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3 years ago

Use the model below to calculate 9 ÷ 1 3 please help.9/33/913 1/227

Mathematics

1 answer:

ki77a [65]3 years ago

4 0

Answer:

9/13

Step-by-step explanation:

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Solve for x X^2+6x+9=20

Masja [62]

Answer:

x = 1.47 or x = -7.47

Step-by-step explanation:

x²+6x+9=20

This is a quadratic equation

x²+6x+9-20=0

x²+6x-11=0

Step 1 : Write the quadratic formula

x = -b±√b²-4(a)(c)

Step 2 : Substitute values in the formula

a = 1

b = 6

c = -11

x = -6±√6²-4(1)(-11)

2(1)

x = -6±√80

x = -3 + 2√5 or x = -3 - 2√5

x = 1.47 or x = -7.47

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Step-by-step explanation:

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Question 13: 90, Question 14: y = $3\sqrt{10}$ , Question 15: x = $17\sqrt{3}$ , Question 16: y = $34\sqrt{3}$ .

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2 years ago

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2 years ago

Someone please help

KIM [24]

Answer:

Step-by-step explanation:

Exponential function representing final amount with compound interest compounded continuously,

$A=Pe^{rt}$

Here, A = Final amount

P = principal amount

r = Rate of interest

t = Duration of investment

For P = $9600

r = 6%

A = 2 × 9600 = $19200

By substituting these values in the formula,

$19200=9600(e)^{0.06\times t}$

$2=e^{0.06t}$

$ln(2)=ln(e^{0.06t})$

ln(2) = 0.06t

t = $\frac{0.693147}{0.06}$

t = 11.55245

t ≈ 11.5525 years

Any amount will get doubled (with the same rate of interest and duration of investment) in the same time.

Therefore, $960000 will get doubled in 11.5525 years.

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3 years ago