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3 years ago

Help???? I can’t figure this out

Mathematics

1 answer:

earnstyle [38]3 years ago

7 0

Answer:

a. 1/Y

Step-by-step explanation:

sin=opposite/hypotenuse

sin t = 1/Y

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Two numbers, 3 and a, have a geometric mean of 9. Find the value of a.

Ket [755]

The geometric mean of two numbers x and y is √(xy).

So, if the geometric mean of 3 and a is 9 =>

9 = √(3a)

=> 9^2 = 3a

=> a = 9^2 / 3

a = 81 / 3

a = 27

Answer: the value of a is 27.

4 0

3 years ago

Write cos 53 degrees in terms of sine.

SOVA2 [1]

Cos(x) = sin(90 - x)
cos(53) = sin(90 - 53)
cos(53) = sin(37)

7 0

3 years ago

A painting is purchased for $250. If the value of the painting doubles every 5 years, then

ch4aika [34]

After 5 years, value doubles.
Hence after 5 years, value is 250 x 2 = 500
After another 5 years, value doubles.
500 x 2 = 1000
Ans: $1000

7 0

2 years ago

Tammy deposited $520 in the bank account that earns simple interest every year after 5 years she had earned $156 and interest if

aleksley [76]

Answer:

6%.

Step-by-step explanation:

We have been given that Tammy deposited $520 in the bank account that earns simple interest every year after 5 years she had earned $156.

To find the interest rate we will use simple interest formula.

$I=P*r*T$

I= Interest.

P= Principal amount.

r=Annual interest rate (in decimal form).

T= Time in years.

We have been given that I=156, T=5, P=520

Upon substituting our values in above formula we will get,

$156=520*r*5$

$156=2600r$

$r=\frac{156}{2600}$

$r=0.06$

Let us multiply 0.06 by 100 to convert annual interest rate in percentage.

$0.06*100=6 \text{ percent}$

Therefore, the annual interest rate was 6%.

6 0

4 years ago

(N^3 - N^4) - (3n^3- 7n^4)

Free_Kalibri [48]

If you would like to solve (n^3 - n^4) - (3n^3 - 7n^4), you can do this using the following steps:

(n^3 - n^4) - (3n^3 - 7n^4) = <span>n^3 - n^4 - 3n^3 + 7n^4 = n^3 - 3n^3 - n^4 + 7n^4 = -2n^3 + 6n^4
</span>
The correct result would be <span>-2n^3 + 6n^4.</span>

3 0

3 years ago