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Artemon [7]
3 years ago
9

A certain number added twice to itself equals 96.what is the number?

Mathematics
2 answers:
irina1246 [14]3 years ago
6 0
Your answer is 48, because 96/2 is 48

Hope this helps
olchik [2.2K]3 years ago
6 0
Your answer will be 32. First your equation will be x +2x=96. Combine like terms 3x=96. Then isolate x. That means to divide 96 by three with =32
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X = 34.13

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Which describes the turn the angle on the circle shows?
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2 years ago
I need with #10, please?
777dan777 [17]

Answer:

h=7ft

Step-by-step explanation:

sinФ=opposite/hypotenuse

sin45°=5/h

0.71=5/h

multiply via by h

0.71h=(5/h)h

h cancel h it remains 5

0.71h=5

divide through by 0.71

0.71h/0.71=5/0.71

h=7.04ft

h=7ft approximately



4 0
3 years ago
How many ways can 10 runners finish first, second, and third in a race?
olga nikolaevna [1]
Let's call the 10 runners A B C D E F G H I J
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ACH
ACI
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AFC
AFD
AFE
AFG
AFH
AFI
AFJ
AGB
AGC
AGD
AGE
AGF
AGH
AGI
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AHB
AHC
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The above is 60 different ways, but now B C D E F G H I J have to come first, and the proses starts again, until we have covered them all. I'm not going to write them all out but in theory, there is 540 different ways. 9*60=540.
4 0
3 years ago
3x - 3y = 9 and x + 3y = 12 <br> Elimination
Firlakuza [10]

Answer:

x=5.25,y=2.25

Step-by-step explanation:

We can add the two equations to eliminate the variable y and solve for x:

3x-3y+x+3y=9+12

4x=21

x=5.25

Now, we can use substitution to solve for y:

x+3y=12 (given)

5.25+3y=12

3y=12-5.25

=6.75

y=2.25

Hope this helps :)

8 0
3 years ago
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