2 years ago

Write an expression that shows how to usethe halving and doubling strategy to find 8 x 50

Mathematics

1 answer:

faust18 [17]2 years ago

3 0

Double of 50 is 100, so 28*100=2800, now half of the answer is 2800/2=1400

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A rectangular swimming pool measures 50 meters in length and 25 meters in width.

GrogVix [38]

Answer:

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Step-by-step explanation:

1. the ratio is 1:5 so 50 metres in real life is 10 centimetres on paper so length = 10 cm

2. 25 metres in real life is 5 centimetres on paper so width = 5 cm

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2 years ago

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Phoenix [80]

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2 years ago

Find k, the constant of proportionality, for the data in this table. Then write an equation for the relationship.

VashaNatasha [74]

Answer:

$k=\frac{32}{5}$ , $y=\frac{32}{5}x$

$k=6.4$ , $y=6.4x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Find the value of the constant of proportionality k

take any ordered pair from the data

For x=25, y=160

$k=\frac{y}{x}$

substitute the values of x and y

$k=\frac{160}{25}$

simplify

$k=\frac{32}{5}$

The linear equation is equal to

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2 years ago

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allsm [11]

I think 40 is correct

5 0

2 years ago

Read 2 more answers