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3 years ago

Which expression represents "the sum of 5 and b divided by two

Mathematics

1 answer:

DIA [1.3K]3 years ago

5 0

Step-by-step explanation:

<u>Break down the word expression:</u>

The sum of 5 and b divided by two

the sum (+) of 5 and b (5 + b) divided by 2.

<u>Expression:</u>

$\frac{(b + 5)}{2}$

Parentheses represent that we need to add first, in order to divide the sum by 2.

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2. Flying to Kampala with a tailwind a plane averaged 158 km/h . On the return trip the plane only averaged 112 km/h while flyin

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Answer:

Speed of plane in still air = 135 km/h

Speed of wind = 23 km/h

Step-by-step explanation:

Given that:

Speed of plane with the wind = 158km/h

Speed of plane against the wind = 112km/h

Let,

x be the speed of plane

y be the speed of wind

According to given statement;

x+y = 158 Eqn 1

x-y = 112 Eqn 2

Adding Eqn 1 and 2

$x+y+x-y=158+112\\2x = 170\\\frac{2x}{2}=\frac{270}{2}\\x=135$

Putting x = 135 in Eqn 1

135+y = 158

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Hence,

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3 years ago

Find the median and mean of the data. Which reflects the best measure of the center?

Dmitry [639]

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Median: is when you find middle number in this set from low > high
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Mean = 16
Explanation:
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3 years ago

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