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3 years ago

ASAP ! The radius of a circle is 5 inches. What is the length of a 70° arc?

Mathematics

1 answer:

saveliy_v [14]3 years ago

5 0

Answer:

7.29 inches

Step-by-step explanation:

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Original price:30 End price:45

oksian1 [2.3K]

Profit=15

Because-

45-30=15

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3 years ago

Help the question says "Solve -2b – 12 = 22" and the answers are

zmey [24]

Answer:

b = -17

Plug it in to find maybe correct answer if not sure next time.

3 0

3 years ago

Read 2 more answers

Helppppppppppppppppppp and answer fastttt where would I graph it

love history [14]

Answer:put a pt on the y on -2 then go down 3 and 2 right put another pt

Then from first pt go up 3 and 2 left

Now you have 3 pts look at picture

Step-by-step explanation:

4 0

3 years ago

It took the Selby family hours round -trip to drive from their house to their beach house 154 miles away . Find their average sp

seropon [69]

Step-by-step explanation:

Distance = 154 miles .

Time = 5 ½ hrs .

We know ,

Speed = s / t

v = 154 mi/ 5.5 hrs = 28 mi / hr

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2 years ago

From experience, it is known that on average 10% of welds performed by a particular welder are defective. if this welder is requ

bulgar [2K]

Binomial distribution can be used because the situation satisfies all the following conditions:1. Number of trials is known and remains constant (n)2. Each trial is Bernoulli (i.e. exactly two possible outcomes) (success/failure)3. Probability is known and remains constant throughout the trials (p)4. All trials are random and independent of the othersThe number of successes, x, is then given by $P(x)=C(n,x)p^x(1-p)^{n-x}$ where $C(n,x)=\frac{n!}{x!(n-x)!}$
Here we're given
p=0.10 [ success = defective ]
n=3

(a) x=0
$P(x)=C(n,x)p^x(1-p)^{n-x}$
$=C(3,0)0.1^0(1-0.1)^{3-0}$
$=1(1)(0.729)$
$=0.729$

(b) x=2
$P(x)=C(n,x)p^x(1-p)^{n-x}$
$=C(3,2)0.1^2(1-0.1)^{3-2}$
$=3(0.01)(0.9)$
$=0.027$

(c) x ≥ 2
$P(x)=\sum_{x=2}^3C(n,x)p^x(1-p)^{n-x}$
$=P(2)+P(3)$
$=C(n,2)p^2(1-p)^{n-2}+C(n,3)p^3(1-p)^{n-3}$
$=C(3,2)0.1^2(1-0.1)^{3-2}+C(3,3)0.1^3(1-0.1)^{3-3}$
$=3(0.01)(0.9)+1(0.001)1$
$=0.027+0.001$
$=0.028$

8 0

3 years ago