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emmainna [20.7K]
3 years ago
8

Help me plzzzz, trigonometry!! I'll give brainliest!!!

Mathematics
1 answer:
Naddika [18.5K]3 years ago
4 0

Answer:

Step-by-step explanation:

tan47=x/18

x=18tan47

cosCDB=7/x

cosCDB=7/(18tan47)

CDB=arccos(7/(18tan47))

CDB=68.74

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Help me on this please
m_a_m_a [10]

Answer 1: y = 35x + 50

Answer 2: will

Answer 3: $10

Step-by-step explanation:

Equation: y = 35x + 50

Registration fee is one time, so you just add to it.

You have to pay each time you go to a session, so x will be the amount of sessions, 35 will be the price of each session.

You can plug in the 8 to the equation, then solve for y:

y = 35(8) + 50\\y = 280 + 50\\y = 330

They will be able to pay for it because: 330 < 340

They will have $10 left because:

340 - 330 = 10

340 is how much on the card and 330 is how much the 8 lessons (in total) cost.

7 0
2 years ago
A bookstore has 15 isles each I’ll has 22 shells how many shells are in the bookstore
kvasek [131]
The bookstore has 330 shells
5 0
3 years ago
Read 2 more answers
What is the answer to both of these?
Law Incorporation [45]

Answer:

The answer for 24 is B, so its 7.50

3 0
3 years ago
Determine whether the normal sampling distribution can be used. The claim is p &lt; 0.015 and the sample size is n
Svetradugi [14.3K]

Complete Question

Determine whether the normal sampling distribution can be used. The claim is p < 0.015 and the sample size is n=150

Answer:

Normal sampling distribution can not be used

Step-by-step explanation:

From the question we are told that

    The  null hypothesis is  H_o  :  p =  0.015

     The  alternative hypothesis is    H_a  :  p  <  0.015

     

The  sample size is  n= 150

Generally in order to use  normal sampling distribution  

     The value  np  \ge  5

So  

         np =  0.015 * 150

         np =  2.25

Given that  np < 5   normal sampling distribution  can not be used

8 0
3 years ago
A baseball player on a professional baseball team has 207 hits in 575 at-bats. What
Vika [28.1K]

Answer:

9/25

Step-by-step explanation:

find a number that both the top and bottom are divisible by,

23 is the greatest common division we can make such that the top and bottom remain whole numbers

so,

\frac{207 }{575} ÷23

=(207/23)÷(575/23)

=\frac{9}{25}

4 0
2 years ago
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