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kifflom [539]
4 years ago
15

What is the sum of -2+9=

Mathematics
2 answers:
Oksanka [162]4 years ago
8 0
Your answer will be 7 

-2+9 is the same as 9-2

hope this helps 
noname [10]4 years ago
4 0
Same signs add and keep different signs subtract keep the sign of the higher number then you'll be exact. (This is a song I learned to help me with problems like these, sing it to the rhythm of row row row your boat) Your answer would be positive 7.
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Jessie has some nickels, dimes, and quarters in her bank. The number of coins is 30. The expression 0.05n + 0.10d + 0.25q repres
goldfiish [28.3K]

Answer:

n = 12 nickels

d = 11 dimes

q = 7 quarters

Step-by-step explanation:

.05n + .1d + .25q = 3.45

n + d + q = 30

n = q + 5

n = 12

d = 11

q = 7

8 0
3 years ago
PLSSSSSS HELP MEeEeEeEe
LiRa [457]

Answer:

The Median is 5

Step-by-step explanation:

The median is the middle number in a set of data, when the data has been written in size order.

0 1 2 4 <u>5 5</u> 5 6 6 6

As there is an even number of data the median is the average of the middle two values.  As the middle 2 values are both 5, then the average of these is also 5.  Therefore, the median is 5.

To find the mean of the set of data, add all the values together then divide by the number of data values:

(0 + 1 + 2 + 4 + 5 + 5 + 5 + 6 + 6 + 6) ÷ 10 = 4

Therefore, the mean is 4.

The Median is a better measure of central tendency as extreme values (outliers) do not affect it.  From inspection of the dot plot, the majority of the data values are 5 and 6.  Therefore, the lower values *could* be outliers, so 5 is a more realistic measure of central tendency.

5 0
2 years ago
Which solid has a volume that is 3 times the volume of a cone with the same base and height?
miss Akunina [59]
A cylinder...

Vcylinder=hπr^2

Vcone=(hπr^2)/3

3*Vcone=Vcylinder
7 0
3 years ago
Tell whether the ordered pair (1,1) is a solution of the system of inequalities.
Dmitry [639]

Since 0 < y < 1.5, hence the coordinate (1,1) is a solution

<h3>A solution to the system of inequality</h3>

Given the following inequality expression

y>0

y< 2.5x - 1

Wee are to check if (1, 1) is a solution to the systen of equation

If x = 1

y < 2.5(1) - 1

Y < 2.5 - 1

y < 1.5

Since 0 < y < 1.5, hence the coordinate (1,1) is a solution

Learn more on inequality here: brainly.com/question/24372553

8 0
3 years ago
WHAT IS 7.5% OF 80? ROUND TO THE NEAREST HUNDRETH
miss Akunina [59]
7.5% = 7.5 /100 = 0.075

80 * 0.075 = 6  ← answer
4 0
4 years ago
Read 2 more answers
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