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
soldier1979 [14.2K]
3 years ago
7

HELP IS MUCH NEEDED :)

Mathematics
2 answers:
ElenaW [278]3 years ago
5 0
∠ADC = 112°
∠ADC =6x + 7 + 12x - 3

Equate both:
6x + 7 + 12x - 3 = 112

Solve for x :
6x + 7 + 12x - 3 = 112

Combine like terms:
18x + 4= 112

Take away 4 from both sides:
18x = 108

Divide both sides by 18:
x = 6

Find ∠ADB:
6x + 7 = 6(6) + 7 = 43


Answer: ∠ADB = 43°

Elena L [17]3 years ago
4 0
If m∠ABC = 112°, then m∠ADB + m∠BDC must equal 112°.

Make m∠ADB + m∠BDC = 112.

6x + 7 + 12x - 3 = 112
18x + 4 = 112
18x = 108
x = 6

Now plug x into 6x + 7 to find m∠ADB.

6(6) + 7 = 43

m∠ADB = 43°
You might be interested in
What two numbers added together equal 6, but when multiplied equals 5.
makvit [3.9K]
1, 5 is the answer to the equation, 1+5=6 1x5=5
4 0
3 years ago
Read 2 more answers
Given points A(−2,0), B(−5,3), C(−9,−1), P(7,6), Q(4,0), and R(−4,4), which of the following proves that △ABC~△PQR?
UNO [17]

Based on the SSS similarity theorem, △ABC ~ △PQR because AB/PQ = BC/QR = CA/RP = √2/√5 = √10/5 (option D).

<h3>The SSS Similarity Theorem</h3>

Two triangles having three pairs of sides that are proportional can be proven to be similar by the SSS similarity theorem.

If the triangle ABC and triangle PQR are similar, their corresponding sides will be proportional, meaning that: AB/PQ = BC/QR = CA/RP.

Therefore, using the distance formula, d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}, the sides of each triangle is found.

Therefore, it shows that:

AB/PQ = BC/QR = CA/RP = √2/√5 = √10/5

Therefore, based on the SSS similarity theorem, △ABC ~ △PQR because AB/PQ = BC/QR = CA/RP = √2/√5 = √10/5 (option D).

Learn more about the SSS similarity theorem on:

brainly.com/question/4163594

7 0
3 years ago
A bookstore packs six books in a box the total weight of the books is 14 1/4 pound each book has the same weight what is the wei
Charra [1.4K]
The weight of one book would be 2.375.
6 0
4 years ago
If 9 is added to twice a number and this sum is multiplied by 6​, the result is the same as if the number is multiplied by 5 and
Alexxx [7]
Let's represent that number as X:
6(9+2X) = 5X + 12
54 + 12X = 5X + 12
7X = -42
X = -6
8 0
3 years ago
What is 56 divided by 19
tresset_1 [31]
2.947368421 when dividing you want to make sure te numbers are divisible <span />
5 0
4 years ago
Read 2 more answers
Other questions:
  • Which of the following pairs of functions are inverses of each other?
    7·2 answers
  • A tire store arranged its tires in rows from the most expensive tires to the lowest price. A set of tires from the first row cos
    7·1 answer
  • Perry wants to find the decimal equivalent of 19/3, so he divides. Study Perry’s work shown here and then answer the questions b
    10·2 answers
  • Reduce the following algebraic expressions: <br> 9x-(7x-5)-8(6x-2)
    14·1 answer
  • Determine the decision criterion for rejecting the null hypothesis in the given hypothesis test. Describe the values of the test
    10·1 answer
  • Pls help i will give brainliest!!
    15·2 answers
  • write the number below as an addition expression in three different ways, including expanded notation . 37,917,545 ?
    12·1 answer
  • If a submarine descends to the ocean floor which is 2,100 feet below sea level in 3 hours, what is the rate of descent?
    14·1 answer
  • What is the answer to this question?
    10·1 answer
  • How would i find the volume
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!