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bulgar [2K]
2 years ago
9

What is the average of -30 -15 -20 55

Mathematics
2 answers:
defon2 years ago
8 0

Answer:

-2.5

Step-by-step explanation:

-30 + (-15) + (-20) + 55 = -10. Then you divide it by how many numbers there are (4). Which equals - 2.5. If this is wrong, then round up to -3.

IRINA_888 [86]2 years ago
6 0

Answer:

{ \tt{ =  \frac{ (- 30) + ( - 15) + ( - 20) + 55}{4} }} \\  \\  = { \tt{ \frac{ - 10}{4} }} \\  \\  = { \tt{ -  \frac{5}{2} }}

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Is the multiplicative identity for rational number​
enot [183]

Answer:

The rational number 1 is the multiplicative identity for rational numbers.

Step-by-step explanation:

I hope this will help you buddy

3 0
3 years ago
24 swimmers are swimming in the pool. 9 of them are female. What fraction of swimmers are male?
Korolek [52]

Answer:

15/24 or 5/8

Step-by-step explanation:

Well 9 are female

The rest of the 24 has to be male so

24-9=15

15/24 or 5/8

7 0
3 years ago
What is 8.984 rounded to the nearest tens
sergiy2304 [10]
Since the number is 8 you round up so it's 9.0
5 0
3 years ago
PLEASE HELP WITH #14 AND #7 PLEASE A.S.A.P !!!
kodGreya [7K]

Answer:

7.) 16.7

Step-by-step explanation:

7). First you have to find the length of the line with the triangle that is at a 90 angle with the longest side of the triangle

Using the pythagrorem theorem a² + b² = c²

4² + b² = 5²

b² = 5² - 4²

b² = 25 - 16

b² = 9

√b² =√9

b = 3

next you do the same thing to find the missing segment of the longest side

3² + b² = 13²

b² = 169 - 9

b² = 160

b = √160 or  ≈ 12.7

12.7 + 4 = 16.7

so 16.7 is the length of that side


3 0
3 years ago
Answer???? Angle 1, and angle 2. I need help
REY [17]
M> 1 + m>2 = 90°
x-12 + 5x = 90°
6x - 12 = 90°
6x -12 +12 = 90°+12
6x = 102
6x/6 = 102/6
x = 17

m>1 = x-12
m>1 = 17-12
m>1 = 5

m>2 = 5x
m>2 = 5(17)
m>2 = 85
7 0
3 years ago
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