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zheka24 [161]
3 years ago
12

Evaluate each expression. 3^-2

Mathematics
2 answers:
Rus_ich [418]3 years ago
7 0
9 is the answer negatives cancel out creating positve
Over [174]3 years ago
7 0
3^2 =  \dfrac{1}{3^2}  =  \dfrac{1}{9}
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21 years ago Alvin was 11 times older than Tomio. The sum of their present age is 54.
DaniilM [7]

Answer:

Not sure exactly what answer you are looking for. But I assume it is the ages of them. Their original ages would be Tomio - 1 year old, Alvin - 11 years old. Now, Tomio - 22, Alvin - 32

Step-by-step explanation:

1(tomio) x 11 = 11 (alvin) (add 21 to these)

22+32=54

hope that makes sense

6 0
2 years ago
The price of an item yesterday was $120 . Today, the price fell to $54 . Find the percentage decrease.
Nesterboy [21]

Answer:

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8 0
3 years ago
X+3=2X+6(x+4)<br> Please Answer!
nataly862011 [7]
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4 0
2 years ago
An obtuse triangle has two angles 45 n 18 ,and a third unknown angle theta what's the value of the unknown angle​
zlopas [31]

<u>Answer:</u>

An obtuse triangle has two angles 45 and 18. The value of the unknown angle is 117^{\circ}

<u>Solution:</u>

Given that two angles of an obtuse triangle is 45 and 18.  

Third angle is θ  

We are asked to find the value of third unknown angle theta

According to <em>angle sum property of triangle</em>, sum of three angles of triangle is 180^{\circ}

This means in our case sum of 45, 18 and θ should be 180^{\circ}

\begin{array}{l}{=>45+18+\theta=180} \\ {=>\theta=180-63=117^{\circ}}\end{array}

Hence value of unknown third angle of an obtuse triangle is 117^{\circ}

7 0
3 years ago
What is the value of x in the figure below
kari74 [83]
Answer: X=30



Hope that helped!!!
8 0
2 years ago
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