Answer:
C - 3 Books.
Step-by-step explanation:
The student borrowed 2 books on Monday, and another 4 books on Tuesday, so 2 + 4 = 6. Since the student later returned 3 of said books, we can do 6 - 3 = 3. The student ends up with 3 books in total.
I believe the answer is C. natural numbers are positive while numbers
Answer:
m= -10.5
Step-by-step explanation:
4m-6(2m-3)=90
distribute 6
4m-12m+6=90
combine like terms
-8m+6=90
subtract 6
-8m=84
divide both sides by -8
answer
m= -10.5
Answer:
∡BCE = 60
Step-by-step explanation:
Here, we want to find the angle marked BCE
From our diagram, the angle marked BCE is y
Looking at triangle BCE, we have the right angle, an angle measure of 30 and the angle marked y which we say is BCE
mathematically, the sum of all these will give 180 as the sum f the interior angles of a triangle is 180
Thus, we have that;
y + 30 + 90 = 180
y = 180-120
y = 60
Let's say the length of the rectangle is y. Then, we can write an equation for the perimeter of a small rectangle.
(x + y) * 2 = 21
Which can be rewritten as x + y = 10.5
Then, we go around the large rectangle and use x and y to write an expression. Starting with the top left length:
y + x + y + x + y + x + x
4x + 3y
We know that x + y = 10.5, meaning if we multiply, we get 3x + 3y = 31.5
Rewrite 4x + 3y as
3x + 3y + x
Substitute
31.5 + x
That means the perimeter of the large rectangle is 31.5 + x cm.