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postnew [5]
2 years ago
9

What do you know about expressions and equations? What are some examples of expressions and equations? Have you ever thought abo

ut what you should do if you don’t know a certain value? Give an example of how you think you should handle that type of situation.
Mathematics
1 answer:
aliina [53]2 years ago
4 0

Answer:

Answer: An equations is a number, a variable, or a combination of numbers and variables and operational symbols. An equation is made up of two expressions connected by an equal sign.

Example Expression: 8x+5y-3x-5

Example Equation: 5x-4=x

Step-by-step explanation:

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A square of side length s lies in a plane perpendicular to a line L. One vertex of the square lies on L. As this square moves a
user100 [1]

Answer:

Part (A) The required volume of the column is s^2h.

Part (B) The volume be s^2h=\frac{s^2h}{2}+\frac{s^2h}{2}.

Step-by-step explanation:

Consider the provided information.

It is given that the we have a square with side length "s" lies in a plane perpendicular to a line L.

Also One vertex of the square lies on L.

Part (A)

Suppose there is a square piece of a paper which is attached with a wire through one corner. As you blow it up it spins around on the wire.

This square moves a distance h along​ L, and generate a​ corkscrew-like column with square​.

The cross section will remain the same.

So the cross section area of original column and the cross section area of twisted column at each point will be the same.

The volume of the column is the area of square times the height.

This can be written as:

s^2h

Hence, the required volume of the column is s^2h.

Part (B) What will the volume be if the square turns twice instead of once?

If the square turns twice instead of once then the volume will remains the same but divide the volume into two equal part.

s^2h=\frac{s^2h}{2}+\frac{s^2h}{2}

Hence, the volume be s^2h=\frac{s^2h}{2}+\frac{s^2h}{2}.

5 0
3 years ago
Point D is on line segment CE.Given CD = X, DE = 7, and CE = 2x, determine the numerical length of CD
Usimov [2.4K]

Answer:

CD = 7

Step-by-step explanation:

Since D is on the line segment CE then

CE = CD + DE , substitute values

2x = x + 7 ( subtract x from both sides )

x = 7

Thus

CD = x = 7

7 0
3 years ago
Which pair of numbers have a GCF of 7?
Inessa [10]
A GCF is the greatest common factor. It is the largest number that fits into other numbers. A seven cannot fit into a number smaller than itself, that doesn't work. Try to fit 7 into a smaller number like 4, it doesn't work.

Option A is 21 and 3 and Option C is 7 and 1. Those can be eliminated because 7 is larger than 3 and 1.

Option B is 7, 14. 7 Is the largest number that goes into 7 and it goes into 14. So B works.

28 and 7 is Option D. 7 is the largest number that goes into 7 and it goes into 28, so D works.
6 0
3 years ago
a package shaped like a cube has an edge that is 28 cm long. How much space is available to pack inside your box?
Tema [17]
Answer: 21,952 cm³


Explanation:

Volume = 28 x 28 x 28 = 29 152 cm³

7 0
3 years ago
Jonathan took 5 minutes to walk to the bus-stop, then spent 63 minutes waiting for the bus. If the bus journey to his school too
valentina_108 [34]

Answer:

78 minutes or 1 hour and 18 minutes

Step-by-step explanation:

Add 5 and 63 and 10

4 0
2 years ago
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