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2 years ago

The perimeter of a quadrant of a circle is 37.5 cm. Find the area of the circle. (in cm square)

Mathematics

1 answer:

Irina18 [472]2 years ago

4 0

Answer:

the answer isA≈111.91cm²

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Solve the rational equation. If an equation has no solution, so state.<br>x+6/x=-7

kupik [55]

Answer:

x=−1 or x=−6

Step-by-step explanation:

Multiply all terms by x and cancel:

xx+6=−7x

x2+6=−7x(Simplify both sides of the equation)

x2+6−−7x=−7x−−7x(Subtract -7x from both sides)

x2+7x+6=0

(x+1)(x+6)=0(Factor left side of equation)

x+1=0 or x+6=0(Set factors equal to 0)

x=−1 or x=−6

Check answers. (Plug them in to make sure they work.)

x=−1(Works in original equation)

x=−6(Works in original equation)

Check out this website where i got my info. <em>https://www.mathpapa.com/algebra-calculator.html</em>

3 0

3 years ago

ANSWERRRR QUICKKKK PLEASEEEE

Brums [2.3K]

Answer: sqrt(2)/2 which is choice D

======================================================

Explanation

(3pi/4) radians converts to 135 degrees after multiplying by the conversion factor (180/pi).

The angle 135 degrees is in quadrant 2. We subtract the angle 135 from 180 to find the reference angle

180-135 = 45

Then you can use a 45-45-90 triangle to determine that the ratio of opposite over hypotenuse is sqrt(2)/2

sine is positive in quadrant 2

------------

Alternatively, you can use a unit circle. Refer to the diagram below. In red, I've circled the angle 3pi/4 radians. The terminal point for this angle has a y coordinate of sqrt(2)/2

Recall that y = sin(theta).

6 0

3 years ago

List intercepts for 4x^2+9y^2=36

polet [3.4K]

X intercept = (-3, 0) (3, 0)
y int = (-2,0) (2,0)

5 0

2 years ago

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What is the rule input numbers are 17 18 _ 28_40

Lelu [443]

19 27 28 29 30 315 64 29 46 is the
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4 0

3 years ago

Solve for the variable 4/2 = 9/x<br> A x = 2/9 b x=4 C =4.5 D x= 18

Lesechka [4]

Answer:

$\frac{4}{2} = \frac{9}{x} \\$

perform cross multiplication:

$(4 \times x) = 9 \times 2 \\ 4x = 18 \\ → \: { \tt{x = 4.5}}$

5 0

2 years ago