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igomit [66]
3 years ago
5

The elevation of your plot of land is 2 feet below sea level. You add 7 feet of dirt to your land. What is the new elevation of

your land?
Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
7 0

Answer: 5

Step-by-step explanation: -2+7=5

when the signs are different you subtract and when the signs are the same you add. Then you keep the sign of the bigger number.

Ludmilka [50]3 years ago
6 0
The answer would be nine because you start at 2 and add 7
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Does 2x+4=3x+1/2 have one solution or more or none?
Contact [7]

Answer:

one solution the solution being ×=7/2

Step-by-step explanation:

one solution

3 0
3 years ago
If 3/7m = 7/3n, then what is the value of m/n ?
Gwar [14]

49/9=m/n this is because you multiply by the reciprocal of 3/7

6 0
3 years ago
Following are heights, in inches, for a sample of college basketball players. 78 83 82 78 78 80 81 79 79 83 77 78 84 82 80 80 82
blagie [28]

The mean height of the basketball players is 80.3 inches

For given question,

we have been given the list of heights, in inches, for a sample of college basketball players.

We need to find the mean height of the basketball players.

We know that, for given sample of data

mean = sum of all observations ÷ total number of observation

First we find the sum of given heights.

78 + 83 + 82 + 78 + 78 + 80+ 81 +79+ 79 +83+ 77 +78+ 84+ 82+ 80+ 80 +82+ 84+78+ 80 = 1606

Total number of observations = 20

Using the formula of mean,

⇒ mean height = 1606/20

⇒ mean height = 80.3 inches

Therefore, the mean height of the basketball players is 80.3 inches

Learn more about the mean here:

brainly.com/question/6813742

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3 0
1 year ago
5x + 6y = 20 , 8x - 6y = -46
serg [7]

Answer:

5x + 6y = 20_____(1)

8x - 6y = -46_____(2)

Solving simultaneously:

Eqn(1) + Eqn(2)

5x + 8x + 6y + (-6y) = 20 + (-46)

13x = -26

x = -2

substituting this into Eqn (1):

5(-2) + 6y = 20

-10 + 6y = 20

6y = 30

y = 5

hence:

x = -2,y = 5.

7 0
3 years ago
Solve and graph the inequalities<br> 100x-200&gt;50x-75
amid [387]
100x - 200 > 50x - 75

100x - 50x > -75 + 200

50x > 125

x > 2,5

Good Luck
5 0
3 years ago
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