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
Lemur [1.5K]
3 years ago
14

Please help me with this and show your work...

Mathematics
1 answer:
inysia [295]3 years ago
6 0

9514 1404 393

Answer:

  25) 90°

  26) 85°

  27) 60°

  28) 80°

Step-by-step explanation:

In problems 25, 26, 28, the marked angles are adjacent interior angles, so have a sum of 180°. In problem 27, the marked angles are corresponding angles, so are congruent.

25) The two angles are equal, so each is 180°/2 = 90°.

__

26) (20x +5) +(24x -1) = 180

  44x = 176 . . . subtract 4, simplify

  x = 4 . . . . . . . divide by 44

  20(4) +5 = 85

The bold angle is 85°.

__

27) 6x = 5x +10

  x = 10

  6x = 60

The bold angle is 60°.

__

28) (x+109) +(x+89) = 180

  2x + 198 = 180 . . . . simplify

  2x = -18 . . . . . . . . . . subtract 198

  x = -9

  x+89 = -9 +89 = 80

The bold angle is 80°.

You might be interested in
Can anyone please help me find the length of X? <br>​
Alex_Xolod [135]

Solution:

<u>Note that:</u>

  • 2(Perimeter of smaller triangle) = Perimeter of larger triangle

<u>Using the perimeter of the smaller triangle, solve for x.</u>

  • 2(Perimeter of smaller triangle) = Perimeter of larger triangle
  • => 2(3.5 + x + h) = 7 + 4 + 2h
  • => 7 + 2x + 2h = 7 + 4 + 2h
  • => 2x = 4
  • => x = 2

The length of x is 2 units.

8 0
2 years ago
You build and sell toy cars for $36 each. So far, you have built 25 toy cars. How many more toy cars will you have to build and
chubhunter [2.5K]
If you have built 25 cars, and they are 36 dollars per, then multiply 25 and 36 for the amount of money.  This will result with 25*36=900.  Since we already have 900 dollars worth, we subtract that from the goal of 1620, leaving us with 1620-900=720.  Now, divide this by the price per car for the amount of cars needed to get to this goal. 720/36=20 cars

Hope this helps!
6 0
3 years ago
Read 2 more answers
(2a-b)2-(a-2b)2 factorial
kvasek [131]

Hello, we know that for a and b real numbers

a^2-b^2=(a-b)(a+b)

So,

(2a-b)^2-(a-2b)^2=(2a-b-a+2b)(2a-b+a-2b)\\\\=(a+b)(3a-3b)\\\\\boxed{=3(a+b)(a-b)}

Thank you.

7 0
3 years ago
center city has a population of twenty one thousand seventy people write the population in standard form
NISA [10]
The standard form is 20000 + 1000 + 70
3 0
3 years ago
I don’t Understand this who can help me
harina [27]

Step-by-step explanation:

The area of a square is

{s}^{2}

where s is the side length.

It is given that the smaller square side length is s so that means the area of that smaller square is the formula above.

The longer square is twice the side length of the side length of the smaller square.

Since all squares have equal sides, that means all the side are twice than the smaller square sides.

We can represent that larger square area by

(4s) squared

To find how many smaller squares it would take to fill the larger square divide the formula by each other.

(4s)÷s squared =4

3 0
3 years ago
Other questions:
  • Tia made a scale drawing of the White House for her history project. The actual length of the building is 168 feet, and its widt
    13·2 answers
  • How can you solve an equation with the variable on both sides plz help
    5·1 answer
  • Angles ∝ and β are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of ∝
    15·1 answer
  • Your grandmother is in the hospital and is put on a liquid diet. After examining her chart, a mistake is found stating that her
    9·1 answer
  • -8d - 5d +7d=72 what is the answer i am completely lost
    8·1 answer
  • Câu 1: Giả sử, có số liệu tối đa hai mặt hàng chuối và táo mà Việt Nam và Trung Quốc có thể sản xuất được trong điều kiện sử dụn
    10·1 answer
  • Evaluate 81.4 % of 58.81 km Give your answer rounded to 2 DP.
    5·1 answer
  • Emily and Zach read a total of 32 books in four months. Emily read 12 books. Which equations
    7·2 answers
  • Suppose a plane is flying at an altitude of 32,200 feet two minutes after the start of its descent. Ten minutes after the start
    14·2 answers
  • How many solutions does this system have?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!