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amm1812
3 years ago
13

Help help help MARK BRAINLEST

Mathematics
1 answer:
sineoko [7]3 years ago
8 0

Answer:

x=18

Step-by-step explanation:

S=(n-2)180

S=(5-2)180

S=3x180

S=540

540=(9x-6)+(3x+23)+95+((7x-4)+90

540=19x+198

540-198=19x

342=19x

342/19=x

x=18

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If three times a number minus 2 equals 13, what is the number?
Nana76 [90]
Change the messy words into numerals
3     times          a number         minus            2           equals         13
3          ×                n                     -                 2               =               13

3n - 2 = 13
take 2 to the other side
3n - 2 + (2)  = 13 + (2)
3n = 15

Divide by 3 on either sides to isolate n
\frac{3n}{3} = \frac{15}{3}
3 and 3 cancels out

n = 5

check:
3 times 5 minus 2 equals 13
3     ×    5       -      2     =     13
15    -      2        =          13
13            =               13

The number is 5
3 0
4 years ago
Can you help me list 5hese from least to greatest
g100num [7]
Ok sweetheart, the easy way to solve these problems is to change them to all the same form for example "decimal" after that you sort them! just don't forget to remember which is which!!! so this is how you solve.

squared 25, 4.26, 3 1/5 2^3,2.58
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4 0
3 years ago
Missy bought 3 umbrellas and 5 hats 27.00. Each umbrella coats the same amount. Each has costs the same amount. The price of a h
slava [35]
$4.00 is my answer.

3x + 5(3) = 27
3x = 27 - 15
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x = 12÷3
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6 0
4 years ago
Estimate the value of<br>9304 ÷93 =​
LuckyWell [14K]

Answer:

100

Step-by-step explanation:

Round 9304 to 9300. 9300/93 is just 100 since 100 * 93 = 9300 (this is something easily recognizable).

6 0
3 years ago
How many ounces are in 8lb and 3 ounces
valentinak56 [21]
Hi there!

Simple conversion will greatly help us here. Below I'll list some common conversions for pounds and ounces.

16 ounces = 1 pound
32 ounces = 2 pounds

These will greatly aid us in finding how many ounces are in 3lb and 3 ounces. If we know that 2 pounds = 32 ounces then we know that by multiplying that by 4 we'll get how many ounces 8lb is.

32 ounces * 4 = 128 ounces.

However, we're not done there! There are also a leftover 3 ounces meaning once we add that to our 128 ounces we'll get our final answer.

3 ounces + 128 ounces = 8lb and 3 ounces.
131 ounces = 8lb and 3 ounces.

And that's our final answer. :)
7 0
4 years ago
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