = 1 cm³</em>
<em>1 cm³ = 1 ml</em>
<em>If this cube is dropped into a 28ml of water the new reading will be 29 ml.</em>
Answer:
2 2/5 or 12/5
Step-by-step explanation:
Hope this helps :)
Answer:
72m2
Step-by-step explanation:
first you find out what 6*6*4=144+8*6*6=288-144=144/2=72m^2
Answer:
Step-by-step explanation:
2/c
3/both magnitude and direction are needed to define it.
4/Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Put another way, speed is a scalar value, while velocity is a vector.
5/There are three ways an object can accelerate: a change in velocity, a change in direction, or a change in both velocity and direction.
6/The rate at which velocity changes with time is called Acceleration is a measure of how quickly the velocity is changing.
7/The instantaneous speed of an object is then the magnitude of its instantaneous velocity. Speed tells you how fast. Velocity tells you how fast and in what direction.
