Answer:
6 weeks
Step-by-step explanation:
Sierra: 40 + (55x)
40 + (55 * 6) = 370
Zayn: 250 + (20x)
250 + (20 * 6) = 370
Answer:
x = 1
Step-by-step explanation:
When there is a "-" (minus) sign in front of parenthesis, we distribute the sign inside. Let's do this with "-(x+1)". So we will have:

Now, we follow rules of algebra. We take variables to one side and numbers to another side (remember to change signs with changing sides). Shown below:

Now, we add like terms in left side. Such as:
ax + bx = (a+b)x
Thus, we have:

Now, we add right side and divide and get a value for x:

The value of x is 1
Answer:
c 128.92
Step-by-step explanation:
79.95 +19.99 +19.99=119.93
119.93+7.5%=128.92
Answer:
2 : 3
because 12 : 18 can be simplified to 6 : 9, simplified even more can be 2 : 3
Answer:
50
Step-by-step explanation:
Let x represent the number of people that attended the movie.
And y the number of adults that attended the movie
Given;
Percent of adults that attended the movie = 40%
Number of adults that attended the movie y = 20
So,
40% of those that attended the movie area adults.
y = 40% of x
y = 40/100 × x
y = 0.4x
(Ratio of y to x is 4:10 or 0.4)
Making x the subject of formula;
x = y/0.4
Substituting the value of y given;
x = 20/0.4
x = 50
Therefore, 50 people attended the movie.