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Sholpan [36]
2 years ago
6

Find the value of the following without any exponents.

Mathematics
2 answers:
FrozenT [24]2 years ago
6 0
A)7^2=1/49
B)(8^4)^2 divided by 8^11=1/512
soldier1979 [14.2K]2 years ago
3 0

Answer:

A.) 1/49

B.) 1/512

Step-by-step explanation:

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Tre's walk from his house to the bus stop is of a mile. He is able to complete the walk each day in of an hour. What is Tre's wa
umka21 [38]

Tre's walking speed is 1mi/hr.

Data given;

  • distance = 1 mile
  • time = 1 hour

<h3>Speed or Velocity</h3>

This is the rate at which an object covers a distance within a particular time frame.

speed = \frac{distance}{time}

substituting the values into the equation

speed = \frac{1}{1}\\ speed = 1 m/s

Tre's walking speed is 1mi/hr

Learn more on speed, rate here;

brainly.com/question/11408596

brainly.com/question/2296493

8 0
2 years ago
Find the roots of the parabola given by the following equation <br> 2x^2+5X-9=2x
natta225 [31]

Answer:

x=-3\:or\:x=\frac{3}{2}

Step-by-step explanation:

The given parabola has equation

2x^2+5x-9=2x

We rewrite in standard form to obtain:

2x^2+5x-2x-9=0

2x^2+3x-9=0

Split the middle terms to get:

2x^2+6x-3x-9=0

Factor by grouping:

2x(x+3)-3(x+3)=0

(x+3)(2x-3)=0

x=-3\:or\:x=\frac{3}{2}

7 0
3 years ago
Why is it important to describe the variable in an expression?
Korvikt [17]

Answer: They show numerical value. You have to make them clear.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
If log(x + y) = log 3 + ½log x + ½log y, prove that x² + y² = 7xy​
Free_Kalibri [48]

Answer:

See Explanation

Step-by-step explanation:

log(x + y) = log3 +  \frac{1}{2} logx+  \frac{1}{2} logy \\  \\ log(x + y) = log3 +    logx ^{\frac{1}{2}} +   logy ^{\frac{1}{2}}\\  \\  log(x + y) = log3 +    log(xy) ^{\frac{1}{2}} \\  \\ log(x + y) =  log[3(xy) ^{\frac{1}{2}}] \\  \\ x + y = 3(xy) ^{\frac{1}{2}} \\  \\ squaring \: both \: sides \\  {(x + y)}^{2}  =  \bigg(3(xy) ^{\frac{1}{2}} \bigg)^{2}  \\  \\  {x}^{2}  +  {y}^{2}  + 2xy = 9xy \\  \\  {x}^{2}  +  {y}^{2}  = 9xy - 2xy \\  \\   \purple{ \bold{{x}^{2}  +  {y}^{2}  = 7xy}} \\ thus \: proved

7 0
3 years ago
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If ΔABC ΔDEC, what is m∠D? A. 40° B. 150° C. 60° D. 80°
Nina [5.8K]
I think that the best answer here would be that A = 40 degrees. 
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3 years ago
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