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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!

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Find a function rule for the line that passes through the origin (0,0) and the point (5, - 13)

inessss [21]

Answer:

The Function rule for line is: $\mathbf{y=-\frac{13}{5}x}$

Option A is correct option.

Step-by-step explanation:

Find a function rule for the line that passes through the origin (0,0) and the point (5, - 13)

The function rule is of form: $\mathbf{y=mx+b}$

where m is slope and b is y-intercept

Finding slope:

The formula used to find slope is: $Slope=\frac{y_2-y_1}{x_2-x_1}$

We have $x_1=0, y_1=0, x_2=5, y_2=-13$

Putting values and finding slope

$Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{-13-0}{5-0}\\Slope=\frac{-13}{5}\\Slope=-\frac{13}{5}$

Finding y-intercept

We will use point(0,0) to find y-intercept

$y=mx+b\\0=-\frac{13}{5}(0)+b\\0=0+b\\b=0$

So, y-intercept is 0

The Function rule for line having slope m=-13/5 and y-intercept b=0:

$y=mx+b\\y=-\frac{13}{5}x+0\\y=-\frac{13}{5}x$

So, The Function rule for line is: $\mathbf{y=-\frac{13}{5}x}$

Option A is correct option.

6 0

2 years ago

If LM = 7 and LN 7 and LN = 18, what is MN?

Lena [83]

Answer:

There are two possible values: MN=5 or MN=19

Step-by-step explanation:

The points L and N are collinear, so we can visualize them on a right line as in Figure 1.

First suppose that M is between L and N as in Figure 2. Then we can compute the distance between L and N as LN=LM+MN. Substracting LM from both sides, we obtain that MN=LN-LM=12-7=5.

For the other possibility, suppose that M is not between L and N as in Figure 3. Because LM<LN, it's impossible that M is located further to the right than N. Then M isn't at the right of L. Therefore, M is at the left of L, so L is between M and N, so the distance between M and N is given by MN=ML+LN=LM+LN=7+12=19.

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I hope this helps

6 0

2 years ago

Please Help!!!

Marianna [84]

So, 10 x 10 is 100, x 8 is 800, your answer is D.

Formula for a cylinder = pi x r^2 x h

8 0

3 years ago

Write the time 1:49 in two ways

jekas [21]

Answer:

1 hour and 45 mins or 1 hour, 40 mins, and 5 seconds

Step-by-step explanation:

5 0

2 years ago

Helpp guys thank youu

Debora [2.8K]

1. if we add something in x then it will also add up in value of y

2. x by 5 times then y value increases by 3*5 = 15 times

3. if x is added with 5 then y value increases by 8.

<h3>What is Algebra?</h3>

Algebra is the part of mathematics that helps represent problems or situations in the form of mathematical expressions.

As, per the first part

y=x

So, if we add something in x then it will also add up in value of x.

In second part,

y=3x

If x by 5 times then y value increases by 3*5 = 15 times

In third part, if x is added with 5 then y value increases by 8.

Learn more about algebra here:

brainly.com/question/953809

#SPJ1

7 0

1 year ago