Answer:
B.x= -4 and E. x= 10 are the answers
Answer:
15/8
Step-by-step explanation:
tan 2θ = 2 tan θ / (1 − tan² θ)
tan 2θ = 2 (3/5) / (1 − (3/5)²)
tan 2θ = (6/5) / (1 − 9/25)
tan 2θ = (6/5) / (16/25)
tan 2θ = (6/5) × (25/16)
tan 2θ = 15/8
Answer:
In this case, you can use the concept of cosine to calculate y, and things are even easier when you have one of the special angles which is a 45° angle.
So we know that: cos45° = √2/2
This fact will always be true. In our case, we have:
cos45° = 7/y
Therefore, we have the equation:
7/y = √2/2
⇔ 14 = y√2
⇔ y = 14/√2
⇔ y = √196/√2 = √(196/2) = √98 = 7√2
So y is equal to 7√2
First, convert all fractions to the lowest common denominator: 20
It takes 5/20 of an hour to string bracelets and 2/20 of an hour to string them. Thus, it takes 7/20 of an hour to make one bracelet.
Megan has 5 and 4/20 hours, or 104/20 hours, to make bracelets. Here, we must divide 104/20 hours by 7/20 hours.
Really, it is dividing 104 by 7 since they have the same denominator. 104/7 is 14.86, so she can make 14 whole bracelets in 5 and 1/4 hours.
This question is based on greatest common multiple.
Answer:
Cynthia is right that Andy made an error.
Step-by-step explanation:
As per Andy, action dvds are = 
And comedy dvd's are = 
So, in total these become = 
= 
= 
This is not 4/9 as per Andy.
