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mixer [17]
3 years ago
12

Select all the expression that are equivalent to 1/7^-2​

Mathematics
1 answer:
vivado [14]3 years ago
7 0

Answer:

any awnser that is equivalent to 49 is correct

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Team A and team B play a series. The first team to win three games wins the series. Each team is equally likely to win each game
andrezito [222]

Answer:

Probability is \frac{1}{4}

Step-by-step explanation:

This problem can be easily done tree diagram.

Few things keep in mind :

  • From starting of match three victories of A.
  • Less then or equal to two victories of B.
  • In each matches there are two possibilities either favourable for A or B.

First case if A wins first match

  1.       two victories of B then two of A
  2.       victory of B then A then B then A
  3.       victory of B then A then A

Second case if B wins first match(favorable)

  1.      victory of two B then three A

So total cases are 4 and favorable is one

  probability=\frac{1}{4}

[Tree diagram is in attachment]

7 0
4 years ago
A number that is 5 more than twice x
iragen [17]
If x is any given number than I will use the Number five
Your equation will look like this
5^5=25
7 0
4 years ago
1. If 5x + 6 = 10, what is the value of 10x + 3?
Digiron [165]
Here the question is simple.
All because, we only need to find the value of x.
We are given two equations.
5x + 6 = 10 and 10x + 3 =?
So, we will find the the value of x in the first equation, so that we can substitute the value of x in the second one and there we are with the answer.
5x + 6 = 10
For finding the value of x, all we have to do is,
Transpose the number 6 to 10
Therefore. 5x = 10 - 6 ( Take the equal sign as The Magic Bridge on which if anyone crosses it , will change its sign.)
So we have,
5x = 4
So x = 4/5 ( Multiplication will change to division after crossing the equal sign)
( Doubtful? Substitute the value of x and try!)
Now that we got the value of x,
We can just simply substitute the value of x in the second equation.
10x + 3 = ?
x = 4/5
10*4/5 +3 => 5 and 10 get canceled to 2 at the numerator.
By normal multiplication and then addition, we will get,
8 + 3 = 11
Hope this helps!!!! :)
6 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!
Grace [21]

Answer:

x = 8/3 and y = 32/3

Step-by-step explanation:

Add the two equations, getting -3y = -32, thus y = 32/3

Sub for y in first equation, getting 5x + 32/3 = 24

5x = 40/3

x = 8/3

5 0
3 years ago
Read 2 more answers
Jamiah bought two 125 ounce bags of flour for baking. He used up 32 ounces of flour to bake a batch of brownies. How much flour
V125BC [204]

Answer: its 218

Step-by-step explanation: you just have to subtract 250 minus 32

7 0
2 years ago
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