X=22.5
I got that by writing the fraction 12/15 is equal to 18/x. To get 12 to 18 u have to multiply 12 by 1.5, so I do the same to 15 to find what x would be
Answer:
$13.97 was the price of the dinner b4 tax and tip
Step-by-step explanation:
18.60 - 11% (1.84) = 16.76
16.76 - 20%(2.79) = 13.97
Answer: ![C=270x+2200](https://tex.z-dn.net/?f=C%3D270x%2B2200)
Step-by-step explanation:
Given
Cost per student in the year 1978 is $2200
The cost increases to $10,300 in 2008
Suppose
is the linear equation defining the cost per student after x years
Substitute the value for 1978
![\Rightarrow 2200=m(0)+c\\\Rightarrow c=2200](https://tex.z-dn.net/?f=%5CRightarrow%202200%3Dm%280%29%2Bc%5C%5C%5CRightarrow%20c%3D2200)
After 30 years it becomes
![\Rightarrow 10,300=m(30)+2200\\\Rightarrow 30m=8100\\\Rightarrow m=270](https://tex.z-dn.net/?f=%5CRightarrow%2010%2C300%3Dm%2830%29%2B2200%5C%5C%5CRightarrow%2030m%3D8100%5C%5C%5CRightarrow%20m%3D270)
Thus, the linear equation becomes
![\Rightarrow C=270x+2200](https://tex.z-dn.net/?f=%5CRightarrow%20C%3D270x%2B2200)
Answer:
4
__
13
Step-by-step explanation:
look up top for explanation
Answer:
It can be concluded that the intersection of a chord and the radius that bisects it is at right angle. The two are perpendicular.
Step-by-step explanation:
i. Construct the required circle of any radius as given in the question, then locate the chord. A chord joins two points on the circumference of a circle, but not passing through its center.
ii. Construct the radius to bisect the chord, dividing it into two equal parts.
Then it would be observed that the intersection of a chord and the radius that bisects it is at right angle. Thus, the chord and radius are are perpendicular to each other.
The construction to the question is herewith attached to this answer for more clarifications.