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insens350 [35]
4 years ago
6

How to I find a? It’s round to the nearest tenth.

Mathematics
1 answer:
Irina18 [472]4 years ago
7 0

Answer:

a ≈ 21.8

Step-by-step explanation:

We require the third angle in the triangle

Subtract the sum of the 2 angles from 180

third angle = 180° - (75 + 31.8)° = 180° - 106.8° = 73.2°

Using the Sine rule, that is

\frac{a}{sin73.2} = \frac{22}{sin75} ( cross- multiply )

a × sin75° = 22 × sin73.2° ( divide both sides by sin75° )

a = \frac{22sin73.2}{sin75} ≈ 21.8 ( to the nearest tenth )

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Expand and simplify the following:
Bogdan [553]

Answer:

Hope that this is helpful.

Step-by-step explanation:

-3(2x-1)^2+12x^2

= -3[(2x-1)(2x-1)]+12x^2

=-3[2x(2x-1)-1(2x-1)]+12x^2

=-3(4x^2-2x-2x+1)+12x^2

=-3(4x^2-4x+1)+12x^2

=-12x^2+12x-3+12x^2

=(-12x^2+12x^2) +12x-3

=0+12x-3

=12x-3

7 0
3 years ago
A sequence is defined by the recursive formula f (n 1) = f(n) – 2. if f(1) = 18, what is f(5)?
Marat540 [252]
Would assume:

f(n + 1) = f(n) - 2

f(2) = f(1 + 1) = f(1) - 2 = 18 - 2 = 16

<span>f(3) = f(2 + 1) = f(2) - 2 = 16 - 2 = 14
</span>
<span>f(4) = f(3 + 1) = f(3) - 2 = 14 - 2 = 12
</span>
<span>f(5) = f(4 + 1) = f(4) - 2 = 12 - 2 = 10
</span>
f(5) = 10
4 0
3 years ago
What is the equation of the line in standard form?
nordsb [41]

Here is my answer for you:

Graph each equation, until you find the one that lines up.

Below is a picture of all the equations on a graph.

Your answer is already in standard form, x-6y=-9.

8 0
3 years ago
Read 2 more answers
PLZZZZ SOMEONE NEED HELP!!!!!!
Paha777 [63]
The graph would shift 5 units left and 3 units up.
3 0
3 years ago
Help me with this answer dawg
Tanya [424]

Answer:

-7

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

Step-by-step explanation:

<u>Step 1: Define</u>

4x - 12 ≤ 16 + 8x

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

  1. Subtract 4x on both sides:                    -12 ≤ 16 + 4x
  2. Subtract 16 on both sides:                     -28 ≤ 4x
  3. Divide 4 on both sides:                          -7 ≤ x
  4. Rewrite:                                                   x ≥ -7

Here we see that any value <em>x</em> greater than or equal to -7 would work as a solution to the inequality.

∴ our answer is -7.

3 0
3 years ago
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