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3 years ago

Step by step plz my geometry is very weak. thank you

Mathematics

1 answer:

Shtirlitz [24]3 years ago

5 0

For problem #1 There is a formula to find the measure of each interior angle in aNy polygon. This formula is (n-2)*180 divided by n

n stands for the number of sides of a polygon

In this case we have a NONAGON so the value of n would be 9

Plug that value of n into the formula and you should get your answer in degree units ;)

For #2, the first shape is a trapezoid. There is a formula for the area of a trapezoid and this is Area= $\frac{a+b}{2}*h$

a= the base of the trapezoid (let's say that is 9 units)

b= the other base of the trapezoid (this would be 15 units)

h= the height of the trapezoid (8 units)

Plug the numbers into the formula I gave you and you should get your answer in units squared

b) The second shape is a regular hexagon. We know it's regular because they show you the tick marks that means that all the sides in that hexagon are the same length.

The formula is Area = $\frac{1}{2}*a*p$

a= the apothem which is the length going from the center straight down to the edge forming a 90-degree angle. They give you this length in the drawing which is 3 units.

p= perimeter The perimeter can be found by adding up all the sides of the hexagon. They tell you each side is 4 units and the hexagon has 6 sides, so the perimeter is 4+4+4+4+4+4= 24 units

Plug the numbers into the formula I gave you and you should get your answer in units squared

c) To find the area of the next shape, you can split the figure into three different shapes composed by a parallelogram, a trapezoid, and a rectangle.
I already gave you the formula to find the Area of the trapezoid so I hope you can figure that out. If you struggle, reach out and I can help.The area of a parallelogram is A=base*height and the area of a rectangle is A=side*side
Add up those 3 areas and you will get your answer!

You might be interested in

A scientist had 3/5 liter of solution. He used 1/6 of the solution for an experiment. How much solution did the scientist use fo

loris [4]

13/30, because you find the common denominator, 30.

From there, what you do is think, what times 5 is 30? (Talking about 3/5) 6! So you multiply 3 and 6, and get 18/30.

Next, do the same with 1/6, and you get 5/30.
Finally, subtract 5/30 from 18/30, and you get 13/30.

Hope this helps!

4 0

3 years ago

Plz I need help !!!!!

Ad libitum [116K]

So how you do scientific notation is, however many places you move the decimal point to the left is the number that you put in the power. For example, Mercury's mass is 330,000,000,000,000,000,000,000. You move the decimal point 23 places to the left to get 3.3 x 10^23. ( ^ means power. The little number that is next to the 10)

Now according to the question, the mass of Jupiter is 5.8 x 10^3 multiplied by 3.3 x 10^23 (5,800 x 330,000,000,000,000,000,000,000).

The answer to part A is,
1,941,000,000,000,000,000,000,000,000

Then, 3.2 x 10^2(X)=5.8 x 10^3 x 3.3 x 10^23

I don't know if you know how to do algebra, but this is very simple to solve. All you do is divide bolth sides of the equation by 3.2 x 10^2 leaving X (Earths mass) on the left.

For the right side need to divide 320 by 1,941,000,000,000,000,000,000,000,000. This will be the answer to part B

Hopefully this was helpful enough for you to show your work. Good luck : )

3 0

3 years ago

What is the length of a rectangular table that is 18 sq ft and the width is 3 feet

notka56 [123]

I'm assuming 18 sq ft is the area, divide that by the width to get 9 feet. (Length x Width = area)

4 0

2 years ago

Read 2 more answers

If z/3 = 6, what is z equal to?

Elan Coil [88]

Answer:

z = 18

Step-by-step explanation:

z/3 = 6

Multiply by 3 on both sides

z/3 * 3 = 6*3

z = 18

4 0

3 years ago

Read 2 more answers

the amount of snowfall in jan was 2 3/4 feet. the amount of snowfall in february was 1 2/3 feet. how much snow fall was there in

Mkey [24]

Answer this is an example 4 you

To do this problem, you need to change the way the fractions are displayed so that you can simplify them.

The first step is to change them to improper fractions: fractions like 4/3 that represent more than 100% (parts adding to more than one whole).

For example, to change the first fraction in this way, multiply the number in front (2) by the bottom number:

2 * 3 = 6

This means the 2 can also represent 6 / 3. Remember that 1 equals 3/3 so 2 equals 6/3. Now add this to the 1/3 you started with, and you end up with 7/3.

Do the same for the other fraction.

Now that you have both fractions written in this way, you can multiply each by the other's denominator to arrive at their LCD (least common denominator). It won't always be least, but you can always simplify further. In this case, the numbers are small enough that it likely won't matter.

You will end up with a fraction of halves: some number x, over 2, meaning x number of halves.

Your other fraction is 7/3. So the common denominator is the bottom numbers multiplied together: 2 * 3 = 6.

To change 7/3 to a fraction of sixths, you multiply the whole thing by two. This gets the bottom number to be six.

7 * 2 = 14

3 * 2 = 6

So this fraction can also be written as 14/6. Once again, do the same to the other fraction (but multiply by 3, to get the other fraction into sixths also, since it is currently halves).

Now you have two fractions that are both in parts of six. A ratio (x:y) is nothing more than a fraction itself. So if you had for example the ratio

2/5 : 10/5

This ratio could also be written as 1/5 : 5/5, or 1/5 to 1. Both numerators (the top number) are divisible by 2, so you can divide them both by 2 and end up with a simplified version of the same ratio.

Whatever ratio you end up with (14/6 : some other fraction), do the same thing to it. See if any of the numbers share a common factor, and simplify where possible. If it's not possible to simplify further, you're done.

6 0

2 years ago