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AlladinOne [14]
3 years ago
10

Help me please i need the correct answer

Mathematics
1 answer:
BaLLatris [955]3 years ago
7 0

Answer:

First one is 25/2

Step-by-step explanation:

12×2+1=25/2

9×4+1=36/4

cross multiply and you get

100/

divide both by 2 and you get 50/4 then you divide both by 2 again and you get 25/2 because you can't reduce it anymore

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Helppppp..... evaluate 3^-3=
elixir [45]

ANSWER

The answer is

B

\frac{1}{27}

EXPLANATION

The given expression is

{3}^{ - 3}

Use the negative index property;

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

We apply this property to get:

{3}^{ - 3}  =  \frac{1}{ {3}^{3} }

This gives us:

{3}^{ - 3}  =  \frac{1}{3 \times 3 \times 3 }

{3}^{ - 3}  =  \frac{1}{27}

The correct option is B.

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3 years ago
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Help me please summer homework
vladimir1956 [14]
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2 years ago
What is the square root of 78
Pavel [41]
The square root of 78 is an irrational number, so the exact number
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3 years ago
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A student walked 100 meters north, then 100 meters west. how many more meters did the student walk compared to their total displ
seraphim [82]

Using Pythagorean theorem, the student walked 53.58 meters more compared to the total displacement from the starting point.

If a student walks 100 meters north, then 100 meters west, then the path he travels resembles the sides of a right triangle (see attached photo).

Using Pythagorean theorem, we can solve for the total displacement from the starting point to the end point.

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b is the distance he walks to the west

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Comparing the total distance the student walked and the total displacement from the starting point to the end point by subtraction.

100 meters + 100 meters - 141.42 meters = 53.58 meters

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4 0
1 year ago
Express 0.000041 in scientific notation
nydimaria [60]
Starting at 4 count to the left, there's 5 zero
so answer

<span>0.000041 = 4.1 x 10^-5</span>
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3 years ago
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