x-y=21 ⇒ x=y+21
x+13=2y
Substitute y+21 for x into the equation x+13=2y
So y+21+13=2y
Simplify 34=y
So Danielle is 34 years old. Plug y back in to the original equation
x-34=21
x=55
Tony is 55 years old
The correct option is: 53.9°
<em><u>Explanation</u></em>
According to the below diagram, 
is acute triangle, in which 
and 
If we <u>apply cosine rule</u> here, then we will get.....
Now, plugging the given values, we will get....
So, the measure of 
is 53.9°
Answer:
C.
Step-by-step explanation:
When a data is continuous, the values it can take are the real numbers, this means it can take any value in an interval.
When a data is discrete, the values can take only certain values in an interval, this data usually refers to natural numbers.
In the case of the maximum capacities of various stadiums it is clear that their capacities can only be found in the natural numbers (a stadium cannot have a capacity of 4647576.56 people or any number with a decimal). Therefore, the data are discrete because it can take only some specific values.
Thus, the correct answer is C.
Answer=18 pages
Steven read 9 pages on Monday. If he needs to read DOUBLE that amount on Tuesday, then we need to take the number of pages he read on Monday and times it by 2.
9*2=18pages
Steven needs to read 18 pages on Tuesday.
**Remember that Double is the same as 'two times more', or 2x more...
Answer:
m = 3
Step-by-step explanation:
<u>Assuming these shapes are similar, you can set up a proportion:</u>
<u />
<u>→Cross multiply:</u>
<u />
<u>→Divide 24 by 8:</u>
m = 3
