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Dmitrij [34]
3 years ago
11

Jodi and mariah are sisters. jodi is three years older than mariah. using one variable, write an expression to represent the sum

of their ages. make sure to explain what your variable represents.
Mathematics
1 answer:
lapo4ka [179]3 years ago
7 0
Mariah =X
Jodi= X+3

X+X+3= 2X+3
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After a birthday only 1/4 cake ramains what fraction is equivalent 1/4
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2/8, 3/12, 4/24, 5/20, 6/24, 7/28, 8/32, 9/36, 10/40, etc.

Step-by-step explanation:

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945 round nearest ten
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945 rounded to the nearest ten is 950
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Approximately what percentage of U.S. national income is paid to workers, as opposed to owners of capital and land? Select one:
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Step-by-step explanation:

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3 years ago
I need help on math.<br>h(x)=8x-10<br>h( )=62
andriy [413]

Simplifying

8x + -10 = 62


Reorder the terms:

-10 + 8x = 62


Solving

-10 + 8x = 62


Solving for variable 'x'.


Move all terms containing x to the left, all other terms to the right.


Add '10' to each side of the equation.

-10 + 10 + 8x = 62 + 10


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3 0
3 years ago
Karen measures the width of a garden plot and records that it is 44.25 meters. Its actual width is 45.5 meters.
vazorg [7]

Answer

Find out the what is the percent error in the measurement, to the nearest tenth of a percent .  

To prove

Formula

Percentage\ error = \frac{error\times 100}{exact}

Where error = | Approx - Exact |

As given

Karen measures the width of a garden plot and records that it is 44.25 meters. Its actual width is 45.5 meters.

Approx value = 44.25 meters    

Actual value = 45.5 meters        

error = | 44.25 - 45.5 |

         = |-1.25|

         = 1.25

Put in the formula

Percentage\ error = \frac{1.25\times 100}{45.5}

Percentage\ error = \frac{125}{45.5}

Percentage error = 2.7%

Therefore the percentage error is 2.7% .




3 0
3 years ago
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