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makkiz [27]
3 years ago
7

During summer, when the snow melts, the water level of the Yukon River increases. If the water level of the river increased by 7

2 centimeters in 8 days, what is the water level increase rate in centimeters per day?
A. 9 centimeters per day
B. 12 centimeters per day
C. 11 centimeters per day
D. 8 centimeters per day
Mathematics
2 answers:
maksim [4K]3 years ago
6 0
They answer to this is A just do 72/8 and u get 9
Alenkasestr [34]3 years ago
3 0

Answer:

A) 9cm/day

Step-by-step explanation:

72/8=9

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PLZZZZZZZZZ ANSWER 25 thanks
cluponka [151]
C would be your answer

6 0
3 years ago
Read 2 more answers
Mrs. Stern washed
bekas [8.4K]

Answer:

Mrs. Stern washed more

\frac{7}{20} laundry still needs to be washed.

Step-by-step explanation:

Total amount of laundry: \frac{20}{20}

\frac{20}{20} -\frac{2}{5}-\frac{1}{4} =

\frac{20}{20} - \frac{8}{20} -\frac{5}{20} =

\frac{7}{20} of the laundry still needs to be done.

Mrs. Stern washed \frac{8}{20} of the laundry.

Her son washed \frac{5}{20} of the laundry.

Mrs. Stern washed more laundry than her son.

8 0
3 years ago
Oregon State University is interested in determining the average amount of paper, in sheets, that is recycled each month. In pre
Juliette [100K]

Answer:

The test statistic is t = 2.79

Step-by-step explanation:

From the question we are told that

    The population mean is \mu   = 59.3

    The sample size is  n  =  79

    The  sample mean is  \= x  = 62.4

    The  standard deviation is  \sigma  =  9.86

Generally the test statistics is mathematically represented as

            t =  \frac{\= x - \mu }{ \frac{ \sigma}{ \sqrt{n} } }

substituting values

          t =  \frac{ 62.2 -  59.3 }{ \frac{  9.86}{ \sqrt{ 79} } }

          t = 2.79

4 0
4 years ago
Is the equation true false or open<br> (12+8)/-10=-12/6
kolbaska11 [484]
The equation is true 20/-10=-12/6 or -2=-2
8 0
3 years ago
Y is between x and z, xy = 13.8, xz =21.4. find YZ
Reil [10]

\bf \underset{{~\hspace{7em}XZ = 21.4}}{&#10;\stackrel{XY=13.8}{X\rule[0.35em]{17em}{0.25pt}Y}\rule[0.35em]{10em}{0.25pt}Z&#10;}&#10;\\\\\\&#10;XZ=XY+YZ\implies XZ-XY=YZ\implies 21.4-13.8=YZ\implies 7.6=YZ

4 0
3 years ago
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