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
mestny [16]
3 years ago
12

Does anyone know how to do number 18????

Mathematics
1 answer:
AnnyKZ [126]3 years ago
3 0

Answer: angle ITU = 145 degrees

===============================================

Explanation:

Angle STU is the largest angle composed of the smaller angles STI and ITU.

In other words, the two smaller angles add up to the larger one.

(angle STI) + (angle ITU) = angle STU

( 20 ) + ( 12x+1 ) = 13x + 9

20+12x+1 = 13x+9

12x+21 = 13x+9

21-9 = 13x-12x

12 = x

x = 12

Using this x value, we find that,

angle ITU = 12x+1 = 12(12)+1 = 145 degrees

----------

As a side note,

angle STU = 13x+9 = 13(12)+9 = 165 degrees

This is confirmed with

(angle STI) + (angle ITU) = (20) + (145) = 165 = angle STU

You might be interested in
Mrs. Smith paid $6.60 for a dozen donuts. What is the cost per donut in dollars and cents?​
Mekhanik [1.2K]

Answer:

$1.81

Step-by-step explanation:

Dozen donuts cost 6.60 dollars

You will divide 12 by 6.60

you will get 1.81

8 0
3 years ago
Read 2 more answers
What is the scale factor? ( the answer must be a fraction).
MrRissso [65]
Since these are similar triangles you can use any two corresponding sides to figure out the scale factor.

Use the bottom side. Going from the first triangle to the second the scale factor is:
15/9 = 5/3
8 0
3 years ago
Solve y=.80x+100 based on bread machine costs 100. Ingredients for one loaf is .80 and what is the cost to make 50 loaves of bre
Ugo [173]
Substitute 50 loaves into the given equation

y= cost to make 50 loaves

y= 0.80x + 100
y= 0.80(50) + 100
multiply first, then add
y= 40 + 100
y= $140 cost to make 50 loaves

Hope this helps!
6 0
3 years ago
What two consecutive integers does 20−−√ fall between?
Alex_Xolod [135]

Answer:

4 and 5

Step-by-step explanation:

8 0
3 years ago
What if Scott bought 3 more stamps and now has 21 stamps? Some album pages have 1 stamp and some pages have 2 stamps. Show how m
Gnesinka [82]
So there are 8 different ways.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the slope of each line x=1
    6·1 answer
  • Is thus correct domain and range using interval notation?
    14·1 answer
  • Ok, last one I promise.
    10·1 answer
  • Thomas was selling tickets to his school play. The tickets cost $5.00 for adults and $2.00 for children. He sold 200 tickets and
    14·2 answers
  • Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The measure of angl
    9·2 answers
  • I need help with this
    10·2 answers
  • Please help and show work it helps a lot thanks
    9·1 answer
  • Leslie won 34 pieces of candy playing ring toss at the county fair. At school she gave one to every student in her math class. S
    13·1 answer
  • Natalie walked 3/5 miles in 1/2 hour . How fast did she walk, in miles per hour?
    13·1 answer
  • Find the length of mAB using the figure below<br> (please see photo)
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!