Step-by-step explanation:
first and foremost start off with a proper FBD (I drew in the forces and acceleration just to refer back to it quicker, assume right and up are positive)
a) F net = Forces aiding the movement - forces opposing
if the box is sliding to the right then we've got
Fnet = 26 + (-3)
[notice how I wrote that they're both being added because they're vector forces]
Fnet = 23 N
b) using Newton's second law of motion, F = ma, we can find the mass
Fnet = ma
rearrange for mass
M = Fnet/a
M = 23 N / 2.0 ms^-2
M = 11.5 Kg
Since the equation is a true one, then it is an identity.
<h3>How to illustrate the information?</h3>
It should be noted that the information given is represented as 9(a−4)+3(2a+5)=7(3a−4)−6a+7.
After using the distributive law, the value that will be gotten will be:
15a - 21 = 15a - 21.
Therefore since the equation is a true one, then it is an identity.
Learn more about equations on:
brainly.com/question/2972832
#SPJ1
The answer is: 9 blouses.
The explanation is shown below:
1. The remainder is:
2. She used of the remainder to buy 2 pair of pants:
3. Then, she used of the money to buy 2 pairs of pants. For each one she used:
÷= of the money for a pair of pants.
4. A pair of pants costs 3 times as much as a blouse, therefore you can write the following expression:
Where is the cost of 1 blouse
5. Solve for :
for each blouse
6. If she used of the money for 1 blouse, you have the following amount of blouses bought with of the money:
Where is the total number of blouses.
Answer:
27
Step-by-step explanation:
mark me brainliest