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Nat2105 [25]
3 years ago
14

Will give brainiest Will give brainiest Will give brainiest Will give brainiest Will give brainiest Will give brainiest Will giv

e brainiest Will give brainiest

Mathematics
2 answers:
Licemer1 [7]3 years ago
5 0

Answer:

222.7 cm³ of paper to wrap this.

Step-by-step explanation:

The rectangular prism is SA=2(wl+hl+hw)

Where:

w=5  l=5 h=4  

SA= 2((5*5)+(4*5)+(4*5))

SA=2(25+20+20)

SA=2(65)=130cm³

The square base pyramid is A= lw+l\sqrt{x} (w/2)^2+h^2+w +w\sqrt{x} (1/w)^2+h^2

SA= 6*5+6*\sqrt{x} (5/2)^2+5^2+5*\sqrt{x} (6/2)^2

≈92.69578 cm³

Add the two together 130+92.70 =222.7 cm³

aivan3 [116]3 years ago
3 0

Answer:

i think it is 222.7 cm³

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We are throwing darts on a disk-shaped board of radius 5. We assume that the proposition of the dart is a uniformly chosen point
Vlad1618 [11]

Answer:

the probability that we hit the bullseye at least 100 times is 0.0113

Step-by-step explanation:

Given the data in the question;

Binomial distribution

We find the probability of hitting the dart on the disk

⇒ Area of small disk / Area of bigger disk

⇒ πR₁² / πR₂²

given that; disk-shaped board of radius R² = 5, disk-shaped bullseye with radius R₁ = 1

so we substitute

⇒ π(1)² / π(5)² = π/π25 = 1/25 = 0.04

Since we have to hit the disk 2000 times, we represent the number of times the smaller disk ( BULLSEYE ) will be hit by X.

so

X ~ Bin( 2000, 0.04 )

n = 2000

p = 0.04

np = 2000 × 0.04 = 80

Using central limit theorem;

X ~ N( np, np( 1 - p ) )

we substitute

X ~ N( 80, 80( 1 - 0.04 ) )

X ~ N( 80, 80( 0.96 ) )

X ~ N( 80, 76.8 )

So, the probability that we hit the bullseye at least 100 times, P( X ≥ 100 ) will be;

we covert to standard normal variable

⇒ P( X ≥  \frac{100-80}{\sqrt{76.8} } )

⇒ P( X ≥ 2.28217 )

From standard normal distribution table

P( X ≥ 2.28217 ) = 0.0113

Therefore, the probability that we hit the bullseye at least 100 times is 0.0113

3 0
3 years ago
(GEOMETRY), please help meee
Dmitry [639]

14. Trick question, ignore the side.


Call the angle b.


34 + b + b = 180


2b = 146


b = 73


choice b


15. That's intersecting chords so the product of the segment lengths are equal:


5(22)=10 x


x = 5(22)/10 = 11


choice a


16. Intersecting tangent and secant;


x^2 = 5(19)


x = \sqrt{95} \approx 9.75


Choice a

5 0
3 years ago
Which graph shows the solution to the system of linear inequalities below?
Tasya [4]

Since there isn't a picture of the graphs, I attached one, of my graph, to this answer.

I'm also assuming (y2 2x+1) is actually (y< 2x+1).

Possible solutions are within the purple section of the attached image.

I hope this is helpful to you.

5 0
2 years ago
The mayor of a large city claims that the average net worth of families living in this city is at most $300,000. A random sample
Sergeu [11.5K]

Answer:

Check the explanation

Step-by-step explanation:

Below are the null and alternative Hypothesis,

Null Hypothesis, H0: μ = 300000

Alternative Hypothesis, Ha: μ < 300000

Test statistic,

z = (xbar - mu)/(sigma/sqrt(n))

z = (288000 - 300000)/(80000/sqrt(25))

z = -0.75

P-value Approach

P-value = 0.2266

As P-value >= 0.05, fail to reject null hypothesis.

8 0
3 years ago
What is the smallest three digit number where exactly two digit are the same
sergejj [24]

Answer:

100

Step-by-step explanation:

We want to find a number of the form x y z

We want to of the digits to be the same and for it to be as small as possible

For the number to be small, we want x to be 1

1 y z

We can either have y or z be 1 or y =z

If y=z=0 that is smaller than y or z =1

100

4 0
3 years ago
Read 2 more answers
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