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2 years ago

Help pleeeeeeeeeease

Mathematics

1 answer:

TEA [102]2 years ago

5 0

Answer:

452.16

Step-by-step explanation:

the equation is A=nr^2

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Some1 help me this due tomorrow and in stressing out

Olenka [21]

Answer:

Step-by-step explanation:

So, as shown in the picture below, you first have to find the line y = -1. Then that’s what your going to reflect. Imagine that your making a print of it, that’s how you will reflect it. Imagine taking a piece of paper with that triangle on it and folding it along that line I drew in my picture (at y=-1). Hope that helped!

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

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2 years ago

Students are running in a relay race. Each team will run a total of 3 miles. Each member of a team will run 1/8 of a mile. How m

Crazy boy [7]

3 / (1/8) = 3 × (8/1) = 24
There needs to be 24 students on a team.

7 0

2 years ago

I will give thanks and five stars to the person that helps me.

pentagon [3]

Answer:

Third option is correct!

Step-by-step explanation:

x+19<28

or, x<9

x = {3,4,5,6}

8 0

2 years ago

Anybody can give me the answer? Please

Shtirlitz [24]

b. One hundred and fifty (150) square feet

8 0

3 years ago