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3 years ago

Simplify the expression: 8^2-7(4+5) 4 1 -7 5

Mathematics

1 answer:

Marta_Voda [28]3 years ago

6 0

The answer is 1 i hope i helped you :)

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Which of the expressions is rational

miv72 [106K]

Answer:

the third one

Step-by-step explanation:

the square root of 25 is 5. 5+2 = 7.

this is a rational number (the set of all integers and fractions).

the other 2 portions contain at least one element that is not rational. and so the sum with such a number is not rational.

45 and 7 are no square numbers, and therefore the square root of these numbers contains a neverending chain of digits after the decimal point without having any repeating pattern. these are real numbers but not rational numbers.

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2 years ago

•<br> Evaluate 15 / (-3) + 5|1-21 / (-5)

katrin [286]

Answer:

Step-by-step explanation:

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4 years ago

(-5, 3), (2, 1) what is the slope of the line that passes through the points

lord [1]

Here is a photo of how to solve it

3 0

3 years ago

Help! math, ill give u 20 points

Pepsi [2]

10
is the range of it

4 0

3 years ago

Need help with these two question!!??

lawyer [7]

The measure of x in both parts is: 120°

Step-by-step explanation:

Part A:

We can clearly see that the figure in part a has six equal sides. So the given figure is a hexagon.

A hexagon has six equal sides in six equal interior angles.

Sum of interior angles of hexagon is 720°

So,

$Measure\ of\ one\ agnle=\frac{Sum\ of\ interior\ angles}{number\ of\ angles}\\=\frac{720}{6}\\=120$

Part B:

The figure is a Dodecagon with 12 sides.

The Dodecagon has 12 equal sides and angles.

The sum of internal angles of Dodecagon is 1440°

So,

$Measure\ of\ one\ angle=\frac{Sum\ of\ angles}{Number\ of\ angles}\\=\frac{1440}{12}\\=120$

The measure of x in both parts is: 120°

Keywords: Polygons, Hexagon

Learn more about polygons at:

#LearnwithBrainly

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3 years ago