Mathematics High School

what is the formula for finding missing angles of a triangle

Answers

Answer 1

Answer:

Now that you are certain all triangles have interior angles adding to 180° , you can quickly calculate the missing measurement. You can do this one of two ways: Subtract the two known angles from 180° . Plug the two angles into the formula and use algebra: a + b + c = 180°

Related Questions

Need help pls very important 25 points here for person who gives good answer will get brainlyest

Answers

Answer: D. 2

Step-by-step explanation:

-3t + 6 = 0

1. Subtract 6 from each side

-3t + 6 - 6 = 0 - 6

-3t = -6

2. Divide each side by -3 to isolate t and get the answer to the equation

-3t/-3 = -6/-3

t = 2

You can check your answer by plugging your calculated value back into the equation and evaluating to find that 0 = 0.

Maribel sold 20% of the cupcakes she made. If she sold 35 cupcakes, then she made how many
cupcakes in all.

Answers

Answer:

20% x 5= 100%

35 x 5= 175

she has a total of 175 cupcakes

Simon is creating the clay structure shown below. Simon has boxes of clay that each contain 200 of clay. How many boxes of clay does Simon need to open to make the sculpture? A. 3 B. 4 C. 5 D. 6

Answers

Answer:

D.6

Step-by-step explanation:

Find the value of x

A.55

B.60

C.85

D.120

Answers

Answer:

A

[tex]x + 125° = 180° \: \: (angles \: on \: straight \: line) \\ x = (180 - 125)° \\ x = 55°[/tex]

What is greater -3.2 or -3

Answers

Answer:

-3 is greater

Step-by-step explanation:

Have a good day :)

I think that it is greater

What is the measure of
RST?

Answers

Answer:

D. 47

Step-by-step explanation:

Evaluate 3m - 5 when m=9
Thank you!!’

Answers

3m-5=22

Explanation

3(9)-5
3 times 9 is 27
27 minus 5 is 22

I've asked this question twice and gotten 2 different answers. this is sooo urgent and I don't know what the right answer is. A long-distance phone company charges $4.95 month plus an additional $.10 per minute. a. Define a variable and write a formula to find the total cost per month for long-distance service. b. Use this formula to find the long-distance charges for 120 minutes of calls in one month.​

Answers

Answer:

C=4.95 +0.10x, where x=minutes

C=4.95 + 120(0.10)

C=4.95 +12.00=$16.95

Hope this helps!!

what's $90.94 with 50% off..?

Answers

Answer:

Write 50% as a decimal number:  

 

STEP 2: Multiply  by 90.94:

Step-by-step explanation: answer is 49.47

Answer:

45.47$

Step-by-step explanation:

50% means to cut things off by half

At a school, 460 of the students walk to school.
the number of students who ride the school bus is 110% of the number of students who walk. How many students ride the school bus?

Answers

Answer:

506

Step-by-step explanation:

To find a percent answer is easy, just do this:

Enter your base number here: 460

Enter your percent here: 110%

460 x (convert 110% to a decimal) 1.1 = 506

Your welcome =)

Answer:

The answer is 506

Step-by-step explanation:

HELPPppPpPPpppppppp BRAINLIESTTTT

Choose the inequality symbol (>,


<


=

Answers

The inequality is < because the equal sign is an equality.
I don’t need a brai

What importance do fossils have to scientists?
A. Fossils are used to create cement, which is used to pave our roads.
B. Fossils provide information about the plants and animals that lived long ago and the nature of the environment at the time.
C. Fossils help keep the Earth's crust from shifting, which reduces the likelihood of earthquakes.
D. Fossils can help prove that aliens from other planets once lived on our Earth, but they all died from some catastrophic
event

Answers

Answer:

B is the answer.

Step-by-step explanation:

 

What is 12 divided by 2/3 and why? Please help

Answers

Answer:

8

Step-by-step explanation:

12/3=4

4 times 2=8

10 – 7w – 13 – 7w + 15

I need help plsss!

Answers

Answer:

12-14w

Step-by-step explanation:

−6 2/1 −(−2 8/1 )+3 3/2

Answers

Answer:

simplify the expression.

Exact Form:

13/2

Decimal Form:

6.5

Mixed Number Form:

6 1/2

Step-by-step explanation:

plz give me brainlyest

Answer: 6 1/2

Step-by-step explanation:

-6 2/1 - (-2 8/1 ) + 3 3/2

-8 - (-10) + 4 1/2

-8 + 10 + 4 1/2

2 + 4 1/2

6 1/2

I didn't really understand some stuff but I think I did this right.. hope this helps!

Need this very badly ​

Answers

Answer:

B) 800 cm^2

Step-by-step explanation:

A=2(wl+hl+hw)

800 = 2(10x15 + 10x10 + 10x15), which is B

Answer:

800 cm^2

Step-by-step explanation:

What is the length of AB? 4 units 5 units 6 units 7 units

Answers

Answer:

the answer is 6 units

Step-by-step explanation:

find point A and point B and then just count the units over from

A to B and you will get AB is 6 units

Answer c

Step-by-step explanation: bc its 6 units

help please i’ll give brainliest.

ΔABC is similar to ΔFED. Answer the questions to find the length of DF .


1. Which side in ΔFED does AB in ΔABC correspond to?
Write your answer in the space below.


2. Which side in ΔFED does CB in ΔABC correspond to?

Answers

Step-by-step explanation:

ΔABC is similar to ΔFED.

AB are the first 2 letters in ΔABC. Similarly, FE are the first 2 letters in ΔFED.

Hence side AB corresponds to side FE.

CB are the last 2 letters in ΔABC. Similarly, DE are the last 2 letters in ΔFED.

Hence side CB corresponds to side DE.

Answer:

1.  EF in ΔFED corresponds to AB in ΔABC.

2. DE in ΔFED corresponds to CB in ΔABC.

3. The length of DF is 10.

Step-by-step explanation:

Given: ΔABC is similar to ΔFED. Find the length of DF.

To Find: The length of side DF in ΔFED

Since, ΔFED is a right-angled triangle and also similar to ΔABC,

Applying similarity of triangles principle,

AB = 4  ,  EF = 8

BC = 3  ,  DE = 6

Now, applying Pythagorean theorem on ΔFED,

Hypotenuse² = Length² + Base²

⇒ DF² = DE² + EF²

⇒ DF² = 6² + 8²

⇒ DF² = 100

⇒ DF = √100

⇒ DF = 10

Final Answer: Hence the length of side DF is 10.

solve the proportion 9x=62

Answers

Answer: x=6.8

Step-by-step explanation:

I figured it out ;)

Answer:

x=6.889

Step-by-step explanation:

9x=62

x=62/9

x=6.889

Can someone help me find the solution?

Answers

Answer:

Solution: y=2

Write an algebraic expression or equation to represent each word phrase.
Seventeen increased by twice a number, n

Answers

Answer:

2n + 17

Step-by-step explanation:

For each year that a gift card goes unused, the value of the card decreases by 5%. What is the value of a $25.00 gift card after 1 year? Show your work.

Answers

Answer:

25*0.95 = 23.75

Step-by-step explanation:

i multiplied by 0.95 because the card is still worth 95% of it's original worth.

you could've done:

25*0.05= 1.75 and then subtract that from 25 to get 23.75, i just find the other way easier.

i hope this helped :)

Help due at 11:59 please help

Answers

Answer:

Step-by-step explanation:

the last choice looks good

Answer: Its the bottom one i believe

Step-by-step explanation:

Domain slope stuff you don't want to hear have a good night :)

What’s the answer to this question ? 4.4y - 5x = -8

Answers

what do you want us to solve for? Step-by-step explanation:

what is the sum of the interior angles of a polygon that has 16 sides

Answers

2520
16-2=14x180=2520

Thomas got a flat tire and had to walk 1/4 mile to the nearest gas station. How many feet did Thomas walk?

Answers

Answer:

[tex]1320\ \text{feet}[/tex]

Step-by-step explanation:

The distance Thomas walked to the nearest gas station is [tex]\dfrac{1}{4}\ \text{mile}[/tex].

The conversion factor for miles to feet is

[tex]1\ \text{mile}=5280\ \text{feet}[/tex]

So

[tex]\dfrac{1}{4}\ \text{mile}=\dfrac{1}{4}\times 5280[/tex]

[tex]=1320\ \text{feet}[/tex]

Hence, Thomas had to walk [tex]1320\ \text{feet}[/tex] to get to the nearest gas station.

The current temperature is 30°C. Over the next eight hours the temperature decreases and then increases, returning back to 30°C. if the temperature initially decrease by 13°C, how much did it subsequently increase?

Answers

Answer:

13°C

Step-by-step explanation:

The number of hours that the temperature fluctuates is irrelevant to the problem.

This problem is asking how many degrees did the temperature increase in order to go back to 30°C after being decreased by 13°C.

Find the new temperature after it decreased:

30°C - 13°C = 17°C

If the temperature after decreasing is 17°C, it needs the same amount it was decreased by to go back to 30°C.

Therefore, the temperature subsequently increased by 13°C to go back to 30°C after being decreased by 13°C.

What is the center of the circle x² + y2 - 4 = 0?

Answers

Answer:

(0,0)

Desmos graphing calculator is a great way to enter the formula of a circle and see a visual example.

Answer: (0,0)

Explanation: The equation for a circle is (x - h)^2 + (y - k)^2 = r^2, where (h,k) is the vertex and r is the radius. Rearranging the given equation, we have that x^2 + y^2 = 4. Therefore, the center of the circle is (0,0), and its radius is 2.

What is the domain of the function? {(-3,-9), (7,9), (9, 1), (7,3)} Colleen wrote her answer as (-3,7,7,9) and she got it marked WRONG! What did she do wrong?​

Answers

Answer: added

Step-by-step explanation:

Graph the linear equation using intercepts. Use a graphing calculator to check your graph.

equations: y= 2/3 x (-4)
y= 1/9x (-3)

Answers

Answer:

desmos .com

Step-by-step explanation:

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