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timama [110]
3 years ago
9

How do I solve 3x(4x-15)

Mathematics
1 answer:
inna [77]3 years ago
7 0
3x(4x - 15) < Given
12x^2 - 45x < Distributive law of property

By the way, you are simplifying not solving. You solve equations and simplify expressions.

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7.63 repeating as a fraction
Katyanochek1 [597]

Answer:

763/100 is the answer to this

3 0
3 years ago
Okay so I'm working on solving equations<br><img src="https://tex.z-dn.net/?f=%20-%2015x%20%2B%205%20%3D%20%20-%2010x%20%2B%2025
Ksenya-84 [330]

Answer:

x = -4

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>

-15x + 5 = -10x + 25

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

  1. Add 15x on both sides:                    5 = 5x + 25
  2. Subtract 25 on both sides:              -20 = 5x
  3. Divide 5 on both sides:                   -4 = x
  4. Rewrite:                                             x = -4
8 0
2 years ago
Your favorite cookie contains 10 grams of fat. If you eat no less than 4 cookies and no more than 7 cookies, how many grams of f
Sergio039 [100]

Well, if each cookie contains 10g of fat, then...

4 cookies = 4*10 = 40g fat

7 cookies = 7*10 = 70g fat

I can only eat 4 to 7 cookies. So that means I had between 40 and 70 grams of fat.

Answer: a. Between 40 and 70 grams.

6 0
3 years ago
HELP ME PLEASE!!! MATHEMATICS
sukhopar [10]
By Pythagoras  AB^2 = 12^2 - 6^2 =  108

AB = sqrt 108 = 10.39 to nearest hundredth

The perpendicular from M to DC will be parallel and equal to AB so  it = 10.39.

Also  AB^2 = CB * DB

108  =  6 * DB
DB = 108/6  = 18
so DC = 18-6 = 12

MD^2 = (1/2*12)^2 + 108  =   144

so MD = 12
5 0
3 years ago
write the equation in standard form of the function with x intercepts at (4,0) and (-2,0) that has been reflected across the x a
Anastaziya [24]

answer

-3x^{2} +6x + 24

explanation

since there are 2 x-intercepts, the lowest degree the function could possibly have is 2, so this could be the graph of a parabola

since our zeros are at x = 4 and x = -2, our factors are (x - 4) and (x + 2)

our equation so far is

(x - 4)(x + 2)

= x^2 -4x + 2x - 8

= x^{2} -2x - 8

since the function is reflected across the x-axis, multiply the equation by -1

-(x^{2} -2x - 8)

= -x^{2} +2x + 8

since the function has a vertical stretch of 3, multiply the equation by 3

3(-x^{2} +2x + 8)

= -3x^{2} +6x + 24

3 0
3 years ago
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