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Tpy6a [65]
3 years ago
13

Q6 Q19.) Write the expression as the​ sine, cosine, or tangent of an angle. Then find the exact value of the expression.

Mathematics
1 answer:
poizon [28]3 years ago
3 0
Using sin(A+B) = sinAcosB + cosAsinB

sin20cos40 + cos20sin40 = sin(20+40) = sin60degree

= \frac{ \sqrt{3} }{2}
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You invest $2,000 in an account that is compounded annually at an interest rate of 5%. You never withdraw money from the account
Yuki888 [10]
Formula for amount for compound interest:

Amount, A =  P(1 + r/100)^n

Where r is rate, P is principal, and n is the number of years.

P = 2000, r = 5, n = t years.

A = 2000( 1 + 5/100)^t

A = 200(1+0.05)^t

A = 2000(1.05)^t

A(t) = 2000(1.05)^t

None in the option look like the answer we have.

Except you didn't type the last option correctly.    

5 0
3 years ago
Read 2 more answers
A metal washer has an outer diameter of 14mm and an inner diameter of 6mm.Use the value of 3.14 for the to find the area of the
Elena L [17]

Answer:

502.4 mm^2

Step-by-step explanation:

First find the area of the larger circle, and then that of the smaller one.

Then subtract the latter (2nd) area from the first.

larger circle area           smaller circle area

-------------------------           ---------------------------

 3.14(14 mm)^2                   3.14(6 mm)^ 2

This comes out to 3.14[14^2 - 6^2] mm^ 2 =  3.14[196 - 36] mm^2, or

3.14(160 mm^2) = 502.4 mm^2

The area of the metal washer is 502.4 mm^2.

3 0
3 years ago
The flag football league eventually had 72 kids sign up for the spring season after putting six teams together from the original
enyata [817]

Answer:

each team has 12

Step-by-step explanation:

8 0
3 years ago
2. Which inequality matches the graph ? *
Sever21 [200]

Answer:

x > -7

Step-by-step explanation:

the one u picked is correct

6 0
3 years ago
Read 2 more answers
Solve for x: −2(x 3) = −2(x 1) − 4. 2 3 all real numbers no solution
Crank
-2(x + 3) = -2(x + 1)
-2x - 6 = -2x - 2
-2x + 2x = -2 + 6
0 = 4

Therefore, the system has no solution.
4 0
3 years ago
Read 2 more answers
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