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kari74 [83]
3 years ago
13

Please tell me the answer! I'm crying in confusion! :(

Mathematics
2 answers:
Natalka [10]3 years ago
8 0
Find the common denominator:

3   6   9
--  --   --  
7  14  21

1  2  3  4  5  6      7     8
--  -- -- -- -- -- --   ---    ---
3  6  9  12  15    18    21

Ok, so we know the common demonators are 9/21 and 8/21

Now we subtract  9/21 and 8/21 which is 1/21 

So.. There is 1/21 pizza left!

Hope this helped :))

Inessa [10]3 years ago
6 0
First, change the fractions to a common denominator, which is 21. 

so 3/7 * 3/3  = 9/21

1/3 * 7/7 = 7/21

Add the two together

9/21 + 7/21 = 16/21

Then take 21/21 - 16/21 = 5/21

There is 5/21 of the pizza left.
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3 years ago
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What number is 1/10 great as 7962
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5 0
3 years ago
The number of views on an interesting video after it's uploaded is represented by the following table:
defon

Answer:

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data is ,V(t)=50(6.25)^t

Step-by-step explanation:

Time (months)         Views

0                                  50

2                                  313

4                                  1950

6                                  12,210

8                                  76,300

10                                 476,800

(x_1,y_1)=(0,50)\\(x_2,y_2)=(2,313)\\(x_3,y_3)=(4,1950)

Slope = \frac{y_2-y_1}{x_2-x_1}

Slope = \frac{313-50}{2-0}

Slope =131.5

Slope = \frac{y_3-y_2}{x_3-x_2}

Slope = \frac{1950-313}{4-2}

Slope =818.5

Since the slope is not same . So, it is not a linear relationship

\frac{y_2}{y_1}=\frac{313}{50}=6.25\\\frac{y_3}{y_2}=\frac{1950}{313}=6.25

Since the ratio between the consecutive outputs is same so, it is exponential relationship.

Formula : y=ab^t

Where a is the initial value = 50

b = rate of change = 6.25

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data

So,V(t)=50(6.25)^t

5 0
2 years ago
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