First, you need to write to expressions to model each situation:
Plan A: 10+0.15x
Plan B: 30+0.1x
Next, set the expressions equal to each other and solve for x:
10+0.15x=30+0.1x
<em>*Subtract 0.1x from both sides to isolate the variable*</em>
10+0.05x=30
<em>*Subtract 10 from both sides*</em>
0.05x=20
<em>*Divide both sides by 0.05*</em>
x=400
The plans would have the same cost after 400 minutes of calls.
To find how much money the plans cost at 400 minutes, plug 400 into either expression. We'll use Plan A:
10+0.15(400)
10+60
70
The plans will cost $70.
Hope this helps!
It doesn't matter how may guests you have. As long as cake price is lower, that is the cheapest to buy.
Therefore the cake cost for 13.50 is the cheapest one.
The volume of the complex figure shown in the diagram is 56 m³.
<h3>
Volume</h3>
Volume is the amount of space occupied by a three dimensional object.
Volume = length * breadth * width
The volume of the big cube = length * breadth * width = 7 * 3 * 4 = 84 m³
The volume of the small cube cut out = length * breadth * width = 4 * 7 * (4 - 3) = 28 m³
Volume of the complex figure = 84 m³ - 28 m³ = 56 m³
The volume of the complex figure shown in the diagram is 56 m³.
Find out more on Volume at: brainly.com/question/1972490
Answer:
5x+6 =-4
x = -2
Step-by-step explanation:
product of 5 and a number x
5x
six more than
5x+6
is means equal
5x+6 =-4
Subtract 6 from each side
5x+6-6 = -4-6
5x= -10
Divide by 5
5x/5 = -10/5
x= -2
Answer: 15 feet
Step-by-step explanation:
From the question, we are informed that a diving board is 10 feet above a pool. Since the ladder is 5 feet away from the base of the diving board, to calculate how tall is the ladder is, we subtract -5 from 10. This will be:
= 10 - (-5)
= 10 + 5
= 15 feet
The answer is option C.