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3 years ago

Help plz i need help help help plz

Mathematics

2 answers:

viktelen [127]3 years ago

8 0

Answer:

Step-by-step explanation:

I hope this helps

Brut [27]3 years ago

5 0

Answer:

The answer is 3x3x3x3

Step-by-step explanation:

Reason: The 4 on top is an exponent. That exponent shows how many 3's you need to put. You need to put 4 3's, so 3x3x3x3

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Point C is reflected across the y-axis. Which point represents the reflection? ANWSER QUICKLY PLEASE!

sp2606 [1]

Answer:

whichever is the same on the y cordanate but not the x cordanate (opsite side of 0)

Step-by-step explanation:

Change the negativity of the first number in the cords are pair then chose that answer that is there

3 0

3 years ago

Pleasee help mee<br><br>12sin(x)-5cos(x)=6,5

abruzzese [7]

We turn -5,12 into polar coordinates. It's a Pythagorean Triple so

r = 13 Ф=arctan(-12/5) + 180° ( in the second quadrant )

so -5 = 13 cos Ф, 12 = 13 sin Ф

12 sin x - 5 cos x = 6.5

13 sinФ sin x + 13 cos Ф cos x = 6.5

13 cos(x - Ф) = 6.5

cos(x - Ф) = 1/2

cos(x - Ф) = cos 60°

x - Ф = ± 60° + 360° k integer k

x = Ф ± 60° + 360° k

x = 180° + arctan(-12/5) ± 60° + 360° k

That's the exact answer;

x ≈ 180° - 67.38° ± 60° + 360° k

x ≈ 122.62° ± 60° + 360° k

x ≈ { 62.62°, 182.62°} + 360° k, integer k

3 0

3 years ago

Empathy means being able to understand what others feel. To see how the brain expresses empathy, researchers recruited 16 couple

yulyashka [42]

Answer:

the residual is 0.2032

Step-by-step explanation:

The regression line has been given as:

Y^ = 0.00753X-0.06759

The paired observation for X is (31, 0.369)

The value of X is the empathy score under subject 15 = 31

The value of the brain activity under subject 15 is 0.369

So we have y^ = 0.00753(31) - 0.06759

= 0.1658

Then the residual = y - y^

= 0.369 - 0.1658

= 0.2032

Therefore the residual is 0.2032

Please check the attachment for the table, it will aid you in understanding the solution

4 0

3 years ago

Solve the equation for y.<br> 3x + 7y= 29

Oxana [17]

Answer:

y = $\frac{29-3x}{7}$

Step-by-step explanation:

3x + 7y = 29 ( subtract 3x from both sides )

7y = 29 - 3x ( divide both sides by 7 )

y = $\frac{29-3x}{7}$

5 0

2 years ago

Answers? Or a hint please I’m begging

olga2289 [7]

Hmm I would say x=q
Hope this helps u <3

6 0

3 years ago