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3 years ago

What is the answer ?

Mathematics

1 answer:

WINSTONCH [101]3 years ago

3 0

Ok, hopefully this is correct but bill is faster so Kevin is slower by ten because bill was going 110 at 2 hours which divided is 55 and Kevin was going 90 at 2 hours which is 45. Hope this helped! Have a great day :D

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a farmer sells 7.6 kg of apples and pears at the Farmers Market. Two-fifths of this weight is Apple's, and the rest is pairs. Ho

lutik1710 [3]

1/5 = 20% so... 2/5 = 40%
40% of 7.6 is 3.04
Subtract 3.04 from 7.6, you get 4.56

The farmer sells 4.56 kilograms of pears at the Farmers Market.

7 0

3 years ago

PUTTING MAX POINTS

svp [43]

Your answer would be everything but (D) .

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3 years ago

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A poll agency reports that 75% of teenagers aged 12-17 own smartphones. A random sample of 234 teenagers is drawn. Round your an

GalinKa [24]

Answer:

If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

$X \sim Binom(n=234, p=0.75)$

And the mean for this case would be:

$E(X) =np = 234*0.75= 175.5$

And the standard deviation would be given by:

$\sigma =\sqrt{np(1-p)}= \sqrt{234*0.75*(1-0.75)}= 6.624$

Step-by-step explanation:

If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

$X \sim Binom(n=234, p=0.75)$

And the mean for this case would be:

$E(X) =np = 234*0.75= 175.5$

And the standard deviation would be given by:

$\sigma =\sqrt{np(1-p)}= \sqrt{234*0.75*(1-0.75)}= 6.624$

3 0

3 years ago

How to solve 4y=x 3x- y=70 using substitution

creativ13 [48]

X = 4y
3x - y = 70

substitute the x in the second equation with the other half of the first equation.

3(4y) - y = 70
12y - y = 70
11y = 70
y = 6.36 repeating, or 6 4/11

now use this to solve first equation
x = 4 (6 4/11)
x = 25.45 repeating

done

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3 years ago

What set does negative 4 belong to

Alenkinab [10]

It belongs to integers

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3 years ago