X=number of books that cost 0.60
y=number of books that cost 0.75
x+y=16
0.6x+0.75y=10.95
solve
multiply second equation by 10 for nicity
6x+7.5y=109.5
multiply first equesiotn by -6 and add to second
-6x-6y=-96
<u>6x+7.5y=109.5 +</u>
0x+1.5y=13.5
1.5y=13.5
divide both sides by 1.5
y=9
sub back
x+y=16
x+9=16
minus 6
x=7
seven 0.60 books and nine 0.75 books
Answer:
It will take the penguin 26.95 sec to walk 45 feet.
Step-by-step explanation:
Step-by-step explanation: Given. Distance = d = 10 feet. Time = t = 6 sec. First of all we have to calculate speed . Let s be the speed, then. Now, How far does the penguin walk in 45 seconds? Here we know the speed and the time . So, s=1.67 ft per sec. t = 45 sec
The correct match are as follows:
<span>1. Plane.
</span>B) a flat surface that extends infinitely and has no depth; it has length and width
<span>2. Perpendicular Lines.
</span><span>D) two lines that intersect at 90˚ angles.
</span><span>
3. Parallel Lines.
</span><span>A) two lines that lie within the same plane and never intersect.
</span><span>
4. Circle.
</span><span>C) a set of all points in a plane that are a given distance from a point.
</span><span>
5. Angle
</span><span>E) a figure consisting of two rays with a common endpoint.</span>
Step-by-step explanation:
We have 3(x + 3) = 10 + 2(x - y).
=> 3x + 9 = 10 + 2x - y
=> x = 1 - y
=> y = 1 - x.
(Rewritting it as a mathematical statement is the 1st line)
Answer/Step-by-step explanation:
The length of the boxes and whiskers of a box plot tells us more about the spread the data being represented is and as well as the shape of the spread.
Invariably, if the length of the left box and left whiskers is of the same length as the right box and right whiskers, this implies that the distribution of the data point is close to being symmetric, or approximately symmetrical.
