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krek1111 [17]
3 years ago
9

I need help with this ​

Mathematics
1 answer:
Jet001 [13]3 years ago
6 0

Answer:

it would be C.

Step-by-step explanation:

Solve the equation for  x  by finding  a ,  b , and  c  of the quadratic then applying the quadratic formula.

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Radius ob measures x units. which expression represents the circumference of the smaller circle with radius oa? (startfraction p
insens350 [35]

The circumference of the smaller circle is C =  2*pi*x/3.

We have given that radius ob measures x units

<h3>What is the formula for the circumference of the circle ?</h3>

circumference of the circle is given by,

C = 2\times \pi \times R

where pi = 3.14

R= radius

we have two circles, A and B, where B is the larger circle and A is the smaller circle.

We know that,The circumference of B is 3 times the circumference of A.

The radius of circle B is OB = x

The radius of circle A is OA

We want to find an expression of OA.

The circumference of circle B is given by

C(B) = 2\times \piOB = 2\times pi\times x

The circumference of circle A  is given by

C(A) = 2\times\pi\times OA

we know that the circumference of circle B is 3 times the circumference of circle A,

C(B) = 3\times C(A)

replacing the equations for the circumferences

2\times\pi\times x = 3\times (2\times pi\times OA)

We have divide both sides by 2\piwe get:

x = 3\times OA

Now we want to solve this for OA, then we need to isolate it,

x/3 = OA

We can conclude that the radius of the smaller circle is equal to x/3.

Then the circumference of circle A is

C(A) = 2\times pi\times x/3

To learn more about the circumference of the circle visit:

brainly.com/question/26491832

8 0
2 years ago
PLZ HELP WILL MARK BRAINLESY
melisa1 [442]
X= -27 hope this helps
8 0
3 years ago
The expression 27 + 45 as a product using the GCF and distributive property.
Bogdan [553]

Answer:

(a) By Greatest Common Factor:   (27 + 45 ) = 3( 9 + 15)

(b) By distributive property:   (27 + 45 )  = 9(3) +  9(5)

Step-by-step explanation:

Here, the given expression is 27 + 45 .

Now, by Prime Factorization:

27 = 3 x 3 x 3

45 = 3 x 3 x 5

Here, the 3 is the ONLY prime common factor.

So, the Greatest Common Factor = 3

⇒ (27 + 45 ) = 3( 9 + 15)

Hence, by  Greatest Common Factor:   (27 + 45 ) = 3( 9 + 15)

Now, by distributive property:

A( B + C)  = AB + AC

Here, in the given expression:

(27 + 45 ) = 9 ( 3 + 5)  = 9(3) +  9(5)

or, (27 + 45 )  = 9(3) +  9(5)

Hence, by distributive property:   (27 + 45 )  = 9(3) +  9(5)

5 0
3 years ago
A room decorator wants to purchase fabric. Each yard of fabric costs $2.90. Write a rule for the cost of the fabric. Let c equal
STatiana [176]
Expression: 2.90f = c
8 0
3 years ago
If the moon is approximately 3.63*10/8 meters from earth <br>what is 3.63*10/8 in standard Notation
disa [49]
Move the decimal to the right 8 places
8 0
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