Answer:
Using mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be?
c.$12.30
Step-by-step explanation:
10% is $8.179, then 5% is a half of this sum, i.e. $8.179:2=$4.0895
3. 15%=10%+5% and in $ it is $8.179+$4.0895=$12.2685 that is nearly $12.30.
30 8
+------------------------------------------------------------+-------------------+
I I I
2 I 2 * 30 I 2 * 8 I
I I I
+------------------------------------------------------------+-------------------+
The entire large rectangle above is 38 units long and 2 units wide.
Its area is length times width, so the area is 2 * 38.
38 is also the same as 30 + 8, so the area can also be written as 2(30 + 8).
The left rectangle is 30 units long and 2 units wide. Its area is 2 * 30.
The right rectangle is 2 units long and 8 units wide. Its area is 2 * 8.
If you add the areas of the small rectangles, you get
2 * 30 + 2 * 8
If you add the two small areas, you get the area of the laerge rectangle, so
2(30 + 8) = 2 * 30 + 2 * 8
which is an example of the distributive property.
Answer:
Distance is 10
Step-by-step explanation:
distance between y1=2x-3 and y2= 2x+7
y2 - y1 = (2x +7) - (2x - 3) = 10
Answer:
17 to 15
Step-by-step explanation:
17 crayons to 15 rulers
Other possible answers:
17/15
17:15
Hope this helps you!
Conner's work is correct. To combine and make it simple, you Multiply:
(3^5+9)+(6^8+10) which will equal 3^14 6^18.
But Jane's work, instead of adding, Jane multiplies. So, Conner is correct.
Hope that helped!
