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Softa [21]
2 years ago
13

25) 3 NaHCO3 Na H = C =_0 =

Mathematics
1 answer:
jeka57 [31]2 years ago
7 0
H=3. C=3 O= 9 the total is 18
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Solve each system by elimination.
max2010maxim [7]

Answer:

Step-by-step explanation:

-x-2y+4z=-14

x=-2y+4z+14

2x+2y+2z=-6

2x=-2y-2z-6

x= -y-z-3

-x-6z=-3

x=3-6z

8 0
3 years ago
In 12 games last season the school baseball team scored 5, 11, 2, 0, 4, 8, 9, 6, 7, 4, 1, and 2 runs. What is the average number
Mashcka [7]

Hello there!

First, we need to put our data set into proper numerical order (least to greatest).

Set: , 1,2,2,4,4,5,6,7,8,9,11

Now, to find the mean, we need to add them all up.

1 + 2 + 2 + 4 + 4 + 5 + 6 + 7 + 8 + 9 + 11 = 59

Then, divide it by how many numbers there are : 12

59 divided by 12 = 4.9166667

Round it to the nearest tenth.

4.9166667 = 4.9

This means the average number of runs scored per game is 4.9 runs.

7 0
3 years ago
What are the two numbers with the sum of 1
Yuri [45]

Step-by-step explanation:

0+1 = 1

1/2+1/2= 1

-50 + 51= 1

5 0
3 years ago
BRAINLIEST FOR CORRECT ANSWER: What is the area of this figure?
White raven [17]
The answer is 253 square feet
3 0
3 years ago
Read 2 more answers
A ladder is placed against a wall such that the top is 8 feet above the ground. If the ladder is 10 feet long, how far away from
Annette [7]

Answer:

6 feet

Step-by-step explanation:

Consider the right triangle formed by the wall, ladder and ground.

Let the distance the ladder is from the wall be d , then

Using Pythagoras' identity in the right triangle

The square on the hypotenuse ( ladder) is equal to the sum of the squares on the other 2 sides ( wall and d ), then

d² + 8² = 10²

d² + 64 = 100 ( subtract 64 from both sides )

d² = 36 ( take the square root of both sides )

d = \sqrt{36} = 6

That is the ladder is 6 feet away from the wall

7 0
3 years ago
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