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3 years ago

What is 3 1/3 × (- 1/5)

Mathematics

2 answers:

Roman55 [17]3 years ago

8 0

The answer is -2/3 because you turn 3 1/3 into a improper fraction, 10/3, and then multiply that by -1/5 giving you the answer of -2/3.

andrey2020 [161]3 years ago

3 0

that is the answer to your question

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svetoff [14.1K]

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4 years ago

Help me get these please

IgorC [24]

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3 years ago

Using the two functions listed below, insert numbers in place of the letters a, b, c, and d so that f(x) and g(x) are inverses.

blondinia [14]

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4 years ago

Reduce the rate 100miles per 4 hours to its unit rate and write the miles portion of your answer in the space provided

Reika [66]

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3 years ago

Find the area of the figure with Heron’s formula

Anna11 [10]

Answer:

735 cm²

Step-by-step explanation:

The figure is a trapezium .The area of the triangle section can be calculated using the Heron's formula.

The other part of the figure will be a square of sides 21 cm by 21 cm

<u>Area of the square section</u>

Area = l²

Area = 21* 21 = 441 cm²

<u>Area of the triangle using Heron's formula</u>

Sides of the triangle are ;

a= 28 cm

c= 35 cm

b = 21 cm -----height of the trapezium

The Heron's formula is given as;

$A=\sqrt{s( s-a)(s-b )(s-c )}$

where s is half the perimeter of the triangle

Perimeter of the triangle is given as ;

P= 35 + 28 + 21 =84 cm

s= 84/2 = 42 cm

$A=\sqrt{42*(42-21 )*(42-35 )*(42-28 )} \\\\A=\sqrt{42*(21 )*(7 )*( 14)} \\\\A=\sqrt{86436} \\\\A=294\\\\$

Total area = 294 + 441 = 735 cm²

7 0

3 years ago