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
Inessa05 [86]
3 years ago
12

Helpppp pleaseeeee and could you put an explenation??? pleaseeee

Mathematics
1 answer:
Illusion [34]3 years ago
4 0

Answer:

Step-by-step explanation:

The angles would be supplementary

45 + 5x + 35 = 180

5x + 80 = 180

5x = 100

x = 20

To find out why they are supplementary, refer to the transversal below

∠3 = ∠7 (corresponding angles)

∠8 = 180 - ∠7 (supplementary angles)

And since ∠7 = ∠3...

∠8 = 180 - ∠3 which is why (in the problem) those two angles are supplementary (adding to 180 degrees)

You might be interested in
Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains liters of a dye solution with a
Alja [10]

Answer:

t = 460.52 min

Step-by-step explanation:

Here is the complete question

Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains 200 liters of a dye solution with a concentration of 1 g/liter. To prepare for the next experiment, the tank is to be rinsed with fresh water flowing in at a rate of 2 liters/min, the well-stirred solution flowing out at the same rate.Find the time that will elapse before the concentration of dye in the tank reaches 1% of its original value.

Solution

Let Q(t) represent the amount of dye at any time t. Q' represent the net rate of change of amount of dye in the tank. Q' = inflow - outflow.

inflow = 0 (since the incoming water contains no dye)

outflow = concentration × rate of water inflow

Concentration = Quantity/volume = Q/200

outflow = concentration × rate of water inflow = Q/200 g/liter × 2 liters/min = Q/100 g/min.

So, Q' = inflow - outflow = 0 - Q/100

Q' = -Q/100 This is our differential equation. We solve it as follows

Q'/Q = -1/100

∫Q'/Q = ∫-1/100

㏑Q  = -t/100 + c

Q(t) = e^{(-t/100 + c)} = e^{(-t/100)}e^{c}  = Ae^{(-t/100)}\\Q(t) = Ae^{(-t/100)}

when t = 0, Q = 200 L × 1 g/L = 200 g

Q(0) = 200 = Ae^{(-0/100)} = Ae^{(0)} = A\\A = 200.\\So, Q(t) = 200e^{(-t/100)}

We are to find t when Q = 1% of its original value. 1% of 200 g = 0.01 × 200 = 2

2 = 200e^{(-t/100)}\\\frac{2}{200} =  e^{(-t/100)}

㏑0.01 = -t/100

t = -100㏑0.01

t = 460.52 min

6 0
3 years ago
Bens mom wants to buy carpet for the family room the measures 12 feet by 11 feet she can purchase the carpet on sale for $6 how
podryga [215]
12 times 11 is 132.
132 times $6 is $792

Hope this helps!
7 0
3 years ago
Read 2 more answers
Cheyenne is playing a board game. Her score was - 130 at the start of her turn, and at the end of her turn
Svet_ta [14]

Answer: -245

Step-by-step explanation: The reason is because if you add -245 to -130 you will get her present score which is -375.

-245 + (-130)

6 0
4 years ago
5. A video store charges a monthly
Rasek [7]
Answer: 8 movies

12 + 1.50x = 3x

Move the variables to one side

12 = 1.50x

Isolate x

8 = x


Check:

3(8)= 24

12.00 + 1.50(8) = 24
8 0
3 years ago
Find the value of X<br> 4.5<br> 8.9<br> 6.5<br> X<br> 13<br> b<br> 11<br> can someone answer
Lorico [155]
11, add six and a half to four and a half.
5 0
2 years ago
Other questions:
  • Guys please do the question at the bottom thanks.
    15·1 answer
  • Use the Pythagorean theorem to find b.<br><br> b, 13, 12<br><br> b =
    12·2 answers
  • The mayor of a town places a map of the town on a coordinate grid with Town Hall at the point (0,0) and with each unit represent
    6·2 answers
  • Which of the expressions are equivalent to angle z?<br><br>​
    12·1 answer
  • Kayla’s class went on a field trip to an aquarium. One tank had 30 clown fish. She miscounted the total number of clown fish in
    8·1 answer
  • Please help!
    14·2 answers
  • Which of the following is a polynomial?
    6·1 answer
  • Please help !!!!!!!!!
    9·1 answer
  • If 0.142857142857......is expressed in the form m/n, then what is the value<br>of (2m + n)?​
    12·1 answer
  • Find surface area of a rectangular prism 3 ft 2 ft 6 ft​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!