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vodka [1.7K]
3 years ago
9

Unit 1 test : geometry basics

Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0
1) Points, Lines, and Planes

(2) Linear Measure and Precision

(3) Points Between Line Segments

(4) The Midpoint

(5) The Pythagorean Theorem

(6) The Distance Formula
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Solve please I really need this answer so if you k ow it please solve it thank u
-Dominant- [34]

Answer:

E

Step-by-step explanation:

2/3 times 1/2 is equal to 1/3 and 1/3 times 1/2 is equal to 1/6 yea I'm pretty smart

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3 years ago
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Somebody help me please its easy 30pts brainliest!!!!
Maksim231197 [3]

Answer:

Number Seven is B. Number 8 is F. Number 9 is D.

I hope this helps and is correct!

Step-by-step explanation:


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A 95 percent confidence interval for the mean of a population is to be constructedand must be accurate within 0.3 unit. A prelim
jarptica [38.1K]

Answer:

B. 359

Step-by-step explanation:

Given that:

The margin of error (e) must be within 0.3 unit, The standard deviation (σ) = 2.9 and the the confidence level = 95% = 0.95

α = 1 =0.95 = 0.05

\frac{\alpha}{2}=\frac{0.05}{2}=0.025

The z score of 0.025 corresponds to the z score of 0.0475 (0.5 - 0.025) which can be gotten from the normal probability table.

Therefore: z_\frac{\alpha}{2}= z_{0.025}=1.96

The formula for the margin of error is given by:

e=z_{0.025}\frac{\sigma}{\sqrt{n} } \\Substituting:\\0.3=1.96*\frac{2.9}{\sqrt{n} } \\\sqrt{n}=\frac{1.96*2.9}{0.3}\\\sqrt{n} =18.95\\  n=18.95^2=359

Therefore the smallest sample size (n) is 359

5 0
3 years ago
Let f be the function that determines the area of a circle (in square cm) that has a radius of r cm. That is, f ( r ) represents
Zepler [3.9K]

Answer:

(a)f(4) square cm.

(b)f(10.91)-f(10.9) Square centimeter.

Step-by-step explanation:

f(r)=the area of a circle (in square cm) that has a radius of r cm.

(a)Area (in square cm) of a circle whose radius is 4 cm.

Since r=4cm

Area of the circle = f(4) square cm.

(b) When the radius of the increases from 10.9 to 10.91 cm.

  • Area of the circle with a radius of 10.91 = f(10.91) square cm.
  • Area of the circle with a radius of 10.9 = f(10.9) square cm.

Change in the Area = f(10.91)-f(10.9) Square centimeter.

4 0
4 years ago
Which of the following is a true statement?
aev [14]

Answer:

13/15 > 4/5 is a true stament.

Step-by-step explanation:

The left side is 0.86 repeating turned into a decimal. which means 0.86 is greater than the right which the right is 0.8 turned into a decimal. which in this case this means that the given stament is always true.

4 0
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