Answer:
x= 4/7
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.

often denotes an angle, where

is conventionally used.
Adding

, where

is any integer, is the same as saying that

is equivalent to

etc.
This is the case because a complete revolution has an angle measure of

, which means that adding any multiple of

to a given angle results in the same angle.
Example:
If

, then

. This is also true if

, which gives

.
Answer:
x = 40
Step-by-step explanation:
Given 2 secants to a circle from an external point, then
The product of the external part and the whole of one secant is equal to the product of the external part and the whole of the other secant, that is
8(8 + x) = 12(12 + 20) ← distribute parenthesis on both sides
64 + 8x = 12 × 32 = 384 ( subtract 64 from both sides )
8x = 320 ( divide both sides by 8 )
x = 40
Please see the attachments for the complete solution.
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark">
rtf
</span>
H=Hours he an skate; T=total cost
T=$7.00+($1.50/hr)H
T-$7.00=($1.50/hr)H
(T-$7.00)/($1.50/hr)=H
For T=$19:
($19.00-$7.00)/($1.50/hr)=H
$12.00/($1.50/hr)=H
8hrs=H
ANSWER: Jon can skate 8 hours for $19.00.
Hope this helps!