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Gelneren [198K]
3 years ago
7

What effect does blocking by gender have on the standard deviation of recumbent length for each​ gender?

Mathematics
1 answer:
jek_recluse [69]3 years ago
3 0
The standard deviation is lower for each group than it is for the groups combined.
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5.Solve the quadratic equation.
Dafna1 [17]

Answer:

x=5 twice

Step-by-step explanation:

x^2-10x+25=0

multiply the coefficient of x^2 and the last term

1X25=25

find two numbers you can multiply to get 25 and add to get -10

-5 + (-5)=-10 the middle term

replace -10x with -5x -5x and solve the equation

x^2-5x-5x+25=0

factorise by grouping

x(x-5)-5(x-5)=0

(x-5)(x-5)=0

Either x-5=0,x=5 or x-5=0,x=5

Therefore x=5 twice.

5 0
3 years ago
Which equation matches the graph of the greatest integer function given
QveST [7]
The answer is A. y = [x] -2
5 0
2 years ago
the alabama river is 729 miles. if 1 mile equals 1.61 kilometers, find the length of the river to the nearest whole kilometer. (
Gekata [30.6K]
1 times 729=729 so

1mile=1.61kiloneter
multiply both sides by 729 to get 729 miles on left side
729 miles=1173.69 kilometer

whole
1173.6
6>5 so round up
1174


answer is 1174 kilometer
4 0
3 years ago
Which drawing is a construction of a quadrilateral with one pair of parallel sides of lengths p and q? (second picture is A, thi
kenny6666 [7]
The 3rd illustration from the left would be your answer.. You can see the quadrilateral is a trapezoid having the one pair of parallel sides constructed.  
8 0
3 years ago
6x - 10y = -16<br><br> x + 20y = 19
Lena [83]
This may be the right answer: x=-1 y=-11/5
4 0
3 years ago
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