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2 years ago

If a number is negative, then its opposite will be:

Mathematics

1 answer:

Arturiano [62]2 years ago

7 0

Answer:

the opposite of a negative number is positive.

Step-by-step explanation:

Negative numbers are numbers that are less than 0. The opposite of a positive number is negative, and the opposite of a negative number is positive. Since the opposite of 0 is 0 (which is neither positive nor negative), then 0 = 0.

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The measure of one angle of an octagon is two times smaller that of the other seven angles. What is the measure of each angle?

Anestetic [448]

Answer:

7 of the angles measure 144 degrees each and one angle measures 72 degrees

Step-by-step explanation:

Let

x -----> represent the measures of the seven same-size angles,

x/2 ----> represent the measure of the one that is "two times smaller."

we know that

The sum of internal angles of a polygon can be calculated as:

$S=180^o(n-2)$

where

n is the number of sides of the polygon

In this case

n=8 (octagon)

substitute

$S=180^o(8-2)=1,080^o$

The linear equation that represent this problem is

$\frac{x}{2}+7x=1,080$

solve for x

$\frac{15x}{2}=1,080\\\\15x=2,160\\\\x=144^o$

$\frac{x}{2}=72^o$

therefore

7 of the angles measure 144 degrees each and one angle measures 72 degrees

7 0

2 years ago

Rewrite as a simplified fraction.<br>2.3 = ?

zubka84 [21]

Answer:

23/100 or 23/10

Step-by-step explanation:

2.3/1

(2.3 x 10) / (1 x 10) =23/10

find lcm (lowest common multiple) for 23 and 10

1 is the lcm for 23 and 10

23/10 is a simplest fraction for the decimal point number 2.3

7 0

2 years ago

What is the square root of -1?

Dimas [21]

Answer:

there isn't an answer, you can't get the square root of negative numbers. the sqaure root of a negative number does not exist in the set of Real Numbers

4 0

1 year ago

There are 15 apples but 1.3 we’re ate how many are left

Nikolay [14]

Answer:

not completely sure but I think it's it's 13.4

8 0

2 years ago

Solve the equation for x. <br><br> x-17=-5

soldier1979 [14.2K]

Answer: 12

Explanation:

add 17 to both sides

x = -5 + 17 = 12

6 0

2 years ago

Read 2 more answers

If a number is negative, then its opposite will be:​

If a number is negative, then its opposite will be: