2 years ago

PLEASE HURRY AND EXPLAIN IT BECAUSE I HAVE TO SHOW MY WORK!!!

1 answer:

3 0

We found the answer of 4.5. I had her add another 1.5 which gave us the number 6 in the chart to show proof to her.

Step-by-step explanation:

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EleoNora [17]

$100 = \frac{1}{2} 20 \times (b) \\ 100 = 10b \\ b = 10$

8 0

2 years ago

dsp73

We have:

$cot(-x)cos(-x)+sin(-x)=-\frac{1}{f(x)}$

Then we use trigonometric identities to change the negative sign of the trigonometric functions, so:

$-sin(x)-cot(x)cos(x)=-\frac{1}{f(x)}$

We clear f(x):

$f(x)=\frac{1}{sin(x)+cot(x)cos(x)}=\frac{1}{sin(x)+\frac{cos(x)}{sin(x)}cos(x)}=\frac{1}{sin(x)+\frac{cos^2(x)}{sin(x)}}$

we simply what we can:

$f(x)=\frac{1}{\frac{sin^2(x)+cos^2(x)}{sin(x)}}=sin(x)$

Thus, the correct answer is;

$f(x)=sin(x)$

6 0

1 year ago

devlian [24]

Can you send a picture?

7 0

2 years ago

777dan777 [17]

Step-by-step explanation:

${x}^{2} + 14x + 24 = 0 \\ {x}^{2} + 12x + 2x + 24 = 0 \\ x(x + 12) + 2(x + 12) = 0 \\ (x + 12)(x + 2) = 0\\ x = - 12 \\ x = - 2$

6 0

3 years ago

kifflom [539]

-k=7

divide each side by -1

-k/-1 = 7/-1

k = -7

3 0

3 years ago