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3 years ago

What is the area of a circle with a diameter of 4x - 24? Specifically what steps would you take?

Mathematics

2 answers:

Natalija [7]3 years ago

5 0

Answer:

Step-by-step explanation:

The formula for the area of a circle is

A = πr². We need the radius, r, to calculate the circle.

If the diameter of the circle is 4x - 24, then the radius is half that, or

2x - 12.

Then the area of the circle in question is A = πr², or

A = π(2x -12)²

If desired, this could be expanded:

A = π(4)(x - 6)² = 4π(x^2 -12x + 36)

Marina CMI [18]3 years ago

4 0

Answer:

12.56x^2+452.16

Step-by-step explanation:

A=pie r^2

(4x-24)/2= 2x-12 which is your radius

(2x-12)^2=4x^2+144

Pie=3.14ish

3.14(4x^2+144)

12.56x^2+452.16

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Maria earns $80 per day working at a gas station. Write an algebraic expression to represent the amount of money she will earn i

Simora [160]

Answer:

The algebraic expression is 80d

Step-by-step explanation:

Maria's earnings per day = $80

Number of days= d

Total earnings for d days:

80d

Where,

80 is earnings per day

d is number of days

The algebraic expression is 80d

Algebraic equation is

y= 80d

Where

y= total income earned in d days

The expression is different from am equation because of the equal to sign(=)

3 0

3 years ago

PLEASE HELPPP!!!!!! Write an equation of the line passing through point P that is perpendicular to the given line.

ArbitrLikvidat [17]

Answer:(d): y=ax+b (a≠0); (d1)y=-4x+13

because of (d)⊥(d1) --> a.(-4)=-1 --> a= $\frac{1}{4}$

(d): y= $\frac{1}{4}x$ +b. (d) pass through P(-1;-2) so we have

-2=(1/4).(-1)+b ---> b= $\frac{-7}{4}$

(d) y= $\frac{1}{4}x+ \frac{-7}{4}$

4 0

3 years ago

Quick please , find the volume of the shape

Blizzard [7]

Answer:

7068.58 Cubic inch

Step-by-step explanation:

$V=\frac{2}{3} \pi r^{3} =\frac{2}{3} \pi 15^{3}=7068.58 in^{3}$

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3 years ago

What is the sum of 4.5 × 10^8 and 8.9 × 10^8?

Andrei [34K]

Answer:

i think that the correct answer is a

Step-by-step explanation:

4 0

3 years ago

I need help with this

Sliva [168]

1) 36
2) 10
3) 68
4)42
5) 24

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3 years ago