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Alex777 [14]
3 years ago
8

Evaluate the expression if g+2, r+3, and t=11. g+6t

Mathematics
1 answer:
Ivahew [28]3 years ago
5 0

Answer:

I think you copied this wrong

Step-by-step explanation:

Most likely g = 2

Therefore (2) + 6(11)

2+66=68

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Sung Lee invests $10,000 at age 18. He hopes the investment will be worth $30,000 when he turns 25. If the interest compounds co
zalisa [80]

Answer:

r=17%

Step-by-step explanation:

P is the investment

A is the targeted amount

t= time (25-18=7 years)

A=P(1+r)^t

30000=10000(1+r)^7

(1+r)^7=30000/10000

r=\root(7)(3)-1

r=0.16993 ≅0.17= 17%

check: A=P(1+r)^t ⇒10000(1+0.17)^7=30012≅30000

3 0
3 years ago
Find dy/dx and d2y/dx2. x = cos(2t), y = cos(t), 0 < t < π
pogonyaev
\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\frac{\mathrm dy}{\mathrm dt}}{\frac{\mathrm dx}{\mathrm dt}}

y=\cos t\implies\dfrac{\mathrm dy}{\mathrm dt}=-\sin t
x=\cos2t\implies\dfrac{\mathrm dx}{\mathrm dt}=-2\sin2t=-4\sin t\cos t
\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{-\sin t}{-4\sin t\cos t}=\dfrac14\sec t

Let z=\dfrac{\mathrm dy}{\mathrm dx}. Then

\dfrac{\mathrm d^2y}{\mathrm dx^2}=\dfrac{\mathrm dz}{\mathrm dx}=\dfrac{\mathrm dz}{\mathrm dt}\dfrac{\mathrm dt}{\mathrm dx}=\dfrac{\frac{\mathrm dz}{\mathrm dt}}{\frac{\mathrm dx}{\mathrm dt}}
\implies\dfrac{\mathrm d^2y}{\mathrm dx^2}=\dfrac{\frac{\mathrm d}{\mathrm dt}\left[\frac14\sec t\right]}{-4\sin t\cos t}=\dfrac{\frac14\sec t\tan t}{-4\sin t\cos t}=-\dfrac1{16}\sec^3t
4 0
4 years ago
Plz help me well mark brainliest!....
hodyreva [135]
Answer

C

Explanation

The predators will increase because if the prey population goes up, there will be more predators first of all, and second of all the predators will not have to worry about food, and will reproduce more
7 0
3 years ago
Help please! This has to do with the Pythagorean theorem.
Natasha2012 [34]
ANSWER

6.63

Explanation:

Equation used: c2 = a2 + b2 ( rearranged due to having the two sides )

c2 = 12^2 + 10^2

c2 = 144 - 100

c2 = 44

c2 = 6.63 ( the square root of 44 )

5 0
3 years ago
What is 5 divided by 6^3 - 0.25
Olenka [21]

Answer:

5 \div {6}^{3}  - 0.25  \\   = 5 \div (216) - (0.25) \\  = 5 \div 215.75 \\  =  \frac{20}{863}  \\  = 0.0232

6 0
3 years ago
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