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
vovangra [49]
3 years ago
12

Can someone help me plz!!!

Mathematics
1 answer:
Ann [662]3 years ago
8 0
The sum of angles in a triangle is 180°.
.. (x +40) +(3x -17) +(2x -5) = 180 . . . . . angle relationship in a triangle
.. 6x +18 = 180 . . . . . . . . . . . . . . . . . . . .simplify the sum
.. x +3 = 30 . . . . . . . . . . . . . . . . . . . . . . .divide by 6; then subtract 3
.. x = 27


_____
Check:
The angles are 67°, 64°, 49°, which add to 180°.
You might be interested in
Please help me find the answers <br> For the mean median mode range mm max q1
mel-nik [20]

Everything has been explained in there

6 0
3 years ago
The National Weather Service keeps track of the temperature for a given day in a given city. It also keeps track of this informa
astra-53 [7]
Between 2pm and 4pm the average rate of change is zero.
I can't see the answer choices for the second part of the question.
5 0
3 years ago
Sulin cuts a ribbon into two pieces in the ratio 5 : 3. The shorter piece is 42 cm long. What is the length of the original ribb
blagie [28]
You divide 42 by 3 then multiply what you get times 5. it should equal 60 cm
8 0
3 years ago
Value discounting refers to the fact that the percieved value of the reinforcer is less the longer you have to wait for it. See
vekshin1

Answer:

there is an economic principle that states that 1 dollar today is worth more than 1 dollar in the future, since an invested dollar could earn interests and gain value.

For example, we can assume a 6% interest rate (0.5% monthly interest rate), and using the present value formula we can determine the present value of $100:

  • given to us in 30 days = $100 / (1 + 0.5%)¹ = $99.50
  • given to us in 150 days = $100 / (1 + 0.5%)⁵ = $97.54
  • given to us in 300 days = $100 / (1 + 0.5%)¹⁰ = $95.13

In order to calculate the value of $100 given to us tomorrow, we would need to determine a daily interest rate = 6% / 360 = 0.00017

  • $100 given to us tomorrow = $100 / (1 + 0.00017)¹ = $99.98

since the amount of money is not that large and the interest rate is rather low, the difference in value is not that large. But imagine if you used a 24% interest rate instead of 6% (monthly interest rate = 2%)

  • $100 given to us in 30 days = $100 / (1 + 2%)¹ = $98.04
  • $100 given to us in 150 days = $100 / (1 + 2%)⁵ = $90.57
  • $100 given to us in 300 days = $100 / (1 + 2%)¹⁰ = $82.03

as the interest rate increases, the present value decreases.

5 0
3 years ago
Which is a solution to (x – 3)(x + 9) = –27?<br><br> x = –9<br> x = –3<br> x = 0<br> x = 6
likoan [24]

Answer:

x = 0

Step-by-step explanation:

Since the product is not equal zero, we need to multiply both parenthesis first:

(x-3)(x+9) =-27

x*x+x*9+(-3)*x+(-3)*9=27

x^2+9x-3x-27=27

x^2+6x-27=27

Add 27 from both sides:

x^2+6x-27+27=-27+27

x^2-6x=0

Factor x out:

x(x+6)=0

Apply the zero product:

x=0,x+6=0

x=0,x=-6

The solutions of the equation are x=0 and x=-6.

We can conclude that the correct answer is x = 0.

7 0
3 years ago
Other questions:
  • How do i substitute y=x to 3x+2y=20
    7·2 answers
  • If the sum of the measures of the interior angles a polygon is 1,620, how many sides does it have?
    8·1 answer
  • Bisi leaves 5km from school. She walks 1km at 4km/h and travels the rest of the way by bus at 16km/h . what is the average speed
    7·1 answer
  • Lexi 's bulletin board is 40 centimeters wide. Each of her ribbons is 4 centimeters wide, and her photos are 12 centimeters wide
    9·2 answers
  • PLEASE HELP ME ASAP I WILL GIVE YOU BRAINLIEST!
    9·1 answer
  • Write the equation of a line that is perpendicular to the given line that passes through the given point.
    11·1 answer
  • An amusement park sells child and adult tickets at a ratio of 3:1. On Saturday, they sold 63 adult tickets. How many child ticke
    7·1 answer
  • What is 3/4 of 76kg?
    7·2 answers
  • Manny borrowed $800 at 10% annual interest. How much interest did he owe in one year?
    12·1 answer
  • A printer takes 7 minutes to print a document with 63 pages. How many pages
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!