about $4
multiply the bill by 15% to calculate tip
tip = $26.51 × 
= 3.9765 ≈ $4
It is now possible to find the margin of error, the reason being that the confidence level is not given. However the 'standard error' of the sample mean can be found as follows:
Converted to a percentage, we get 1.11% which is the third choice of answer.
Answer:
A = 110.25
Step-by-step explanation:
add all the equations and equal it to 180 because all triangle angles add to 180:
4x+1 + 3x + 3x-1 = 180
10x =70
/10 /10
x = 7
Insert x into each equation and solve:
3(7)-1 = 20
4(7)-1 = 27
3(7) = 21
and then use A = 1/2 base*height formula:
A= 1/2 21* 20
A= 210
Answer:
GCF: 2r
Step-by-step explanation:
The Greatest Common Factor(GCF) is the biggest factor you can divide both numbers by. For these numbers we cannot divide by a bigger number than 2r, and that happens to be the greatest common factor because 4r can be divided by 2r.
Hopes this helps!
Answer:
5 10 15 20
4 8 12 16
Step-by-step explanation:
