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
pshichka [43]
3 years ago
12

What is the value of x?

Mathematics
1 answer:
Firlakuza [10]3 years ago
8 0

(10 + 3x)° + (x - 30)° = 180°

(3x + x)° + (10 - 30)° = 180°

4x° - 20° = 180°

4x° = 180° + 20°

4x° = 200°

x° = 200/4

x° = <u>50°</u>

So, the value of x is 50°

<em>Hope it helps and is useful</em><em> </em><em>:</em><em>)</em>

You might be interested in
How can mental math help you find solutions to inequalities?
shepuryov [24]

Answer:

There are many examples the basics are also easy to remember.

Step-by-step explanation:

We can input these for the following equation.

x > 5

(x is greater than 5)

Then compare to - x < 5

(minus x is less than 5)

We try a sum

3x -2 ≤ 1

we can then balance subtract -2

3x ≤ -1

then divide by 3

x= -1 /3

We try another value

3x -2 ≤ 0

1 ≤ 3x

1/3 ≥ x

We can check that each equality fits and alter the number accordingly.

For the first one we are saying it is no greater than 1

For the second we say it is greater than zero.

We are able to prove both have the answer.

Just like when we look for negative percentages and count down we record this as we count in mental math.

7 0
3 years ago
Jaun earns $11 per house and works at most $30 hours per week identify the independent and dependent quantity in this situation
pantera1 [17]
$11 is the independent and the $30 is dependent because to get the $30 a week, it depends on that $11 per house.
7 0
3 years ago
Constance invested $4000 for 3 years in a savings account paying simple interest with a yearly interest rate of 3.5%. How much s
castortr0y [4]
To solve this problem you might have to use this formula y=a(1+r)^t A=amount of money you already have 1= a set number R= rate T= time  YOUR GIVENS ARE: A=4000 R= 3.5% (0.035) decimals T= 3 years NOW lets plug IN everything in the FORMULA y=4000(1+.035)^3= $4434.87. NOW lets subtract 4000-4434=434. She earned $434 of simple interest.
7 0
3 years ago
Read 2 more answers
The area of a trapezium is 35 cm² and the distance between its parallel sides is 16 cm. if one of the parallel is of length 25 c
Furkat [3]

Answer:

No solution

Step-by-step explanation:

A = (b1 + b2)h/2

A = 35 cm²

h = 16 cm

b1 = 25 cm

b2 = ?

35 = (25 + b2)(16)/2

70 = (25 + b2)(16)

70 = 400 + 16b2

16b2 = 330

b2 = 330/16 = -20.625

The answer is a negative number. Since the base of a trapezium cannot have a negative length, there does not exist a trapezium with the given information.

3 0
3 years ago
To ensure he never eats the whole cake, Bobby only decides to eat half of what’s left for each serving. If 2/3 of the cake are l
siniylev [52]
1st serving: 2/3 * 1/2 = 2/6 or 1/3
2nd serving: 1/3 * 1/2 = 1/6
3rd serving: 1/6 * 1/2 = 1/12
4th serving: 1/12 * 1/2 = 1/24
5th serving: 1/24 * 1/2 = 1/48

1/3 + 1/6 + 1/12 + 1/24 + 1/48 
1/3 * 16/16 = 16/48
1/6 * 8/8 = 8/48
1/12 * 4/4 = 4/48
1/24 * 2/2 = 2/48
1/48 * 1/1 = 1/48

16/48 + 8/48 + 4/48 + 2/48 + 1/48 = 31/48

Bobby ate 31/48 of the cake in total.
4 0
3 years ago
Other questions:
  • 2. The Soccer Club is selling T-shirts and washing cars to raise money for a summer trip. Last week, the club raised $292.50 by
    6·1 answer
  • In a Match 6 Lotto, winning the jackpot requires that you select six different numbers from 1 to 49, and that the same six numbe
    9·1 answer
  • What is : 50% of $500,000
    5·2 answers
  • Patty made a banner that has an area of 36 square inches,. The length and width of the banner are whole numbers. The length is 4
    13·2 answers
  • A can of soda is placed inside a cooler. As the soda cools, its temperature T(x)
    15·1 answer
  • A candle burned at a steady rate. After 37 minutes, the candle was 11.2 inches tall. Eighteen minutes later,
    11·1 answer
  • A man fell asleep studying for his math exam. He woke up at 9:30 p.m. If he slept for 3 hours and 50 minutes, what time did he f
    6·2 answers
  • 4. A mountain climber needs to descend 2,000 feet.
    13·1 answer
  • Can someone help. Write a word problem about equal groups and act it out to solve
    12·1 answer
  • The least common multiple of two whole numbers is 12. What is the ratio of the greater number to the lesser number is 3:2 what a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!