1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elena55 [62]
3 years ago
9

PLEASE HELP!!!

Mathematics
2 answers:
nika2105 [10]3 years ago
4 0

Answer:

x = 40

Step-by-step explanation:

x + 100 +  x = 180 {Straight line angles}

2x   + 100 = 180      {subtract 100 from both sides}

         2x = 180 - 100

         2x = 80      {Divide both sides by 2)

           x = 80/2

          x = 40

Yuki888 [10]3 years ago
3 0

Answer:

x=40

Step-by-step explanation:

2x+100=180

2x=180-100

2x=80

x=40

You might be interested in
Bybybububbiicbjoknbbookbbvxxx
Nat2105 [25]
Free points rights anyways can someone help me with this answer

A 85-kg is clown is fired from rest out of 480-kg cannon. If the clowns speed is 18 meters per second after the firing, then what is the recoil speed of the cannon? (Round your answer to the nearest tenth)
8 0
3 years ago
At 7:00 A.M., Alicia pours a cup of tea whose temperature is 200°F. The tea starts to cool to room temperature (72°F). At 7:02 A
alexgriva [62]

Answer: A) Option B

B) 22.3 minutes.

Step-by-step explanation:

The temperature decreases in an exponential decrease, this means that we can write the equation as:

T(x) = A*r^x + B

Where A is the difference between the initial temperature and the room temperature, B is the room temperature, and r is a positive number smaller than 1, that says "how fast" the temperature decreases (and x is the variable, in units of time)

We know that the initial temperature

A = 200° - 72° = 128°

B = 72°

T(x) = 128°r^x + 72°

The only option with those two values is option B.

T(x) =  128(0.989)^x + 72

We should check that when x = 2m, the temperature must be 197°

T(2m) = 128*(0.989)^2 + 72 = 197.2° (that we can round down to 197°)

So this equation is correct

Now we want to find the time such the temperature is 172°F

then:

172° = 128°(0.989)^x + 72°

100° = 128°(0.989)^x

100/128 = (0.989)^x

x = ln(100/128)/ln(0.989) = 22.3 minutes.

Let's check in our equation:

T(22.3) =  128°(0.989)^22.3 + 72 = 172°

8 0
3 years ago
Population Proportion: unknown Sample Proportion: ˆ p = 0.86 Sample size: n = 169 1. Based on the sample, give a point estimate
BartSMP [9]

Answer:

Round to nearest 10

Step-by-step explanation:

3 0
3 years ago
SIMPLIFY<br> 7x to the power of 2 + 6x + 9x to the power of 2 - 5x
Marizza181 [45]
7x^2+6x+9x^2-5x=(7x^2+9x^2)+(6x-5x)=16x^2+x
4 0
3 years ago
Choose the function whose graph is given below.
kompoz [17]
Where is the pic?
i need to see it
3 0
3 years ago
Other questions:
  • Solve by substitution-5x+4y=22 x - 3y = 0A) No solution.
    5·1 answer
  • Which equation represents a linear function? Equation 1: y = 2x + 1 Equation 2: y2 = 3x + 1 Equation 3: y = 5x5 − 1 Equation 4:
    10·2 answers
  • The diagram shows a square pyramid over a cube. What is the volume of the entire figure?
    12·1 answer
  • 3,9,7,21,19,57.55,165 what is the last number?
    9·1 answer
  • A shop repairs both audio and video components. Let A denote the event that the next component brought in for repair is an audio
    8·1 answer
  • PLS HELP ME ASAP FOR 7. A and B! (SHOW WORK!!!) + lots of points
    13·1 answer
  • a grocery store paid 298.65 for 15 racks of bread.this can be expressed by the equation y=kx.how much would they have paid for 1
    14·1 answer
  • Is 3/8 bigger than 45/100
    11·1 answer
  • Li’s family is saving money for their summer vacation. Their vacation savings account currently has a balance of $2,764. The fam
    6·2 answers
  • What do I have to major in to become an astronomer and approximately how long would I have to stay in college?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!