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12345 [234]
3 years ago
13

The diagram shows two congursnt polygons

Mathematics
1 answer:
stira [4]3 years ago
6 0

Answbig

Step-by-step explanation:

gd tjsrntls,dnlrenrkfnrslnrljew

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In a factory, a parabolic mirror to be used in a searchlight was placed on the floor. it measured 50 centimeters tall and 90 cen
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Y=-2/81x^2+50 is the answer 
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3 years ago
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Determine the sign of the some of negative 8 + 11
AVprozaik [17]

Answer:

positive 3

Step-by-step explanation:

-8 + 11 is 3. the other way you can think of it is by subtracting 8 from 11.

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3 years ago
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Simply the expression (4-2i)-(-1+3i)
Arisa [49]

Answer:

224

Step-by-step explanation:

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3 years ago
A company that produces dog food claims that its bags contain 11 kg of food. From
andriy [413]

By testing the hypothesis we can conclude that the bag does not contain 11 kg of food.

Given mean of 10.6 kg, population standard deviation of 0.6 and sample size of 25.

We are required to find whether the company is right in saying that their bags contain 11 kg of food.

First we have to make hypothesis.

H_{0}:μ≠11

H_{1}:μ=11

We have to use t statistic because the sample size is less than 30.

t=(X-μ)/s/\sqrt{n}

We will use s/\sqrt{n}=0.6 because we have already given population standard deviation of weights.

t=(11-10.6)/0.6

=0.4/0.6

=0.667

Degree of freedom=n-1

=25-1

=24

T critical at 0.05 with degree of freedom 24=2.0639

T critical at 0.05 with degree of freedom is greater than calculated t so we will accept the null hypothesis.It concludes that the bags donot contain 11 kg of food.

Hence by testing the hypothesis we can conclude that the bag does not contain 11 kg of food.

Learn more about t test at brainly.com/question/6589776

#SPJ1

3 0
1 year ago
At a camp, kids can choose swimming, art, or music. 40 kids choose swimming, 16 choose art, and 24 choose music. What is the rat
Svetradugi [14.3K]

Answer:

13 : 20

Step-by-step explanation:

Given that:

  • 40 kids choose swimming
  • 24 choose music
  • 16 choose art  

So the ratio of kids who choose music to kids who choose swimming:

Number of kids choose music : Number of kids choose swimming

  26 : 40

= 13 : 20

Hope it will find you well

8 0
3 years ago
Read 2 more answers
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