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2 years ago

Work out the area of this circle.

Mathematics

2 answers:

Over [174]2 years ago

6 0

<h2><u>Given</u> :</h2>

Radius of circle - 6mm

Area of circle

<h2><u>Formula Using</u> : </h2>

Area of circle = πr²

<h2><u>Solution</u> :</h2>

Area of circle = π(6mm)²

Area of circle = 36π mm²

Hence, the area of circle is 36π mm²

exis [7]2 years ago

3 0

We know that

Area of circle = πr²

=> π × (6)²

=> π × 36

=> 36π mm²

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yan [13]

Answer:

$y=-\dfrac{1}{2}(x+4)^2-1$

Step-by-step explanation:

Vertex form: $y=a(x-h)^2+k$

where:

$(h, k)$ is the vertex
$a$ is some constant

Given:

vertex = (-4, -1)
point on parabola = (-2, -3)

Substitute given values into the formula to find $a$ :

$\implies -3=a((-2)-(-4))^2+(-1)$

$\implies -3=a(2)^2-1$

$\implies -3=4a-1$

$\implies -2=4a$

$\implies a=-\dfrac{2}{4}=-\dfrac{1}{2}$

Therefore, the equation of the parabola is:

$y=-\dfrac{1}{2}(x+4)^2-1$

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1 year ago

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zhenek [66]

Answer:

$9x - 7x + 10 = 18 \\ x(9 - 7) = 18 - 10 \\ 2x = 8 \\ x = \frac{8}{2} \\ \\ { \boxed{ \boxed{x = 4}}}$

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2 years ago

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PLS HELP ASAP NEED FOR A TEST

horrorfan [7]

Answer:

The answer in the procedure

Step-by-step explanation:

Let

x----> the first number

y----> the second number

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$\frac{x}{y}=\frac{3}{4}$

$y=\frac{4}{3}x$ -----> equation A

$x+y=35$ ----> equation B

substitute equation A in equation B

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$\frac{3x+4x}{3}=35$

$\frac{7}{3}x=35$

$x=35*3/7=15$

$y=35-15=20$

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2 years ago

Rewrite the definition “Perpendicular lines form right angles” as a biconditional statement using “if and only if”

vovangra [49]

Well, to write the definition of "Perpendicular lines form right angel" using "if and only if". the sentence would become :
<em>
</em><em>Two lines are perpendicular if and only if they form a right angle
</em><em>
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2 years ago

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Express p as the subject of the formula<br>q= p² - r ÷ t

Rudik [331]

Answer:

p = $\sqrt{q +\frac{r}{t} }$

Step-by-step explanation:

q= $p^{2}$ - r÷ t using BODMAS

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