What shapes have diagonals that aren't lines of symmetry

Answers

Answer 1

Answer: Irregular polygons because they can have one side a right angle then all the other sides bent up, with leaves a diagonal not being symmetric.

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Which of the following mathematical expressions isequivalent to the verbal expression “A number, x, squared is 39 more than the product of 10 and x” ? F. 2x = 39 + 10x G. 2x = 39x + 10x H. x^2 = 390 − 10x J. x^2 = 390 + x^10 K. x^2 = 390 + 10x
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Rachel was cutting out some fabric for a friend. She cut a piece that was 5 centimeters wide and had an area of 20 cm power. how long was the piece.

Answers

4 cm, 5 times 4 equals 20

The piece of fabric was 4 centimeters long

Quick! Help me with this! 8 points! (but don't answer until I have the image posted)

Answers

The answer would be 10, because 5/5 is a whole fraction so it is technically 1.So the real problem is what is 1*10 and that = 10

So,

There are two (or more) ways to solve this.

#1: We can notice the pattern as the numerator goes up by 1 each time.

Every time the numerator goes up by 1, the result goes up by 2. Since the previous item was worth 8, and since the number we are trying to find is obviously the next item in the series, we can just add 2 again to get 8 + 2 = 10. So 10 is your answer.

#2: We can recognize that 5/5 is equal to 1.

Since 5/5 is equal to 1, and anything multiplied by 1 remains the same, we can say that 1 * 10 = 10. So 10 is still your answer, without so much brain-work.

7 - 3 ( 5t - 10 ) = 67

Answers

$7-3(5t-10)=67$

$7-(3*5t-3*10)=67$

$7-15t-(-30)=67$

$7-15t+30=67$

$-15t=67-30-7$

$-15t=30$

then...

$t=-(30)/(15)$

$\boxed{\boxed{t=-2}}$

Answer in an annex
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Write the product using exponents: 1/3 • 1/3 • 1/3

Using exponents, the product is ______ .

Answers

\frac{1}{3} ^{3} = 1/3 • 1/3 • 1/3

Jada lives in a city that has an area of 344.6 square miles. Her friend lives in a town that is one-tenth, or 0.1, that size. What is the area of her friend's town?

Answers

Answer:

The area of her friend's town $= 34.46\text{square miles}$

Step-by-step explanation:

Given : Jada lives in a city that has an area of 344.6 square miles.

Her friend lives in a town that is one-tenth, or 0.1, that size.

To find : The area of her friend's town.

Solution : The area of Jada house = 344.6 square miles.

Her friends house is one-tenth or 0.1 of 344.6 square miles.

Actual area of her friend's house is = 0.1 of Area of Jada house

$= 0.1* 344.6$

$= 34.46\text{square miles}$

Therefore, The area of her friend's town $= 34.46\text{square miles}$

344.6 x 0.1 - as it one tenth the size

= 34.46 square miles

What's different with census and sample?

Answers

A census is a study of every unit, everyone or everything, in a population. It is known as a complete enumeration, which means a complete count. A sample is a subset of units in a population, selected to represent all units in a population of interest.

I know when you do a census, you cover the entire population but when you take a sample, you select a group from the population. There can be only one census but there can be many different samples from the same population. Hence, the latter results in sampling error (because it is just one aspect of the population)

Hope this helps have a nice day

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