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antiseptic1488 [7]
3 years ago
15

How do you convert fractions to a specific base with exponents? Is there a specific way or equation for this? For example, i nee

d to solve 1/2^3-x=2^3x-7 but first i have to make the bases the same. I'm not sure how to get 1/2 equal to 2 with exponents
Mathematics
1 answer:
Lilit [14]3 years ago
8 0

Answer:

\frac{1}{2}  =  {2}^{ - 1}

Step-by-step explanation:

remember the property

{a}^{ - n}  =  \frac{1}{ {a}^{n} }

then u get equation with same base

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At the local video game store, a popular game went from $120 to $85 in a weeks time. What is the percent decrease of the item? R
Svetllana [295]

Answer: 29%

Step-by-step explanation:

The game went from the price of $120 to $85.

In calculating percentage decrease, use the following formula:

= (New Price - Old price) / Old price

= (85 - 120) / 120

= -35 / 120

= -29%

<em>Price therefore decreased by 25%</em>

6 0
2 years ago
12(4x−5) 52=10 drag and drop the correct number in the box. x= the answers are 5 12 8 20
sergij07 [2.7K]
<span>12*(4x−5)/52=10 if this is the equation
the value for x would be
x </span>≈ 12



3 0
3 years ago
Danielle’s chemistry professor has a complicated grading system. Each lab counts once and each test counts as two labs. At the e
Murrr4er [49]

Answer:

92

Step-by-step explanation:

Lab Scores are 84, 81, and 93

Test Scores are 89 and 94

Each lab counts once and each test counts as two labs. At the end of the semester there is a final lab that counts as three regular labs.

Total Number of Labs= (3X1)+(2X2)+(1X3) =3+4+3 =10

To recieve an A(90), the average of her scores must be 90.

Let her final lab score =b

Refer to the attached diagram

Total Score=624+3b

For her average =90

\frac{624+3b}{10}=90

Cross multiplying

624+3b =90 X 10

624+3b =900

3b =900-624

3b =276

Dividing both sides by 3

b= 92

She must score 92 in her final lab to receive an A.

6 0
3 years ago
I need some help on this :)
Softa [21]
Photo math helps it worked for me so might help you :)
6 0
2 years ago
Michelle is rolling two six-sided dice, numbered one through six. What is the probability that the sum of her rolls is 8?
Verdich [7]
The probability that the sum of Michelle's rolls is 4 is 0.083
∴ P(A)=0.083
Step-by-step explanation:
Given that Michelle is rolling two six-sided dice, numbered one through six.
To find the probability that the sum of her rolls is 4:

∴ n(s)=36
Let P(A) be the probability that the sum of her rolls is 4
Then the possible rolls with sums of 4 can be written as

n(A)=3
The probability that the sum of her rolls is 4 is given by



=0.083
∴ P(A)=0.083
∴ the probability that the sum of Michelle's rolls is 4 is 0.083

-please give brainliest if correct!
3 0
2 years ago
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