All categories

3 years ago

If 12^-x=5, what does 12^2x equal

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

7 0

Answer:

0.04

Step-by-step explanation:

12^(-x) = 5 (taking log on both sides)

log [ 12^(-x)] = log 5

-x log 12 = log 5

-x = log 5 / log 12

x = - (log 5/log12)

x = -0.6477

12^(2x)

= 12^[2(-0.6477)]

= 12 ^ (-1.295)

= 0.04

You might be interested in

Plsssssssssss Help!!!!!

klio [65]

Answer: A : no

B : no

C : yes

D : yes

E : yes

F : yes

PLEASE GIVE BRAINLIEST

6 0

3 years ago

Please solve this <br>Solve by completing the square. 4x2+8x−3=0

Greeley [361]

Step-by-step explanation:

4x2+8x−3=0

For this equation: a=4, b=8, c=-3

4x2+8x+−3=0

Step 1: Use quadratic formula with a=4, b=8, c=-3.

−b±√b2−4ac

x= −(8)±√(8)2−4(4)(−3)

2(4)

x= −8±√112

8 x=−1+

1 2 √7 or x=−1+

−1 2 √7

Answer: x=−1+

1 2√7 or x=−1+

−1 2 √7

7 0

2 years ago

Which are the solutions of a quadratic equation x squared equals -5 x - 3

Ksju [112]

Answer:

Desmos says (-4.303 and -0.697)

Step-by-step explanation:

6 0

3 years ago

Someone please help!

3241004551 [841]

Answer:

just multiply every number by 2 and it should work out.

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Will give brainliest to correct answer! Given that cos Ф=-8/17 and sin Ф is negative, determine the value of tan Ф.

Kipish [7]

Answer: option 3 is the correct answer

Step-by-step explanation:

Let us look at the various trigonometric ratios

Sin Ф = opposite side/ hypotenuse

Cos Ф = adjacent side / hypotenuse

Tan Ф = opposite side / adjacent side

Therefore, tan Ф = sin Ф / cos Ф

This means that if cos Ф=-8/17 and sin Ф is negative, then the hypotenuse is negative

To determine the adjacent side, we will apply Pythagoras theorem

Hypotenuse ^2 = opposite ^2 + adjacent ^2

-17^2 = 8^2 + adjacent^2

adjacent^2 = 289 - 64 = 225

adjacent = √225 = 15

tan Ф = 8/15

5 0

4 years ago