Answer:
<h2>Question 13 : x = 62°</h2>
<h2>Question 14 : x = 2</h2>
Step-by-step explanation:
Question 13
The diagram in question 13 is a triangle.
The sum of interior angles of a triangle is equal to 180°
To solve for x ;
Question 14
(: represents ratio or /)
x/9 = 18/81
Cross Multiply
81x = 18×9
81x = 162
Divide both sides of the equation by 81
81x/81 = 162/81
x = 2
Answer:
Step-by-step explanation:
x° + y° = 180°
2y° - 0.5x° = 180°
y° = 108°
x° = 72°
Answer:
X^2 +Y^2 - 2X-4Y= 0
Step-by-step explanation:
From the circle eqn.
(x-a) ^2 +(y-b) ^2 =r^2
a=1, b= 2. r= 3
(x-1)^2 +(y-2)^2 =3^2
(x-1)(x-1)+(y-2)(y-2)=3^2
X^2 - 2x+1+y^2 -4y+4=9
X^2 +Y^2 - 2x-4y+5=9
X^2 +Y^2 - 2x-4y-4=0
It asks to "Find the unit price in dollars per padlock"
The phrasing "dollars per padlock" is the same as "dollars per 1 padlock"
In other words, the teacher wants to know how much 1 padlock costs.
7 padlocks : $23.80
7/7 padlocks : $23.80/7 .... divide both parts by 7
1 padlock : $3.40
We see that 1 padlock costs $3.40, so the unit cost is $3.40 per padlock
