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3 years ago

9

Cedric and Insha solved the same equation using the calculations below.

1 answer:

Mariulka [41]3 years ago

3 0

The first working out is correct, z = 3

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A circle with a circumference of 51 inches to find the area

Kaylis [27]

$\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=51 \end{cases}\implies 51=2\pi r\implies \boxed{\cfrac{51}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \implies A=\pi \left( \cfrac{51}{2\pi } \right)^2\implies A=\cfrac{51^2}{2^2\pi }\implies A\approx 206.98$

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3 years ago

A man makes a profit of 15%6y selling an article for Rs 2500. For what price should he sellituto make a profit of 38%

dusya [7]

Find the price before the 15% profit:

2500 / 1.15 = 2173.91

Now multiply the original cost by 1 + 38%:

2173.91 x 1.38 = 2999.99

Answer: 2.999.99 ( may need to round to 3,000)

5 0

3 years ago

Please help me it is due soon, please no links

lora16 [44]

Answer:

The length of the three sides $5, \sqrt{58} , \sqrt{65}$

The triangle <u>is not</u> a right triangle

Step-by-step explanation:

A = (3, 2) , B = ( 6, 9) , C = (10, 6)

Find the lengths using distance formula.

$distance = \sqrt{(x_2 -x_1)^2 + (y_2 - y_1)^2}$

$AB = \sqrt{(6-3)^2 + (9-2)^2} = \sqrt{9 + 49 } = \sqrt{58}$

$BC = \sqrt{(10-6)^2 + (6-9)^2} = \sqrt{16 + 9} = \sqrt{25} = 5$

$AC = \sqrt{(3-10)^2+(2-6)^2} = \sqrt{49 + 16} = \sqrt{65}$

Using Pythagoras theorem :

$(Longer \ side)^2 = sum \ of \ square \ of \ two \ other \ sides$

Longest side is AC . So we will check if it satisfies Pythagoras theorem :

$\sqrt{65} = \sqrt{58} + 5^2\\65 = 58 + 25\\$

65 ≠ 58 + 25

So the sides does not satisfy Pythagoras theorem. Hence the triangle is not a right triangle.

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3 years ago

Determine the x-intercept of the line whose equation is given:

Rudiy27

Answer:

Green

Step-by-step explanation:

cause blue and red make orange :)

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3 years ago

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Help!!!! Will give brainliest

Natasha2012 [34]

Answer:

B= - 6/5

Step-by-step explanation:

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3 years ago

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