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Reptile [31]
3 years ago
5

So sánh 198*202 và 200^2

Mathematics
1 answer:
Ber [7]3 years ago
5 0

Step-by-step explanation:

198×202=39,996

200×200=40,000

hence,

39,9996 < 40,000

hope it helps

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What is the answer negative one times the sum of one and seven times a number, decreased by 6 times the difference of negative s
Setler79 [48]

Answer:

The number is -79.

Step-by-step explanation:

Let's set up equation for the given information.

Let the number as 'x'

Negative 1 times the sum of one and seven times a number x could be written as -1(1+7 x).

Now, 6 times the difference of negative seven and a number could be written as

6(-7-x)

Now,

-1(1+7 x) decreased by 6(-7-x) equals 36

So, we can set up equation as

-1(1+7 x)-6(-7-x)=36

Solve the equation for x

-1-7 x-42+6 x=36

Combine like terms

-x-43 =36

Add both sides 43

-x=79

Divide both sides by -1.

x=79

5 0
3 years ago
Ms.Gartland bought x number of shirts for the new members of her chorus.The cost for x number of shirts,including $3.99 shipping
lorasvet [3.4K]

1

77.49 - 3.99 = $73.5

73.5 / 12.25 = 6 Shirts

6 0
3 years ago
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It takes 16 sections of carpet to cover 1 classroom floor. Tyler wants to know how many sections of carpet are needed for 6 clas
katovenus [111]
If 1 classroom uses 16 sections, then 6 classrooms would use :
6 * 16 = 96 sections

and 14 classrooms would use : 14 * 16 = 224 sections

4 0
4 years ago
The graph of a function f is shown below.<br> Find f (2)
liberstina [14]

Answer:  f(2) is 3.

Step-by-step explanation:

f(2) just means "what is the vale of the function, f, when x = 2?  Look for x=2 and read the y value where the line crosses x=2, in this case, the y value is 3.  So f(2) = 3.

======

[One could also determine the equation for the line.  Provided below.]  

The slope is -(1/2) and the y-intercept is 4:

y = -(1/2)x + 4

For x=2,

y = -(1/2)*(2) + 4

y = 3  

y(2) = 3  

4 0
3 years ago
Find the product using model or drawing
antiseptic1488 [7]

Fraction multiplication involves multiplying the numerators and the denominators to get the numerator and the denominator of the product respectively

Please find the attached diagrams

1. \dfrac{2}{15}, 2. \dfrac{3}{8}, 3. \dfrac{1}{12}, 4. \dfrac{7}{21}, 5. \dfrac{3}{10}

6. 51, 7. 1, 8. 22, 9. \dfrac{36}{55}, 10. 5\dfrac{1}{3}

Reasons:

The process of multiplication of factors using a model includes;

  • Creating a table that have the number of rows and columns equal to the values in the denominator of the two fractions respectively
  • Shading the number of columns given by the numerator of the fraction that has a denominator equal to the number of columns in the table
  • Shading the number of rows given by the numerator of the  fraction that has a denominator equal to the number of rows in the table
  • Ensuring that the common area are shaded to a different color
  • Simplifying the result

1. \dfrac{2}{3}   \times \dfrac{1}{5} = \dfrac{2}{15}  

2. \dfrac{1}{2}   \times \dfrac{3}{4} = \dfrac{3}{8}

3. \dfrac{1}{4}   \times \dfrac{2}{6} = \dfrac{2}{24} = \dfrac{1}{12}

4. \dfrac{1}{7}   \times \dfrac{2}{3} = \dfrac{7}{21}

5. \dfrac{4}{8}   \times \dfrac{3}{5} = \dfrac{12}{40} = \dfrac{3}{10}

Second part

6. When calculating fractions, 'of' means to 'multiply by', therefore, we have;

\dfrac{17}{25}   \times 75= \dfrac{17}{25}   \times 25 \times 3 = 17 \times 3 =  51

7. \dfrac{7}{6}   \times \dfrac{24}{28} = \dfrac{7}{6}   \times \dfrac{6 \times 4}{7 \times 4} = \dfrac{7}{6}   \times \dfrac{6}{7 }  = 1

8. 12   \times 1\dfrac{5}{6} =6 \times 2   \times \dfrac{11}{6} =2   \times {11} = 22

9. \dfrac{4}{5}   \times \dfrac{9}{11} = \dfrac{4 \times 9}{5 \times 11} = \dfrac{36}{55}

10. 6\dfrac{2}{3}     \times \dfrac{12}{15} =\dfrac{20}{3}  \times \dfrac{12}{15} = \dfrac{4 \times 5}{3}  \times \dfrac{4 \times 3}{5 \times 3} = \dfrac{4}{3}  \times {4} = \dfrac{16}{3} = 5\dfrac{1}{3}

Learn more here:

brainly.com/question/2752457

7 0
3 years ago
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