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Sidana [21]
3 years ago
5

The radius, diameter, or circumference of a circle is given. Find the missing measures. Round to the nearest hundredth if necess

ary.
d = 19.4 cm, r = 2, C = 2
A. r = 38.8 cm, C = 30.47 cm
B. r = 9.7 cm, C = 60.95 cm
C. r = 9.7 cm, C = 30.47 cm
D. r = 38.8 cm, C = 60.95 cm
Mathematics
2 answers:
SCORPION-xisa [38]3 years ago
7 0

Answer:

C. r= 9.7 cm, C= 30.47 cm

Anvisha [2.4K]3 years ago
4 0

Answer:

B

r=9.7

C=60.95

Step-by-step explanation:

Given diameter of 19.4

r = d/2

19.4/2

r=9.7

C= 2(pi)r

2(pi)(9.7)

60.95 = C

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Arborists use the diameter of a tree trunk to predict the age of a tree. The following computer output and residual plot
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Answer:

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(x+3)^2=4
GalinKa [24]

Answer:

x = -1, -5

Step-by-step explanation:

{(x + 3)}^{2}  = 4 \\  =  >  {x}^{2}  + 2 \times x \times 3 +  {3}^{2}  = 4 \\  =  >  {x}^{2}  + 6x + 9 = 4 \\  =  >  {x}^{2}  + 6x = 4 - 9 \\  =  >  {x}^{2}  + 6x =  - 5 \\  =  >  {x}^{2}  + 6x  + 5 = 0 \\  =  >  {x}^{2}  + 5x + x + 5 = 0 \\  =  > x(x + 5) + 1(x + 5) = 0 \\  =  > (x + 1)(x + 5) \\  =  > x =  - 1 \:  \: or \:  \:  - 5

Hope it helps.

Don't forget to click the "Brainliest" button if you like my answer.

6 0
3 years ago
Read 2 more answers
The waiting time at an elevator is uniformly distributed between 30 and 200 seconds. what is the probability a rider must wait m
stira [4]
1.5 minutes = 90 second

The probability density function is

f_X(x)=\begin{cases}\dfrac1{200-30}=\dfrac1{170}&\text{for }30\le x\le200\\\\0&\text{otherwise}\end{cases}

so the probability of interest is

\mathbb P(X>90)=\displaystyle\int_{90}^\infty f_X(x)\,\mathrm dx
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5 0
3 years ago
Ella has a collection of vintage action figures that is worth $430. If the collection
valina [46]

The equation representing the value of the collection after 7 years is  value of collection = 430 + (0.04 * 430 )* 7 or value of collection = $550.4

<h3>What is an Equation ?</h3>

An equation is a mathematical statement , where the algebraic expression is equated to another algebraic expression.

It is given that

Ella has a collection of vintage action figures that is worth $430.

collection

appreciates at a rate of 4% per year

equation representing the value of the collection after 7 years is

value of collection = 430 + (0.04 * 430 )* t

value of collection = 430 + (0.04 * 430 )* 7

= $550.4

Therefore the equation representing the value of the collection after 7 years is  value of collection = 430 + (0.04 * 430 )* 7 or value of collection = $550.4

To know more about Equation

brainly.com/question/2263981

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