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2 years ago

The mean of 8 numbers is 4,6,4,7,(x),(x+1),8 and 2 is 5. Find x

Mathematics

1 answer:

arsen [322]2 years ago

5 0

Answer:

X=2.5

Step-by-step explanation:

4+6+4+7+X+(X+1)+8+2/8=5

31+X+(X+1)/8=5

40=31+X+(X+1)

9=X^2+X

X=2.5

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The number of calories burned at the gym is normally distributed with a mean of 425 and a standard deviation of 51. Find the Z-s

Galina-37 [17]

Answer:

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(a)

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2 years ago

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1 year ago

5. The mapping f: xax² + bx + c defined on the set of real numbers is such that f(0) = -4,f(1)-1 and/(-1)= -5. Find a, b and c.

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It looks like you're saying

$f(x) = ax^2 + bx + c$

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11 months ago

y varies jointly with w and x, inversely with z, and suppose y=360 when w =8,x=15, and z =3. Write the equation that models this

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<span>Y varies jointly with w and x, inversely with z
this means that
</span>y ∝ wx / z
in equation form
y = kwx / z
where k is the proportionality constant
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2 years ago

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The mean of 8 numbers is 4,6,4,7,(x),(x+1),8 and 2 is 5. Find x​

The mean of 8 numbers is 4,6,4,7,(x),(x+1),8 and 2 is 5. Find x