<span># of books = 4 ; original cost = 4*9=36; savings = 0.10*36= 3.60
</span>
<span># of books = 2 ;original cost = 2*20=40; savings = 0.20*40= 8.00
</span>
<span>Percent savings:
original total cost=$76
Total savings = $11.60
Percent savings: 11.60/76 = 0.1526..= 15.26%</span>
Answer:
The Multiplication equation to find the number of hours taken to travel the distance is
.
It will taken <u>15 hours</u> by Russian ice breaker to travel a distance of 82.5 km through the ice.
Step-by-step explanation:
Given:
Thickness of the ice = 2.3 m
Speed while moving forward = 5.5 km/h
Distance to travel through the ice = 82.5 km
We need to write and solve the multiplication equation to find the number of hours taken to travel the distance.
Solution:
Let the number of hours taken to travel the distance be 'x'.
Now We know that;
By Distance formula;
Distance traveled is equal to Speed while moving forward multiplied by the number of hours taken to travel the distance.
framing in equation form we get;

Hence The Multiplication equation to find the number of hours taken to travel the distance is 
On Solving above equation we get;
Dividing both side by 5.5 we get;

Hence It will taken <u>15 hours</u> by Russian ice breaker to travel a distance of 82.5 km through the ice.
The meaning of vertical angles are two congruent angles formed by the intersection of two straight lines.
On this question is given that angles one and two are vertical, and the measure of one of them or angle two is 31 degrees.
As said before vertical angles are congruent, or have the same measurement.
Meaning that angle one is equal to 31 degrees.
Answer: it would be B or C
Step-by-step explanation: Hope this helps :)
Answer:
Length of the room is 180 ft
Step-by-step explanation:
We have a rectangular room with dimensions:
width = 70 ft and length "x" (unknown)
Perimeter of a rectangle is 2*w + 2*x and according to problem statement 500 ft of lights will fit exactly in room perimeter then:
2*70 + 2*x = 500
140 + 2*x = 500
2*x = 500 - 140
2*x = 360
x = 360/2
x = 180 ft