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Lubov Fominskaja [6]
2 years ago
13

Item 29 Divide. 6.8÷4 6.8÷4

Mathematics
1 answer:
Ket [755]2 years ago
7 0

Answer:

1.7

Step-by-step explanation:

You can just use a calculator to make the work easier.

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The faces of a triangular pyramid have a base of 5 cm and height of 11 cm. What is the lateral area of the pyramid?
horrorfan [7]
I think 55 because you would multiply 11×5
7 0
3 years ago
Someone help me with this table !!!!!!!
Artemon [7]

Answer:  The image of the completed table is shown below

In the completed table, we have the following values (left to right)

  • Row One: 30, 10, 40
  • Row Two: 15, 45, 60
  • Row Three: 45, 55, 100

==============================================

Explanation:

We're told that "40 people responded that they use mouthwash". That means we'll write "40" at the very end of the "use mouthwash" row. This represents the total number of people who use mouthwash, since we're underneath the "total" in that far right column.

Then we're further told that "Of the people who use mouthwash, 30 people use floss", so we'll write "30" in the first row, first column blank space. These are the people who both floss and use mouthwash. Because earlier we know 40 people use mouthwash overall, this leaves 40-30 = 10 people who use mouthwash, but they don't floss.

To summarize so far: In row 1, we have the following values from left to right: 30, 10, 40

The first two items of this row must add to the last item.

---------------------

Now onto row 2

Since 40 people use mouthwash, and 100 people were surveyed, this means that 100-40 = 60 people do not use mouthwash.  The value 60 goes at the very end of row 2. This represents another total.

Like earlier, the first two items must add to the last. So 40+60 = 100.

Now turn to the fact that "45 people responded that they don't floss and don't use mouthwash". This tells us that "45" will be in the "no mouthwash" row and "don't floss" column.

We have 60 people who don't use mouthwash, and 45 of those people also don't floss. Therefore, 60-45 = 15 people do floss but they don't use mouthwash. We'll write "15" in the second row, first column.

Along row 2, we have the following values: 15, 45, 60

----------------------

Row 3

For each column, add up the first two items to get the third one. This will lead to the totals along this bottom row.

  • Floss: 30+15 = 45
  • Don't Floss: 10+45 = 55 .... note how this matches up with the third piece of information your teacher provided

The third column is already done, but again we can see that 40+60 = 100.

Furthermore, the first two items of the third row add to 45+55 = 100 which helps confirm our answers.

The full completed table is shown below.

------------------------

To summarize, we are effectively just sorting the values given to us to write them into the table. Then we use a bit of algebraic detective work to find out what values are missing so we fill out the completed table.

7 0
2 years ago
I don't understand ÷ fractions
Reptile [31]
Ok. so, you have a fraction. lets say it is, 5/20. and the other, is. 2/5. flip the first one, and multiply. so your answer would be, 25/40. hope this helps.
7 0
3 years ago
What is the circumference of the circle? Show steps please!
Marina CMI [18]

Area = r^2 x PI

to find r take the square root of the area:

r = √100 = 10

The circumference of a circle is the diameter times PI.

The diameter is 2 times r = 2 x 10 = 20

The circumference = 20PI m

The answer is C.

5 0
3 years ago
A d-inch piece of steel is cut into three pieces so that the second piece is twice as long as the first piece, and the third pie
Rina8888 [55]

1) The equation that can be used to describe this situation is; a + 2a + 1 + 5a = d

2) The equation that can be used to describe this situation is; a = 2b + 800

<h3>How to solve Algebra Word Problems?</h3>

Length of original piece = d

length of first piece = a

The second piece is twice as long as the first piece. Thus;

Length of second piece = 2a

The third piece is one inch more than five times the length of the first piece. Thus;

Length of third piece = 1 + 5a

Thus, equation for total length is;

a + 2a + 1 + 5a = d

2) State A produced 800 million pounds of apples more than twice the amount of apples in State B.

If a represents the amount of apples grown in State A and b represents the amount of apples grown in State B, then we have;

a = 2b + 800

Read more about Algebra Word Problems at; brainly.com/question/4344214

#SPJ1

5 0
1 year ago
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