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san4es73 [151]
3 years ago
13

How do you calculate compound interest? Please help me understand this

Mathematics
1 answer:
photoshop1234 [79]3 years ago
8 0

Answer:

Compound interest is calculated by multiplying the initial principal amount by one plus the annual interest rate raised to the number of compound periods minus one

Step-by-step explanation:

i just did it

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Find the perimeter of the figure to the nearest hundredth. PLZ HELP PLZ DUE TODAY
kkurt [141]

Answer:

perimeter of the figure = 37 ft

Step-by-step explanation:

r = 1/2 × (12 - 3 - 3)

r = 1/2 × 6

r = 3 ft

circumference = 2 π r

circumference = 2 × 3.14 × 3

circumference = 18.84

perimeter of the figure = 3 + 3 + 3 + 3 + 3 + 3 + 18.84

perimeter of the figure = 36.84

perimeter of the figure = 37 ft

3 0
3 years ago
I need help on now!!What is one difference??
Mumz [18]
They're alike because they each have 5 sides. They're different because figure A has no right angles but figure B does.

4 0
3 years ago
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X^2y^8/x^7y^6 if x= -2 and y= 4
damaskus [11]

Answer:

- \frac{1}{2}

Step-by-step explanation:

Given

\frac{x^2y^8}{x^7y^6}

= \frac{y^{(8-6)} }{x^{(7-2)} }

= \frac{y^2}{x^5} , substitute values

= \frac{4^2}{(-2)^{5} }

= \frac{16}{-32}

= - \frac{1}{2}

7 0
3 years ago
michaela wrote her name in block letters. She colored 3/4 of the letters pink. She drew green dots on 1/2 of the pink letters. w
Vedmedyk [2.9K]

namely, what is 1/2 of 3/4, well, is just their product.


\bf \stackrel{\textit{half of three quarters}}{\cfrac{3}{4}\cdot \cfrac{1}{2}}\implies \cfrac{3}{8}

5 0
3 years ago
6. Find an exact value. (1 point)
vladimir2022 [97]
<span>6 Find an exact value. 
sin 75°
</span>sin(A+B)=sin(A)cos(B)+cos(A)sin<span>(B)
</span>sin(45)=cos(45)=(2^0.5)/2    sin(30)=0.5      cos(30)=(3^0.5)/2
sin(45+30)=sin(45)cos(30)+cos(45)sin(30)=(6^0.5+2^0.5)/4
the answer is the letter d) quantity square root of six plus square root of two divided by four.

<span>7. Find an exact value. 
sine of negative eleven pi divided by twelve.

</span>sin(-11pi/12) = -sin(11pi/12) = -sin(pi - pi/12) = -sin(pi/12) = -sin( (pi/6) / 2)

= - sqrt( (1-cos(pi/6) ) / 2) = -sqrt( (1-√3/2) / 2 ) = -(√3-1) / 2√2=(√2-√6)/4
the answer is the letter c) quantity square root of two minus square root of six divided by four.

<span>8. Write the expression as the sine, cosine, or tangent of an angle. 
sin 9x cos x - cos 9x sin x
</span>

sin(A−B)=sinAcosB−cosAsinB

sin(9x−x)= sin9xcosx−cos9xsinx= sin(8x)

the answer is the letter c) sin 8x

<span>9. Write the expression as the sine, cosine, or tangent of an angle. 
cos 112° cos 45° + sin 112° sin 45°

</span>

cos(A−B)=cosAcosB<span>+sinA</span>sinB

cos(112−45)=cos112cos45<span>+sin112</span>sin45=cos(67)

the answer is the letter d) cos 67°

10. Rewrite with only sin x and cos x.

sin 2x - cos 2x

 

sin2x = 2sinxcosx<span>
cos2x = (cosx)^2 - (sinx)^2 = 2(cosx)^2 -1 = 1- 2(sinx)^2</span>

sin2x- cos2x=2sinxcosx-(1- 2(sinx)^2=2sinxcosx-1+2(sinx)^2

sin2x- cos2x=2sinxcosx-1+2(sinx)^2

<span>the answer is the letter <span>b) 2 sin x cos2x - 1 + 2 sin2x</span></span>
4 0
3 years ago
Read 2 more answers
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