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olya-2409 [2.1K]
3 years ago
7

I need to know the answer rn

Mathematics
2 answers:
alisha [4.7K]3 years ago
8 0
Option C is your answer.

Add (- 3) + 2 to get - 1 for the exponents. 2^ (-1) is the same as 1 / 2^1 which is 1/2. 
Lapatulllka [165]3 years ago
7 0
A. 1/32


Explanation:


There can't be negative exponents in the numerator, so we bring down the top 2 and take away the negative on the 3.

The equation is now:
\frac{1}{2^{2} 2^{3} }

To multiply exponents with the same base, leave the base alone and add the exponents.

\frac{1}{ 2^{5}}

Solve 2^5.

\frac{1}{32}
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35/48*100 fraction into percentage.​
MA_775_DIABLO [31]

Answer:

729167

Step-by-step explanation:

Now we can see that our fraction is 72.916666666667/100, which means that 35/48 as a percentage is 72.9167%.

6 0
3 years ago
You are making 10 tons of concrete that is 37.9% cement by mixing a 25% cement mixture with a 68% cement mixture.
Mnenie [13.5K]
The 10 tons should have 37.9% cement.

Let the 25% mixture be x tons

Then the 68% mixture will be (10 -x) tons.

Using formula for mixtures:
Let p for percentage and w for weight in tons.

p₁w₁ + p₂w₂ = pw

25*x + 68*(10-x) = 37.9*10

25x + 680 - 68x = 379

680 - 43x = 379

680 - 379 = 43x

301 = 43x

43x = 301

x = 301/43

x = 7

Recall that x, was for the 25% mixture, 7 tons.

a) For the 68% mixture, = 10 - x = 10 -7 = 3 tons.

b) For the 25% mixture = x = 7 tons.  
6 0
3 years ago
You and a friend are rolling two 6-sided number cubes and placing bets on the sum of the outcome. is it better to place a bet on
Zina [86]
To solve for this, we need to figure out the sum of any two numbers on the dice that will become a pair factor for the listed answers.
What I mean by that is that we need to find the probability between how many two numbers will sum up to the answer.

3 can be 1 + 2, that's it. 3 has a probability of (1).
4 has a sum of 1 + 3, and 2 + 2, that's it. 4 has a probability of (2).
7 has a sum of 1 + 6, 2 + 5, and 3 + 4. 7 has a probability of (3).
11 has a sum of 5 + 6, that's it. 11 has a probability of (1).

The numbers in parenthesis are the probabilities.
7 has the highest number, so 7 has the highest probability.

Your answer is: 7.

I hope this helps!
4 0
3 years ago
Read 2 more answers
Please really need help on this please
Vika [28.1K]
0,1 0,7 I think I use to do these
8 0
3 years ago
Simplify the expression 6(2x+1)+3(6x+2)
ExtremeBDS [4]

Answer:

30x+12

Step-by-step explanation:

distribute 6 into (2x+1) and 3 into (6x+2) basically multiply

12x+6+18x+6

combine like terms

12x+18x=30x

6+6=18

hope this helps

7 0
3 years ago
Read 2 more answers
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