Step 1: Isolate the absolute value
Step 2: Is the number on the other side of the equation negative?
Step 3: Write two equations without absolute value bars
Step 4: Solve both equations
Currently 100 students can eat for 20 days, so we need to find the number of days 125 students can eat.
Originally:
100 students eat for 20 days
New:
125 students eat for x days. Multiply original number of students by original number of days which will give the total amount of students per day. Then divide the total amount of students per day by the new number of students to find the new number of days.
x= (100 students * 20 days)/ (100+25)
x= (100 * 20)/ 125
x= 2000/125
x= 16 days
ANSWER: 125 students can eat for 16 days.
Hope this helps! :)
Answer:
9(5x - 3) option (c)
Step-by-step explanation:
The question isn't clear as well as incomplete without the options. Since there are no options let's determine the answer of the following mathematical expression:
45x - 27
a) 9(3x - 5)
b) 3(12x + 7)
c) 9(5x - 3)
d) 5(7x + 30)
To determine which option is equivalent to 45x - 27, we would check each option by expanding the bracket. Apply BODMAS (stands for Bracket, Of, Division, Multiplication, Addition and Subtraction) after the expansion. That is multiply before you add or subtract.
a) 9(3x - 5) = 9×3x - 5×9
= 27x - 45
b) 3(12x + 7) = 3×12x + 3×7
= 36x + 21
c) 9(5x - 3) = 9×5x - 9×3
= 45x - 27
d) 5(7x + 30) = 5×7x + 30×5
= 35x + 150
From the expansion, only option C is equal to the given expression: 45x - 27
<span>r = 3 × v + 13
</span><span>r = 3 × 9 + 13
</span><span>r = 27 + 13
v = 40</span>