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3 years ago

Solve the equation

Mathematics

2 answers:

12345 [234]3 years ago

7 0

Answer:

C) x = -5

Step-by-step explanation:

(1/3) ^ x+1 = 1/9 ^ x+3

First, we make the bases the same.

(1/3) ^ x+1 = (1/3) ^ 2(x+3)

Then, we can remove the bases.

x + 1 = 2x + 6

x = -5

crimeas [40]3 years ago

3 0

Answer: the answer is C.

try using the app

Step-by-step explanation:

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Help please i know its alot but i am in danger of failing for the year if i fail this test :(

Lena [83]

Answer:

(20.) D is the correct answer

(19.) A is correct

(18.) A is correct

(17.) D is correct

(15.) A is correct

Step-by-step explanation:

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3 0

3 years ago

Solve the equation below for x. 500 = 25e ^ (2x)

Zigmanuir [339]

Answer:

x = i π n + log(20)/2 for n element Z

Step-by-step explanation:

Solve for x:

500 = 25 e^(2 x)

500 = 25 e^(2 x) is equivalent to 25 e^(2 x) = 500:

25 e^(2 x) = 500

Divide both sides by 25:

e^(2 x) = 20

Take the natural logarithm of both sides:

2 x = 2 i π n + log(20) for n element Z

Divide both sides by 2:

Answer: x = i π n + log(20)/2 for n element Z

7 0

4 years ago

Explain how you can use multiplication to find the quotient 3/5 divided by 3/15. Then evaluate the expression

sveta [45]

when you divide 2 fractions, you reverse the second fraction then use multiplication

3/5 divided by 3/15 becomes

3/5 x 15/3 = 45/15 = 3

3 0

3 years ago

A man is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an an

liubo4ka [24]

Answer:

The speed in of the plane is 115.47 m/sec

Step-by-step explanation:

Given:

Height at which the plane is flying = 6000 m

Angle of elevation at the radar base = 30 Degrees

Angle of elevation at the radar base after one minute = 60 Degrees

To Find:

The Speed of the plane in meter per second = ?

Solution:

Let us use the tangent of the angle to find the distance (d) to a point directly below plane:

when the angle is 30 degrees

$tan(30) = \frac{6000}{d1}$

$d1 = \frac{6000}{tan(30)}$

$d1 = \frac{6000}{0.577}$

d1 = 10392.3 meters

when the angle is 60 degrees

$tan(60) = \frac{6000}{d2}$

$d2 = \frac{6000}{tan(60)}$

$d2 = \frac{6000}{1.732}\\$

d2 = 3464.1 meters

distance travelled by aircraft in 1 min is

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

Now converting to m/sec

=> $\frac{6928.2}{60}$

=>115.47 m/sec

4 0

3 years ago

Evaluate the following expression. 3^-2

OverLord2011 [107]

3^-2 = 0.111111111 ← Answer

7 0

3 years ago

Solve the equation ​

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