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3 years ago

NEED HELP FAST PLZ!!!!!!!

Mathematics

1 answer:

finlep [7]3 years ago

5 0

Answer:

y = {-2, 6}

Step-by-step explanation:

The fastest help is afforded by a graphing calculator. It shows you the y-values at the points of intersection are -2 and +6.

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I need to know how to find the value of x

anzhelika [568]

x = 15°

The angle of a straight line is 180°.

37 + 9x + 8 = 180
9x + 45 = 180
9x = 135
x = 15°

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3 years ago

Classify the real numbers as rational or irritational numbers

Andre45 [30]

Answer:

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Step-by-step explanation:

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3 years ago

Find the length of the radius of the circle whose perimeter is xcm and the area is

Jobisdone [24]

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

$\bf x = \cfrac{x^2}{4\pi }\implies 4\pi x = x^2\implies \cfrac{4\pi x}{x}=x\implies \blacktriangleright 4\pi = x\blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{since the radius is}}{r = \cfrac{x}{2\pi }}\implies r =\cfrac{4\pi }{2\pi }\implies \blacktriangleright r = 2\blacktriangleleft$

6 0

3 years ago

Read 2 more answers

Anyone? please help asap i really want to finish this

Nesterboy [21]

Answer:

Question 3: $b \geq 2$

Question 4: $r < -5$

Question 5: $y \leq -6$

Step-by-step explanation:

Question 3:

$b + 2 \geq 4\\b + 2 -2 \geq 4 - 2\\b \geq 2\\$

Question 4:

$13 > 18 + r\\13 - 18 > 18 -18 + r\\\\-5 > r\\ r < -5$ sign flips when r switches sides

Question 5:

$3y \leq 2y - 6\\3y - 2y \leq 2y - 2y - 6\\\\y \leq - 6\\$

8 0

2 years ago

Two trapezoids have areas 54 CM squared and 24 CM squared find their ratio of similarity

Monica [59]

1.5 or 3/2
to find a similarity ratio the values have to be in length not in the area. take the square root of both and divide them to get the similarity ratio.
$\frac{ \sqrt{54} }{ \sqrt{24}} = 1.5 = \frac{3}{2}$

3 0

3 years ago