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mestny [16]
2 years ago
15

For what value of x does 4^x=(1/8)^x+5 A) -15 B)-3 C)3 D) 15

Mathematics
1 answer:
STALIN [3.7K]2 years ago
8 0

the value of x is -3. Option B

<h3>How to determine the value</h3>

WE have the expression to be;

4^x=(1/8)^x+5

With the knowledge of indices, we have that;

2 = 2 ^1

4 = 2^2

8 = 2^3

16 = 2^4

32 = 2^5

So from this given information,

we can express the expression as;

4^x = 2^2x

1/8^x = 2^-3x

Substitute into the formula

2^2x = 2^-3x - 15

Cancel out the like terms

2x = -3x - 15

collect like terms

2x + 3x = - 15

x = -15/ 5

x = -3

Thus, the value of x is -3. Option B

Learn more about index notation here:

brainly.com/question/10339517

#SPJ1

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PLEASE HELP!!!!!!!!!
Irina-Kira [14]

Answer:

114

Step-by-step explanation:

The external angle measure is equal to the half of difference between the larger intercepted arc (5x-12) and the smaller intercepted arc (3x)

32 = (5x-12 -3x)/2

combine like terms in parenthesis and multiply both sides by 2

32·2 = 2x-12

multiply 32·2 = 64, and add 12 to both sides

64 + 12 = 2x

add 64+12 = 76, and divide both sides by 2 to isolate x

76/2 = x

38 = x

The measure of arc AB is 3x.

Substitute x for 38

Measure of arc AB = 3x = 3·38 = 114

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3 years ago
Math question down below
MakcuM [25]

Answer:

B. 0.583

Step-by-step explanation:

3 0
4 years ago
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Check whether (0, -2) is solution of the equation x - 2y = 4 or not.
Elan Coil [88]

Answer: Yes, it is a solution

===================================================

Explanation:

Any ordered pair, aka point, is of the form (x,y)

x is always listed first

The point (0,-2) means x = 0 and y = -2 pair up together

Let's plug them into the equation and simplify everything

x-2y = 4

0-2(-2) = 4

0+4 = 4

4 = 4

We end up with a true statement since we get the same thing on both sides, therefore the original equation is true for (x,y) = (0,-2)

(0,-2) is a solution to the given equation

Phrased another way: the point (0,-2) is on the line x-2y = 4. This point is the y intercept.

6 0
3 years ago
X+3 &lt; -2 solve inequality
Delicious77 [7]
Take away 3 from both sides,

x+3<-2
   -3  -3 
=x<-5

answer=x<-5
hope this helps.......
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3 years ago
7. On Monday 2
mr_godi [17]
Well, 2/3 is .66%, 1/2 is .5%, 3/4 is .75%, and 7/8 is .875%. that being said, 7/8 is closest to one, so it is the largest fraction which would mean your answer is c.) Tuesday.
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4 years ago
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