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stealth61 [152]
4 years ago
6

) " alt=" log_{2}( {0.5}^{3} ) " align="absmiddle" class="latex-formula">
How do you solve this guys ?​
Mathematics
1 answer:
erik [133]4 years ago
6 0

Step-by-step explanation:

log_{2}( {0.5}^{3} ) \\\\=log_{2}( {0.5})^{3}  \\  \\  = 3log_{2} {0.5} \\  \\  = 3log_{2}  \frac{1}{2}  \\  \\  = 3(log_{2} 1 - log_{2} 2) \\  \\  = 3(0 - 1) \\  \\  = 3 \times ( - 1) \\  \\  =  - 3 \\  \\   \huge \purple{ \boxed{\therefore \: log_{2}( {0.5})^{3}  =  - 3}}

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Janet is 5 years older than her sister.the sum of their ages is 51.how old is her sister
Mazyrski [523]
Let us assume that the age of Janet's sister is = x
Then the age of Janet = x + 5
Now we also know that their combined age is equal to 51 years. Then we can write the equation as
x + (x + 5) = 51
2x + 5 = 51
2x = 51 -5
2x = 46
x = 46/2
   = 23
So the age of Janet = x + 5
                                = 23 + 5
                                 = 28 years
So the age of Janet's sister is 23 and Janet's age is 28
5 0
3 years ago
Read 2 more answers
Tell whether the triangle with the given side lengths is a right triangle. 36, 77, 85, true or false
torisob [31]

Answer:

True the triangle is a right triangle.

Step-by-step explanation:

the Pythagorean Theorem states that a^{2} +b^{2} =c^{2}

so,

85^{2} =7225\\77^{2} =5929\\36^{2} =1296\\5929+1296=7225

3 0
4 years ago
What is the cube root of 27a^12?<br> A. -за^<br> B.-За<br> C.За<br> D.за^4
umka21 [38]

Answer:

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Step-by-step explanation:

4 0
3 years ago
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At 4 p.m., the temperature started to change drastically. Each hour, for three hours, the temperature decreased by 7°F. Which ex
attashe74 [19]

Answer:

The correct option is A

Step-by-step explanation:

The question is incomplete because the options are not given for the question. Lets complete the question first. The options for this question are given below.

A)   (-1)(7+7+7)

B)   (-7)+(-7)+(-7)+(-7)

C)   7+7+7

D)   7+7+7+7

Now look at the conditions given. Supoose at 4pm, the temperature is x°F at 4pm. As temperature is decreasing 7°F every hours, and it happenss for 4 hours.

We can say that after one hour, temperature is:

5pm: x°F - 7°F

After two hours:

6pm: x°F - 7°F - 7°F

After three hours:

7pm: x°F - 7°F - 7°F - 7°F

Hence, the expression is given by:

-7 - 7 - 7

or

(-1)(7+7+7)

6 0
3 years ago
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Find the lowest common multiple of 3, 6 and 8
vlada-n [284]
It has to be 24.

Because 8 is not divisible by 3 or 6 it must be a multiply of two of the numbers. 3*6=18 but 8 is not divisible by that. 3*8 = 24. 24 is divisible by 3 (8), 6 (4), and 8 (3). So 24 is the answer. 

If this answer is correct please leave a thanks and a rating. :)
7 0
4 years ago
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