3 years ago

Someone help me solve please !!

Mathematics

1 answer:

Tresset [83]3 years ago

3 0

Answer:

-2.9

Step-by-step explanation:

It's in the picture.

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Multiply to -260 add to 7

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What can you be more specific like a put it in a sentence. For example x*-260+7=?

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3 years ago

A floor is made up of 20 triangular tiles, each with sides 40 cm, 24 cm and 32 cm. Find the cost of polishing the floor at the r

pochemuha

Answer:

$15360\,\,rupees$

Step-by-step explanation:

Let sides of the triangle be $a,b,c$

$a=40\,,\,b=24\,,\,c=32$

Semi-perimeter (s) = $\frac{a+b+c}{2}$

$=\frac{40+24+32}{2}\\ =\frac{96}{2}\\=48$

Area of one tile $=\sqrt{s(s-a)(s-b)(s-c)}$

$=\sqrt{48(48-40)(48-24)(48-32)}\\ =\sqrt{48(8)(24)(16)}\\ =\sqrt{147456} \\=384\,\,cm^2$

So,

Area of 20 tiles $=20(384)=7680\,\,cm^2$

Cost of polishing the floor at the rate of 2 rupees per sq.cm = $7680(2)=15360\,\,rupees$

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3 years ago

You own a lawn care business. in a typical week you drive 600 miles and use 40 gallons of gasoline. gasoline costs $1.25 per gal

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3 years ago

The introductory biology class at State University is conducting a study of water quality in their local community. The populati

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Answer

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Step-by-step explanation:

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3 years ago

Find the missing angle measure.

spin [16.1K]

Answer:

x=83º

Step-by-step explanation:

The interior angle sum of a Hexagon is 720º

146+169+59+129+134+x=720

x=720-637

x=83

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3 years ago

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