The mean of 2,3,4,5,6,7,y is 10. then the value of y is.

Answers

Answer 1

Answer:

43

Step-by-step explanation:

to find mean we add all the terms together and them divide by the amount of terms so lets add what we know first

2+3+4+5+6+7

27

there are 7 terms including the y so for there to be a mean of 10 the terms will have to equal 70 when added so we just subtract

70-27

43

hopes this helps please mark brainliest


Related Questions

NEED HELP FAST
question is in the picture attached

Answers

Answer:

x=12.99

h=7.5

Step-by-step explanation:

we us cosine rule first to look for OB

the triangle OCB is an isosceles triangle whereby angleOCB=120,angleCOB=angleCBO=30

thus length of BC is 15

[tex]cosine \: rule \\ a {}^{2} = b {}^{2} + c {}^{2} - 2bc \cos(a) [/tex]

=(15^2+15^2)-(2×15×15×cos 120)

=450-(-225)

a^2 =675

a=25.98=OB

finding x

x=15sin 60

=12.99

finding h

h=15sin 30

=7.5

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