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balandron [24]
3 years ago
11

Dimitri drew a right angle. Then he drew an angle that was 20 degrees larger. What is the measure of the second angle Dimitri dr

ew?
Mathematics
2 answers:
borishaifa [10]3 years ago
7 0
180-90-20

that equals 70 degrees

the third angle is 70
stealth61 [152]3 years ago
6 0
A right angle is 90 degrees so 90 plus 20 would equal 110
Answer: 110 degrees
You might be interested in
A square piece of paper has an area of x2 square units. A
Dmitry_Shevchenko [17]

Answer:

Length of rectangular strip = 12

area of rectangular strip =   2*12 = 24

Area of square =  x^2 = 12^2 = 144

Step-by-step explanation:

Area of square x^2

area of rectangle is given by length * width

Length of rectangular strip = x

width of rectangular strip = 2

area of rectangular strip =  length * width = 2*x = 2x

Area of square piece of paper when  rectangular strip is taken away from it

= Area of square - area of rectangular strip

= x^2 -2x

It is given that Area of square piece of paper when  rectangular strip is taken away from it is 120 square units.

Thus,

x^2 -2x = 120\\=> x^2 -2x -120 = 0\\=> x^2 -12x +10x-120\\=> x(x-12) +10(x-12)\\=> (x+10)(x-12) = 0\\\\

Thus,

either x+10 = 0 or x -12= 0

x = -10 or x = 12

but length cannot  be negative hence neglecting x = -10

hence value of x is 12.

Hence,

Length of rectangular strip = 12

area of rectangular strip =   2*12 = 24

Area of square =  x^2 = 12^2 = 144

5 0
3 years ago
Janet wants to plant a square flower garden in her yard. She has enough topsoil to cover an area of 30 square feet. How long can
gregori [183]
It can be at least 5.4 feet long since the area of a square is A=s^2. 5.4 times 5.4 is 30
6 0
3 years ago
PLEASE HELP !!!
kobusy [5.1K]
Help with what. Hahahaha
7 0
3 years ago
What is the solution to 0.4(12 – 3x) = 0.3(12x – 16)?
TiliK225 [7]

Answer:

x = 2

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Step-by-step explanation:

<u>Step 1: Define</u>

0.4(12 - 3x) = 0.3(12x - 16)

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Distribute:                                4.8 - 1.2x = 3.6x - 4.8
  2. Add 1.2x on both sides:          4.8 = 4.8x - 4.8
  3. Add 4.8 on both sides:           9.6 = 4.8x
  4. Divide 4.8 on both sides:       2 = x
  5. Rewrite:                                   x = 2
8 0
3 years ago
-2x+5/2= 17
Alenkinab [10]
No the answer is 5x because simply then,add x

3 0
3 years ago
Read 2 more answers
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