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2 years ago

6

Help me please I am begging y’all

1 answer:

cupoosta [38]2 years ago

7 0

2 is the answer i think

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Find the surface area of the figure below. Leave answer in terms of π.

Artyom0805 [142]

The answer is D, 1000pi
Use SA=2πrh+2πr^2.
Plug in the numbers A=2π*10*40+2*π*10^2.
and you get <span>3141.59.
divide by Pi and you get 1000</span>

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3 years ago

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PLEASE HELP! I REALLY NEED IT

wolverine [178]

I can’t really help you I’m sorry I don’t really know the answer but I do need points thank you byeAdios

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2 years ago

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Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary.

Rama09 [41]

Check the picture below.

now, we have a triangle with all three sides, thus we can use Heron's Area Formula on the triangle.

$\bf \qquad \textit{Heron's area formula} \\\\ A=\sqrt{s(s-a)(s-b)(s-c)}\qquad \begin{cases} s=\frac{a+b+c}{2}\\[-0.5em] \hrulefill\\ a=10\\ b=26.695\\ c=22\\ s=29.3475 \end{cases} \\\\\\ A=\sqrt{29.3475(29.3475-10)(29.3475-26.695)(29.3475-22)} \\\\\\ A=\sqrt{29.3475(19.3475)(2.6525)(7.3475)}\implies A\approx \sqrt{11066.007} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill A\approx 105.195~\hfill$

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3 years ago

If 60 newspapers cost $27, find the cost of 16

Tju [1.3M]

16 newspapers cost $7.20

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3 years ago

Find the points where the line y = x - 1 intersects the circle x2 + y2 = 13

nata0808 [166]

Answer:

(-2,-3) and (3,2)

Step-by-step explanation:

sub in x-1 into y

x^2 + (x-1)^2 = 13

x^2 + (x-1)(x-1)=13

x^2 + x^2 -2x +1 = 13

2x^2 -2x-12=0

solve for x by factoring (quadratic formula, product sum etc..)

x= -2 and 3

plug in those values into y=x-1 and solve for y

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3 years ago

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