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Marizza181 [45]
3 years ago
5

ALGEBRICAL EXPRESSIONS SIMPLIFY(7x+8y)² - (7x-8y)²​

Mathematics
1 answer:
Rzqust [24]3 years ago
4 0

Step-by-step explanation:

hope it helps you

mark me as brainliest

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Please help me thank youuuuuu
xenn [34]
First, find the arc measure BD. The arc measure is twice the central angle measure. BD should be 48*2 = 96.

The chord BC looks like it’s the diameter of the circle, so it must have a measure of 180.

From here you can find DC. The total measure of a circle is 360.
360- 96-180 = 84, so DC is 84.

DBC is 360- DC
so 360- 84 = 276.

DCB is just 360- BD
so 360- 96 = 264.
Hope this helps!
8 0
3 years ago
Given J(1, 1), K(3, 1), L(3, -4), and M(1, -4) and that J'(-1, 5), K'(1, 5), L'(1, 0), and M'(-1, 0). What is the rule that tran
anastassius [24]
(x; y) -> (x - 2; y + 4)

J(1; 1) ⇒ J'(1 - 2; 1 + 4) = (-1; 5)

K(3; 1) ⇒ K'(3 - 2; 1 + 4) = (1; 5)

L(3;-4) ⇒ L'(3 - 2; -4 + 4) = (1; 0)

M(1;-4) ⇒ M'(1 - 2;-4 + 4) = (-1; 0)


5 0
3 years ago
Y = 4x – 18<br> y = -5x +9
adelina 88 [10]

Answer:

(3, -6)

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
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Terms/Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = 4x - 18

y = -5x + 9

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

<em>Substitution</em>

  1. Substitute in <em>y</em> [2nd Equation]:                                                                           4x - 18 = -5x + 9
  2. [Addition Property of Equality] Add 5x on both sides:                                   9x - 18 = 9
  3. [Addition Property of Equality] Add 18 on both sides:                                   9x = 27
  4. [Division Property of Equality] Divide 9 on both sides:                                  x = 3

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x</em> [1st Equation]:                                                                           y = 4(3) - 18
  2. Multiply:                                                                                                             y = 12 - 18
  3. Subtract:                                                                                                            y = -6
5 0
2 years ago
Read 2 more answers
Jon treated his sister to lunch while visiting her in Silvergrove. Their lunch cost $75, and the
aniked [119]
The answer:93.75

I think recommend calculators online I’m sure I’m a little off
6 0
2 years ago
3 is 15% of what number
vazorg [7]
Use the rule of 3 simple 

x mean 100%
3 mean 15%
-------------------
 x = 3*100/15 = 300/15 = 20

hope this will help you 
6 0
3 years ago
Read 2 more answers
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