20 Points
Can anyone help me with these Geometry questions? Will give Brainliest.

Answer: First multiply 10 by 20.5 because x represents the number of weeks.  You get 205.  Next add 165.85 to that and you get 370.85 as your final answer.  

Step-by-step explanation:

Answer:

165.85 + 20.5x

or D

FIRST, we need variables. Once we define variables, it's much easier to turn this word problem into a math problem.

Let a = first side

Let b = second side

Let c = third side

NOW, we can turn the words into equations:

"a triangle has a perimeter of 165 cm."

a + b + c = 165

"the first side is 65cm less than twice the second side."

a = 2b - 65

"the third side is 10cm less than the second side."

c = b - 10

Before we finish, I have to ask: Who writes problems like this??? Pointless problems like these are why kids don't like math! Ugh. Drives me crazy. It's a shame, because solving math problems really does have a certain satisfaction, once you learn how. [Okay. I'm done. Back to the problem.]

If we could get this to have only one variable, we could solve it. Substitution to the rescue!

a + b + c = 165 (rewrote equation from above)

(2b - 65) + b + (b - 10) = 165 (substituted "a" and "c" from equations above)

See how that works? Let's solve it.

2b - 65 + b + b - 10 = 165 (dropped the parentheses, because there was nothing to distribute, not even a minus sign)

4b - 75 = 165 (combined like terms)

4b = 240 (added 75 to both sides)

b = 60 (divided both sides by 4)

We found the second side! We can find the first and third sides using those equations from above:

a = 2b - 65

a = 2*60 - 65

a = 120 - 65

a = 55

c = b - 10

c = 60 - 10

c = 50

All done.

PLEASE MARK ME AS BRAINLIEST

Step One - Define the Unknown Variable

First we need to define our unknown variable. For this case, I am going to use the letter 's' for the second side of the triangle (no actually because the question told you to). The reason I am using the second side as the unknown is because the second side is independent. The first and third sides' lengths depend on the length of the second side.

Step Two - Write an Equation

We need to use what we know to write the equation. First, we know that the perimeter of a polygon is the sum of the lengths of all the sides. The first side is 65 less than two times 's'. This would be 2s-65. The second side is just s. The third side is 10 less than 's'. So it would be s-10. The perimeter is all of the sides added up, so the expression for all the sides added up is                    (2s-65)+(s)+(s-10). The first, second, and third side added up is 165. So the equation for 1. is (2s-65)+(s)+(s-10) = 165.

Step Three - Solve the Equation

To solve the equation, you need to isolate the variable, which is 's'.

First, let's simplify the equation.

(2s-65)+(s)+(s-10) = 165.

4s-75 = 165.

Now we need to remove the 75. To get rid of the 75, you must add 75. But since you are adding 75 to one side of the equation, you must add 75 to the other side of the equation to make it equal.

4s-75+75 = 165+75

4s = 240

Now we need to remove the 4. To get rid of the 4, you have to divide each side by 4.

4s÷4 = 240÷4

s = 60

The length of the second side is 60 cm.

Step Four - Find the Lengths of all Sides

Now we know the length of the second side, we can find the length of the other sides.

The first side is 65 less than two times of 60.

Two times of 60 is 60×2 or 120.

65 less than 120 is 120-65 or 55.

The first side is 55 cm.

The third side is 10 less than 60.

10 less than 60 is 60-10 or 50.

The third side is 50.

So the lengths of the three sides are 55, 60, and 50.

Step Five - Check Your Answer

Now let's see if the three sides added up equals to 165.

Well, 55+60+50 does equal 165, so we know this is right.

The equation that represents the perimeter of the triangle is                      (2s + 65) + (s) + (s + 10) = 165. The length of each side of the triangle is 55, 60, and 50.

Answer:

Angle x = 48

Angle y = 42

Side w = 1.6cm

Answer:

-2.4 · [tex]10^{5}[/tex]

Step-by-step explanation:

Answer:

I believe 225 hamburgers were sold on Monday.

Step-by-step explanation:

Answer:

105.8

Step-by-step explanation:

All you have to do is add them up :)

Answer:

95.80

Step-by-step explanation:

Btw this is very easy Hope this Helps tho (✿◡‿◡)

Answer:

The answer would be two and four

Step-by-step explanation:

Answer:

II and IV

Step-by-step explanation:

H and S only would appear the same after 180° rotation.

Explanation:

Check out the diagram below. I've marked the angles that pair up which are congruent to one another. Note the order is important. The AAS rule is different from ASA. In the diagram, the green segments are not between the red and blue angles.

Note: the blue angles are congruent by the vertical angle theorem.

Answer:

d and b

Step-by-step explanation:

Answer:

Sophia is correct choose D

Step-by-step explanation:

it was correct for me

Answer:

x=10

Step-by-step explanation:

Just do the math. Its easy.

Answer:

x=10

Step-by-step explanation:

i dont explain

Answer:

0 x 1 x 10 = 0

Step-by-step explanation:

0 x 1 x 10 = 0

This is problem that has to do with multiplication with 0.

Since Derek has 0 boxes of markers and each box contains 10 markers, 6 black and 4 red, think of it as Derek having 0 groups of a box of markers. This means Derek has 0 boxes where each box contains 10markers.

0 boxes means Derek has no markers.

Answer:

[tex]-x^{3}+x^{2} +x-3[/tex]

Step-by-step explanation:

Remove Parentheses

Subtract  3x^3-4x^3

Leave x^2

Subtract 2x-x

Leave the 3

Answer:

bro you good go talk to someone if you need mental health

Step-by-step explanation:

Answer:

M = 6 inches

Step-by-step explanation:

M and the line that straight up says "6 in" are the same size. besides, this gives us very little information to go off of.

May I have brainliest please? :)

Answer : M = 7.5 Inches

Step-by-step explanation:

Its obvious.

Answer:

10

Step-by-step explanation:

To find 1/4 of 40, is the same as dividing 40 into four parts (each of the four parts become 1/4 of the whole). 40/4=10.

Answer:

The two expressions are;

4(3x + 5)

and

(6x + 10) + (6x + 10)

Step-by-step explanation:

Here, we want to write two different expressions to represent the perimeter of the square

The perimeter is given as 12x + 20

Using factoring, we can have this as;

4(3x + 5)

Otherwise, we can have

(6x + 10) + (6x + 10)

Answer:

48

Step-by-step explanation:

I solved the problem step by step on paper and got it right

Answer:

Line equation

y=0.2727272727272727x−1                Slope 0.27         Intercept   -1

Step-by-step explanation:

Answer:

Step-by-step explanation:

If Kale is at 2345 feet and needs to reach 3283, he will need to travel another 938 feet.

The vertical distance between Kale and the mountain peak is  ft

The given parameters are:

Hike Distance = 2345 ft

Peak = 3283 ft

Let the vertical distance be x.

So, we have:

x + 2345 = 3283

Subtract 2345 from both sides

x = 938

Hence, the vertical distance between Kale and the mountain peak is  ft

Read more about difference at:

https://brainly.com/question/1601404

#SPJ2

Answer:

5 to 3 (5:3)

Step-by-step explanation:

drama: 40     film:24

40:24         /2

20:12         /2

10:6           /2

5:3

Answer: 5/3

Step-by-step explanation:

The ratio is 40/24 and to simplify this, you need to divide both sides by the largest number possible while still getting a whole number. You can divide both sides by 8 which will get you 5/3.

The ratio of students in the drama club to students in the film club is 5/3.

Move all terms that don't contain y to the right side and solve.

y = 3 − 2x

Answer:

Y= 2x - 3

Step-by-step explanation:

Answer:

Step-by-step explanation:

3x^2 * 2x^3= 6x^5

Multiply the 3 and 2 to get 6. Add the exponents.

Answer:

2.693995, or −2.945995 or 0.252

Step-by-step explanation:

Answer:

4 or 5

Step-by-step explanation:

Answer:

x-intercept: 8; the number of hours

y-intercept: 400; distance to be covered

Answer:

3 and 4 are complementary angles

Step-by-step explanation:

I cant see the answers very well so if that isnt an answer lmk

Answer:

-1.5<x<3

_ _

idk how to type less than or equal to signs but thats what I'm trying to say

Answer:

x = 24°

General Formulas and Concepts:

Pre-Alg

Geometry

Step-by-step explanation:

Step 1: Set up equation

x + 156 = 180

Step 2: Solve for x