2 years ago

thirty randomly selected students took the calculus final. the sample mean was 76 and the standard deviation was 9.1.

1 answer:

8 0

Thirty randomly selected student took the calculus final and the sample mean was 76 and the standard deviation was 9.1 because i don’t really know but yeah

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I need help in these questions please !

timama [110]

Answer:

b,b.a

Step-by-step explanation:

6 0

2 years ago

the ages of John and Mary total 27 years. Mary's age plus twice john's age is 40. how old is each person?

son4ous [18]

So
Jon's age=j
mary age=m

m+j=27
m+2 times j=40
m+2j=40
M+j=27
ssubtract j from both sides
m=27-j
subsitute 27-j for m
27-j+2j=40
27+j=40
subtract 27 fromboth sdies
j=13

subsitue
13+m=27
subtract 13
m=14

mary=14
john=13

4 0

3 years ago

Read 2 more answers

Rewrite the expression x^3+10x^2+13x+39/x^2+2x+1 in the form q(x)+r(x)/b(x)

aleksley [76]

Hello :
here is a solution