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HACTEHA [7]
3 years ago
10

Neeeeeed help not sure please help asap

Mathematics
1 answer:
lyudmila [28]3 years ago
3 0
The correct answer is c

(it is 3 times the sum of 6 + 5 not 3 times 6 like a is suggesting)
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X + 7у = 23 3х + 14у = 48​
Lelechka [254]

Answer:

x + 7у = 23 3х + 14у = 48​

Step-by-step explanation:

x + 7у = 23 3х + 14у = 48​

8 0
2 years ago
There are 12 boys and 16 girls in Marco's class (including Marco). What is the probability that a student chosen at random from
qaws [65]

Answer: 3/7

Step-by-step explanation:

There's 28 student total.

12/28 simplify to 3/7

3 0
2 years ago
Find a power series representation of e^x sin(x)
liberstina [14]
The Taylor series is defined by:
f(x) = \sum \frac{f^n (a)}{n!} (x-a)^n

Let a = 0.
Then its just a matter of finding derivatives and determining how many terms is needed for the series.

Derivatives can be found using product rule:
f^n (x) = e^x g^{n-1} (x) + e^x g^n (x)  \\ g^0 (x) = sin x

Do this successively to n = 6.
f^1 (x) = e^x (sinx +cos x) \\ f^2 (x) = e^x (2cos x)  \\ f^3 (x) = e^x(2cos x - 2sin x)  \\ f^4 (x) = e^x (-4 sin x)  \\ f^5 (x) = e^x(-4sinx -4cos x) \\ f^6(x) = e^x(-8cos x)

Plug in x=0 and sub into taylor series:
e^x  sin x = x+x^2 +\frac{x^3}{3} -\frac{x^5}{30}-\frac{x^6}{90}...

If more terms are needed simply continue the recursive derivative formula and add to taylor series.
6 0
3 years ago
I need to know x please help!!! I’m failing geometry
Rufina [12.5K]

Answer:

x=58

Step-by-step explanation: Since there is a right angle, you add 22 and 10 and get 32. then you subtract from 90, because 90 degrees is what a right angle measures so you should get 58

3 0
2 years ago
Which shows the numbers $5.25, $0.69, $123.46 rounded to the nearest dollar?
Mashutka [201]
The answer is going to be 5.00,  1.00,  123.40. hope that helped
4 0
3 years ago
Read 2 more answers
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