Answer:
1 tablespoon is equivalent to 3 teaspoons.
Step-by-step explanation:
Answer:
The perimeter of semi-circle is 3π cm.
Step-by-step explanation:
It is given that the perimeter of circle is, P = 2×π×r. The diagram in this question is semi-circle which is half of circle so you have to divide the 2 to the formula :
Circle,
P = 2×π×r
Semi-circle,
P = (2×π×r)÷2
= π×r
Next, you have to substitute r value into the formula :
r = 3 cm
P = π×3
= 3π cm
There are many answers. I’ll give you three examples...
4/10
6/15
8/20
There is a pattern too, just a trick!
Question 1:
Substitution.
x+y=2
y=-x+2
2x+(-x+2)=4
x=2
(2)+y=2
y=0
Solution: (2,0)
There is one solution
Question 7 is too confusing, just find where the points intersect at (-5,2).
Question 9:
Elimination.
(-1)y=2x+6
y=2x+2
New: -y=-2x-6
0=-4
No Solution
Question 11:
Just look at explanations.
It's (5,17) both lines etc..
Answer:
$55
Step-by-step explanation:
Let b represent the original bill. The problem statement tells us ...
20% × (b -6) = 9.80
Dividing by 20% gives ...
b -6 = 49.00
b = 55.00 . . . . . . . add 6
Their bill before the discount was $55.00.
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<em>Comment on the tip</em>
It is generally considered better form to tip on the basis of the original bill before coupons and discounts.
