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inna [77]
3 years ago
10

Someone please help me!!!!11

Mathematics
1 answer:
serious [3.7K]3 years ago
4 0
The U stands for union. Combine A and B


Hope that helps!!
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Can someone show me how to factor this please?
Alex_Xolod [135]

Answer:

\displaystyle \theta = \left\{\frac{7\pi}{6}, \, \frac{3\pi}{2}, \frac{11\pi}{6}\right\}

Step-by-step explanation:

We want to solve the equation:

2\sin ^2 \theta + 3\sin \theta + 1 = 0

In the interval [0, 2π).

Notice that this is in quadratic form. Namely, by letting u = sin(θ), we acquire:

\displaystyle 2u^2 + 3u + 1 = 0

Factor:

\displaystyle (2u+1)(u+1) = 0

By the Zero Product Property:

\displaystyle 2u + 1 = 0\text{ or } u + 1 = 0

Solve for each case:

\displaystyle u = -\frac{1}{2} \text{ or } u = -1

Back-substitute:

\displaystyle \sin \theta = -\frac{1}{2} \text{ or } \sin \theta =-1

Use the Unit Circle. Hence, our three solutions in the interval [0, 2π) are:

\displaystyle \theta = \left\{\frac{7\pi}{6}, \, \frac{3\pi}{2}, \frac{11\pi}{6}\right\}

8 0
3 years ago
Bridget buys a softball bat during the sale. If the original price was $20, how much does Bridget pay?
rodikova [14]

Answer:

20$ - the sale price

Step-by-step explanation:

take the 20$ the bat originally was and the minus it by the the sales price to get your answer. BUT YOU HAVE 2 HAVE THE SALES PRICE!!!!

5 0
3 years ago
What is cos q if sec q = 2? I need help please please
nirvana33 [79]
I hope this helps you


sec Q=1/cos Q


2=1/cos Q


cos Q= 1/2


Q=30+2.pi.n


Q=330+2.pi.n


n€Z


6 0
3 years ago
Whats the unit rate for 49 points in 28 minutes?
expeople1 [14]

Answer:

1.75 points per minute

7 0
3 years ago
Read 2 more answers
The mean number of books read
taurus [48]

Answer:

I thing Kaleigh read 1.5 more than Austin

Step-by-step explanation:

4 0
3 years ago
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