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dezoksy [38]
3 years ago
15

A certain triangle has a 30° angle in a 60° angle. Which must be a true statement about the triangle

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
6 0

Answer:

It is a right triangle.

Step-by-step explanation:

A right triangle is a triangle with at least one angle with 90 degrees.

We know that every triangle has 180 degrees. The other unknown angle is 180 - (30+60) = 180 - 90 = 90. That means that the other angle is 90 degrees. Therefore, it is a right triangle

We also know that in this triangle, that the square of one side plus the square of another is side is equal to the square of the hypotenuse of the triangle. (According to Pythagorean theorem)

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What is the rate of Change of the line through (1,-3) and (0,-1)
andreyandreev [35.5K]

Answer:

m=-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

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (1, -3)

Point (0, -1)

<u>Step 2: Find slope </u><em><u>m</u></em>

Substitute in points into the slope formula to find rate of change

  1. Substitute [SF]:                    m=\frac{-1+3}{0-1}
  2. Add/Subtract:                      m=\frac{2}{-1}
  3. Divide:                                 m=-2
7 0
3 years ago
A streaming service charge $10 plus $1.25 per movie downloaded. You have
ch4aika [34]

Answer:

16

Step-by-step explanation:

30-10=20

20 divided by 1.25 = 16

8 0
2 years ago
What is 3 tenths multiplied by 100?
Tamiku [17]
.3 (100) = moving the decimal to the right 2 times because of the two zero's in '100'
So .3 (100)= 30
3 0
3 years ago
Yuri purchased 8 trees to have planted at his house. The store charged a delivery fee of $5 per tree.
satela [25.4K]
16 dollars each because you do 8x5 which equals 40 and do 168-40 which equals 128 / 8 equals 16
8 0
3 years ago
Read 2 more answers
A box contain 12 balls in which 4 are white 3 are blue and 5 are red.3 balls are drawn at random from the box.find the chance th
Anastasy [175]

Answer:

3/11

Step-by-step explanation:

From the above question, we have the following information

Total number of balls = 12

Number of white balls = 4

Number of blue balls = 3

Number of red balls = 5

We solve this question using combination formula

C(n, r) = nCr = n!/r!(n - r)!

We are told that 3 balls are drawn out at random.

The chance/probability of drawing out 3 balls = 12C3 = 12!/3! × (12 - 3)! = 12!/3! × 9!

= 12 × 11 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1/(3 × 2 × 1) × (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1)

= 220 ways

The chance of selecting 3 balls at random = 220

To find the chance that all the three balls are selected,

= [Chance of selecting (white ball) × Chance of selecting(blue ball) × Chance of selecting(red balls)]/ The chance/probability of drawing out 3 balls

Chance of selecting (white ball)= 4C1

Chance of selecting(blue ball) = 3C1 Chance of selecting(red balls) = 5C1

Hence,

= [4C1 × 3C1 × 5C1]/ 220

= 60/220

= 6/22

= 3/11

The chance that all three are selected is = 3/11

4 0
3 years ago
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