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kotegsom [21]
4 years ago
13

–2 + (–9) Adding negative numbers

Mathematics
2 answers:
Tomtit [17]4 years ago
7 0
-11
Explanation: when adding to negative numbers together you add them like regular numbers just add a negative before the number like -2+(-4)=-6
yKpoI14uk [10]4 years ago
6 0

Answer:

-11

Step-by-step explanation:

adding two negative integers makes the answers negative too. when adding 2 negative integers, add them like normal addition and then put the negative sign.

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Find the measure of each interior angle
diamong [38]
\bf \textit{sum of all interior angles of a polygon}\\\\
180(n-2)\quad 
\begin{cases}
n=\textit{number of sides}\\
---------\\
n=10
\end{cases}\implies 180(10-2)\implies 1440\\\\
-------------------------------\\\\
\begin{array}{lclll}
&x + 5\\&x + 10\\&x + 20\\&x + 30\\&x + 35\\&x + 40\\&x + 60\\&x + 70\\&x + 80\\+&x + 90\\
&----\\
&10x+440
\end{array}\implies 
\begin{array}{llll}
10x+440=1440
\\\\\\
10x=1000
\\\\\\
x=\cfrac{1000}{10}\implies x=100
\end{array}

so.. to get every angle, simply plug in 10 for "x" for each.
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Part 2: Who wants to be brainliest? Say ME for a high chance to win!
quester [9]

Answer:

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Step-by-step explanation:

5 0
3 years ago
6x – 2y = 10 2x + 3y = 51 solving the first equation above for y gives:
Masja [62]
The first equation is 6x - 2y = 10. To solve for y, you will use inverse (opposite) operations to undo what is happening to y.  Please see the steps below for the work.

6x - 2y = 10
-6x          -6x
<u>-2y </u>= <u>(-6x + 10)</u>
-2            -2
y = 3x - 5
6 0
3 years ago
A box has a volume of 22 1/2 in³. Find the length of the box!
aliya0001 [1]

Answer:

Length = 2.823 in (to 3 decimal places)  

Step-by-step explanation:

assuming that the box is a cubic box:

volume of box = 22\frac{1}{2} in³ = 22.5 in³

volume = Length × Length × Length = (Length)³

∴ (Length)³ = 22.5

∴ Length = ∛(22.5)

using the calculator punch ∛(22.5), and the answer is:

∴ Length = 2.823 in (to 3 decimal places)

3 0
3 years ago
Mrs.Cats is making pancakes.She makes 30 pancakes to share equally amoug 5 people. How many pancakes does each person get?
OleMash [197]
6 pancakes per person
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3 years ago
Read 2 more answers
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