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3 years ago

Simplify 4+3(7+4*2) - 100

Mathematics

1 answer:

bazaltina [42]3 years ago

6 0

Answer:

4+3(7+4*2) - 100 = -51

Step-by-step explanation:

4+3(7+4*2) - 100

= 4 + 3 (15) - 100

= 4 + 45 - 100

= -51

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Answer:

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Step-by-step explanation:

cot q = x/y

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2 years ago

−5x+2y=9 y=7x what is x and y

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{x,y}={1,7}

Step-by-step explanation:

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2 years ago

By what percent will a fraction change if its numerator is decreased by 20% and its denominator is decreased by 60%?

Vedmedyk [2.9K]

Answer:

The fraction will increase by 100%

Step-by-step explanation:

Say the fraction is x/y. The question is telling us to decrease x by 20% (i.e. 0.8x) and to decrease y by 60% (i.e. 0.4y):

$= \frac{0.8x}{0.4y}\\= 2 (\frac {x}{y})$

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2 years ago

Read 2 more answers

The diagram shows a sector of a circle radius 10cm

Yuki888 [10]

Answer:

$\text{Perimeter of sector = 43.6 (Rounded to the nearest tenth.)}$

Step-by-step explanation:

$\text{Perimeter of the sector = Radius + arc length + radius}$

$\text{Radius = 10 cm}$

$\text{Perimeter of the sector = 10 + arc length + 10 }$

$\text{Perimeter of the sector = 20 + arc length }$

$\text{arc length = (sector angle/ 360 ) * perimeter of the circle}$

$\text{Perimeter of a circle }=2\pi r$

$\text{sector angle} = 135$

$\text{arc length} = (135/ 360 ) * 2\pi (10)$

$= (3/8) 20\pi$

$= 15\pi /2$

$\text{Using }\pi =3.14$

$= 15 * 3.14 /2$

$= 23.55$

$\text{Perimeter of the sector = 20 + 23.55}$

$= 43.55$

$= 43.6 cm$

$\text{perimeter of the sector = 43.6 cm }$

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2 years ago

Hari borrowed Rs. 126000 from a money-lender at 15% per annum simple interest,

amid [387]

Answer:

Rs. 112000

Step-by-step explanation:

Borrowed money = Rs. 126000
Interest rate = 15% PA simple
Time = 3 years

Hari is due to pay after 3 years:

126000* (1+ 3*15/100) = 182700

He pays Rs. 70700, remaining money is cleared by giving buffalo.

Cost of buffalo:

182700 - 70700= Rs. 112000

Answer is: Rs. 112000

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3 years ago

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Simplify 4+3(7+4*2) - 100​

Simplify 4+3(7+4*2) - 100