3 years ago

What is 2.40 before a 30 percent discount

Mathematics

2 answers:

artcher [175]3 years ago

7 0

2.40 before a 30% discount is 0.72

Art [367]3 years ago

6 0

The answer is $3.12.

2.4 times 0.3 = 0.72. You take 2.4 and add 0.72 to it to get 3.12

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how far would a 4.0 cm tall object be located from a reflecting surface with a focal lenght that is equal to 5 cm if it is to cr

katrin [286]

Answer:

HERE IS YOUR ANSWER

Step-by-step explanation:

Use the mirror equation:

1/di + 1/do = 1/f

where di = -10 cm and f = +15 cm. (Note that di is negative if the image is virtual.)

Substitute and solve for do.

1/do + 1/(-10 cm) = 1/(15 cm)

1/do = 1/(15 cm) - 1/(-10 cm) = 5/(30 cm)

do = 6 cm

Hope it helps you

Regards,

Rachana

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3 years ago

Express the area of the entire rectangle.

Cloud [144]

Answer:

$\huge\boxed{A=x^2+12x+35}$

Step-by-step explanation:

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$A=lw$

l - length

w - width

We have

$l=x+7\\\\w=x+5$

Substitute:

$A=(x+7)(x+5)$

Use FOIL (a + b)(c + d) = ac + ad + bc + bd

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combine like terms

$A=x^2+(5x+7x)+35\\\\A=x^2+12x+35$

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3 years ago

PLEASE HELP!!! 40pts

mote1985 [20]

Answer:

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Step-by-step explanation:

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2 years ago

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If 1.0 J of work is done in raising a 38 g apple, how far is it lifted?

olga55 [171]

Answer:

h=2.69 m

Step-by-step explanation:

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1/0.3724=h

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2 years ago

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Answer:

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Step-by-step explanation:

Your total will be 62.90 so its by its self and you need to subtract 57.50 and divide by 62.90

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2 years ago