Answer:
question 4 is x=6 so i believe it is true and
question 5 is false
Step-by-step explanation:
Answer:
$20.83
Step-by-step explanation:
cost of fuel purchased =$79.17
amount given to the clerk= $100
amount of change she should receive= 100-79.17
= $20.83
<h2>
x = 9</h2><h3 />
<u>We know:</u>
- we can add/subtract the same expression to both sides of the equation to get an equivalent equation;
- we can multiply/divide both sides of the equation by the same non-zero number to get the equivalent equation.
<u>Equivalent equations</u> are algebraic equations that have identical solutions.
We have the equation:
<h3>SOLUTION:</h3>
<em>multiply bot sides by 3</em>
<em />
<em>divide both sides by 7</em>
<em />
She started with 60 pennies
<h3>Ratios and propotions</h3>
Let the number of a bunch of pennies she has to be "x"
If she gives 1/3 of her pennies to her older brother, she will have 2/3 x remaining
If she gives 2/5 of her remaining pennies to her younger sister, she will have 2/3x- (2/5 of 2/3x) = x remainijg
If Sally has 24 pennies remaining, then;
2/3x - 4/15x = 24
10x-4x/15 = 24
6x/15 = 24
6x = 15 * 24
x = 60
This means that she started with 60 pennies
Learn more on ratios here:
brainly.com/question/2914376
Answer:
8
Step-by-step explanation:
21x+12=180
21x= 168
x=8