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3 years ago

7. An investment account pays 3.9% interest compounded semi-annually. If

Mathematics

1 answer:

Likurg_2 [28]3 years ago

5 0

Answer:

the balance would be 48000

Step-by-step explanation:

First you really dont have to do with the 3.9%

If 4000 is invested and you need the balance after 12 years you just multiply

4000 times 12=48000

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Fill in Sin, Cos, and tan ratio for angle x. Sin X = 4/5 (28/35 simplified)

Fantom [35]

Answer:

Given: $\sin(x) = (4/5)$ .

Assuming that $0 < x < 90^{\circ}$ , $\cos(x) = (3/5)$ while $\tan(x) = (4/3)$ .

Step-by-step explanation:

By the Pythagorean identity $\sin^{2}(x) + \cos^{2}(x) = 1$ .

Assuming that $0 < x < 90^{\circ}$ , $0 < \cos(x) < 1$ .

Rearrange the Pythagorean identity to find an expression for $\cos(x)$ .

$\cos^{2}(x) = 1 - \sin^{2}(x)$ .

Given that $0 < \cos(x) < 1$ :

$\begin{aligned} &\cos(x) \\ &= \sqrt{1 - \sin^{2}(x)} \\ &= \sqrt{1 - \left(\frac{4}{5}\right)^{2}} \\ &= \sqrt{1 - \frac{16}{25}} \\ &= \frac{3}{5}\end{aligned}$ .

Hence, $\tan(x)$ would be:

$\begin{aligned}& \tan(x) \\ &= \frac{\sin(x)}{\cos(x)} \\ &= \frac{(4/5)}{(3/5)} \\ &= \frac{4}{3}\end{aligned}$ .

7 0

2 years ago

What solution is this w = 10

alina1380 [7]

Answer:

w = 10

Step-by-step explanation:

9(w - 9) -2 = -7 + 7(w -8)

Expand:

9w - 81 - 2 = -7 + 7w - 56

Rearrange:

9w - 7w = -7 - 56 + 81 + 2

2w = 20

w = 10

3 0

3 years ago

List the opposite of the following numbers: -4, 1, -2.5, 101, 1/2

maksim [4K]

Answer:

Step-by-step explanation:

The opposite of :-

-4=4

1= -1

-2.5= 2.5

101 = -101

1/2= -1/2

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3 years ago

Using the chart below find the median income level for the states provided.

Romashka [77]

Answer:

$54870.50

Step-by-step explanation:

Order them from smallest to largest and look at the middle number.

7 0

3 years ago

Read 2 more answers

What is the order pair for the question y=-3x-3

posledela

Answer:

You get two, (0,-3) and (1,0)

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3 years ago