Answer:
<h2>30</h2>
Step-by-step explanation:
<h3>to understand the steps</h3><h3>you need to know about:</h3>
- system of linear equation
- word problems
- PEMDAS
first step
let's create the equation word problem
<h3>my mother's current age is four times the sum of the ages of my two sisters. After 5 years, my mother's age will be double the sum of the ages of my two sisters. What is the current age of my mother? (imaginary problem)</h3>
let's solve
let my mother's and sister's age be x and y respectively
according to the first condition,x=4y....(I)
according to the 2nd condition,x+5=2(y+5×2).....(ii)
so the system of linear equations is
x=4y
x+5=2(y+5×2)
gets from the second equation
x+5=2(y+10)
x+5=2y+20
4y+5=2y+20 (as x=4y)
2y=15
y=7.5
so the age of mother is
x=4.(7.5)
x=30
Answer:
The distance between the two cities on the map is 16 inches.
Step-by-step explanation:
368/23 = 16
Answer:
I'll sub ig.
I have to write 20 letters to submit so just ignore this part :)
Answer:
11.5 cm^3
Step-by-step explanation:
The volume of a sphere is (4/3)(pi)(r^3). To find the radius, divide the diameter of 2.8 to get 1.4. Then plug it in to get 11.49. 11.49 rounded to the nearest tenth is 11.5 cm^3.
Answer:
Your answer would be the 60th
Step-by-step explanation:
This is your solution due to the fact that when you find the multiples of 12 and 30 you will realize that that's the first number they meet at, let me show you.
Multiples of 12 - 12, 24, 36, 48, 60
Multiples of 30 - 30, 60, 90, 120, 150
So The Least Common Denominator is 60!
Thus that is how I know that the 60th customer at the movie theater would get both items for free.
Hope This Helped!
