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earnstyle [38]
2 years ago
15

Pleaseee help me this is my last question

Mathematics
2 answers:
brilliants [131]2 years ago
8 0

Answer:

x = 4.1 cm

Step-by-step explanation:

cause big maths

vlabodo [156]2 years ago
6 0

Answer:

x = 4.1 cm

Step-by-step explanation:

15.6 / 2 = 7.8

x^2 = 8.8^2 - 7.8^2

x^2 = 77.44 - 60.84

x^2 = 16.6

x = 4.1

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Given that <br> y<br> = 8 cm and <br> θ<br> = 34°, work out <br> x<br> rounded to 1 DP.
morpeh [17]

Answer:

Step-by-step explanation:

if y is hypotonuse and x is opposite side:

sin 34=x/8

8*sin 34=x

x=4.47 (3 sf)

tell me in comment if i interpreted question wrong ._.

6 0
3 years ago
Alexa had a negative balance in her checking account before depositing a $47.00 check what is the new balance of Alexis checking
FromTheMoon [43]
Her new balance is 0 trust me i did this wuestion before. Lets say she had a negative balance of 47, she puts 47 and thats what she owes so -47- (-47)=0☺️
3 0
3 years ago
Help?! Please! Thank you!!!!!!!
rjkz [21]
I think this is right. Hope it helps

3 0
2 years ago
Find a recursive formula for the sequence:<br><br> 1, -1, -7, -25
Mumz [18]
<h3>Answer:</h3>

a_n=3a_{n-1}-4

<h3>Step-by-step explanation:</h3>

<em>Try the answers</em>

You can try the answers to see what works. You can expect all of the choices to match the first two terms, so try some farther down. Let's see if we can get -25 from -7.

a) 3*(-7) -4 = -21 -4 = -25 . . . . this one works

b) -7 -2 = -9 . . . . ≠ -25

c) -3(-7) +2 = 21 +2 = 23 . . . . ≠ -25

d) -2(-7) +1 = 14 +1 = 15 . . . . ≠ -25

The formula that works is the first one.

_____

<em>Derive it</em>

All these formulas depend on the previous term only, so we can write equations that show the required relationships. Let the unknown coefficients in our recursion formula be p and q, as in ...

a_n=p\cdot a_{n-1}+q

Then, to get the second term from the first, we have

... 1·p +q = -1

And to get the third term from the second, we have

... -1·p +q = -7

Subtracting the second equation from the first gives ...

... 2p = 6

... p = 3 . . . . . . . this is sufficient to identify the first answer as correct

We can find q from the first equation.

... q = -1 -p = -1 -3 = -4

So, our recursion relation is ...

a_n=3a_{n-1}-4

6 0
3 years ago
Hello please help i’ll give brainliest
Anni [7]

Answer:

-25 ,B

Step-by-step explanation:

8 0
3 years ago
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