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2 years ago

Can you find the area in Circumference of a circle given the radius or diameter

Mathematics

1 answer:

Leokris [45]2 years ago

4 0

Circumference = 2 π r
r is radius
And the radius is half the diameter

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Translating words into algebraic symbols

shutvik [7]

Answer:

x-70

Step-by-step explanation:

3 0

2 years ago

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E 7 cm Find the value of x to 3 significant figures. x 12 cm 8 cm

kvasek [131]

Answer:

12.0 to 3 dig digs You must include the 0 to get 3 significant figures.

Step-by-step explanation:

Comment

This is a Pythagorean Problem. Use the formula

c ^2 = a^2 + b^2

Givens

a = 8 - 7 = 1 cm

b = 12 cm

c = ?

solution

c^2 = 1^2 + 12^2

c^2 = 1 + 144

c^2 = 145 Take the square root of both sides

√c^2 = √145

c = 12.04

c = 12.0 to 3 sig digs.

3 0

2 years ago

Kelly ran 6.2 miles Monday, 10.95 miles Wednesday, and 8.25 miles on Thursday. How many miles did she run in all?

RUDIKE [14]

Answer:

25.4 miles

Step-by-step explanation:

added them all up

but if i just wants miles than tha answer is 25

3 0

3 years ago

I NEED URGENT ASSISTANCE

Nata [24]

Answer:

8 C sometimes

9 64x^8 y^11

10 c 1.28r^2/ t^9

Step-by-step explanation:

Algebraic Operations

Some basic rules must be fresh in our minds when trying to simplify complex algebraic expressions. For example, the power rule respect to the product or quotient:

$\displaystyle \left(\frac{x^n.y^m}{z^p}\right)^q= \frac{x^{qn}.y^{qm}}{z^{qp}}$

$\displaystyle \frac{x^n.x^q}{x^p}= x^{n+q-p}$

$\displaystyle x^{-n}=\frac{1}{x^n}$

Let's face the questions at hand

8. A number is raised to a negative exponent is negative?

Following the expressions recalled above, let's pick the expression

$\displaystyle 3^{-2}=\frac{1}{3^2}=\frac{1}{9}$

This is a negative power resulting in a positive number

Now we pick

$\displaystyle (-2)^{-3}=\frac{1}{(-2)^3}=-\frac{1}{8}$

This time, the negative power leads to a negative result, so it doesn't matter the sign of exponent to determine the sign of the result

Answer: C sometimes

9 simplify(4xy^2)^3(xy)^5

$(4xy^2)^3(xy)^5=4^3x^3(y^2)^3x^5y^5$

$=64x^3y^6x^5y^5$

$=64x^8y^{11}$

10 simplify(2t^-3)^3(0.4r)^2

$(2t^{-3})^3(0.4r)^2=2^3(t^{-3})^30.4^2r^2$

$=8t^{-9} 0.16 r^2$

$=1.28t^{-9} r^2$

$\displaystyle \frac{1.28 r^2}{t^9}$

7 0

3 years ago

Solve the equation 6n -5 + 5n = 15 + n -4 + 8n

timurjin [86]

Answer:

if your solving for n.....

Step-by-step explanation:

n=3

7 0

2 years ago

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