1 year ago

5a + 3b - 10 when a=4 and b=7

Mathematics

1 answer:

vfiekz [6]1 year ago

4 0

Answer:

Step-by-step explanation:

input into the equation:

$5*4 + 3*7 - 10 = 20 + 21 - 10 = 41 - 10 = 31$

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2. US$ 1.7135

Brrunno [24]

Answer:

1577.8 US dollars are received for 1127 UK pounds.

5669.5 UK pounds are received for US$7937.3.

Step-by-step explanation:

The questions are solved by proportions, using a rule of three.

How many US dollars are received for 1127 UK pounds?

1 UK pound = 1.4 US dollars

1127 UK pounds - x US dollars

Applying cross multiplication:

$x = 1127*1.4 = 1577.8$

1577.8 US dollars are received for 1127 UK pounds.

How many UK pounds are received for US$7937.3?

1 UK pound = 1.4 US dollars

x UK pounds - 7937.3 US dollars

$1.4x = 7937.3$

$x = \frac{7937.3}{1.4}$

$x = 5669.5
$

5669.5 UK pounds are received for US$7937.3.

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Lapatulllka [165]

Answer:

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old weight - decrease = new weight

decrease = weight * percent

decrease = 72 * .125 = 9 lbs

old weight - decrease = new weight

72 - 9 = new weight

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Answer:

$8 \times(2+15)$

Step-by-step explanation:

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