cadeysmarty
cadeysmarty cadeysmarty
  • 31-05-2018
  • Mathematics
contestada

the Times of sarah's first swim lengths are 27 seconds ,35 seconds ,and 31 seconds. in how many seconds must length four be completed so the mean is 30 seconds

Respuesta :

rasp3 rasp3
  • 31-05-2018
Length four must be 27 seconds.
Mean=x1,x2,x3,x4/n
30=27+35+31+x4/4
30*4=93+x4
X4=120-93=27
Answer Link

Otras preguntas

Please help i need it
If AC = 20 centimeters, and BC = 16 centimeters, which does AB equal?
The trend that involves the conversion from mechanical and analog devices to digital devices is commonly referred to as the​ ____________.
Step by step with this question?
When it came to weapons, the “fourteen points” plan called for??
What is the product 79.623 times 4.83??
Heights of men on a baseball team have a bell-shaped distribution with a mean of 167 cm and a standard deviation of 6 cm. Using the empirical rule, what is the
If 11,000 units are produced, what are the total amounts of direct manufacturing costs incurred to support this level of production?
the topic sentence states the main idea of a paragraph true or false
what is zero property product