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GuDViN [60]
3 years ago
11

Factor completely 4x2-1

Mathematics
2 answers:
Over [174]3 years ago
7 0

Answer:

7

Step-by-step explanation:

artcher [175]3 years ago
3 0

Answer:

7

Step-by-step explanation:

First, multiply 4 by 2 to get 8

Then, subtract 1 from 8 to get 7

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X-5y= -40<br> 18x - 5y = 45<br> What is the answer to this
baherus [9]

Answer:

(5, 9)

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

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

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

x - 5y = -40

18x - 5y = 45

<u>Step 2: Rewrite Systems</u>

18x - 5y = 45

  1. Multiply both sides by -1:                     -18x + 5y = -45

<u>Step 3: Redefine Systems</u>

x - 5y = -40

-18x + 5y = -45

<u>Step 4: Solve for </u><em><u>x</u></em>

<em>Elimination</em>

  1. Combine equations:                    -17x = -85
  2. Divide -17 on both sides:             x = 5

<u>Step 5: Solve for </u><em><u>y</u></em>

  1. Define equation:                    x - 5y = -40
  2. Substitute in <em>x</em>:                       5 - 5y = -40
  3. Isolate <em>y</em> term:                        -5y = -45
  4. Isolate <em>y</em>:                                 y = 9
4 0
2 years ago
Please help meeeee!!
Xelga [282]

Answer:

-27

Step-by-step explanation:

order of operations 2÷2 = 1 +53 =54

3x1 = 3 -5 = -2

54÷-2 = -27

5 0
2 years ago
Josh had 4 five-dollar bills. Then his grandfather gave him 1 ten-dollar bill How much money does Josh have now?​
WARRIOR [948]

Answer:

30 dollars

Step-by-step explanation:

4(5) + 10 = 20 + 10 = 30

7 0
3 years ago
Read 2 more answers
How many degrees has been rotated counterclockwise about the origin? A. 90 B. 360 C. 180 D. 270
Vinil7 [7]

Answer:

A - 270°

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please help fast! A=?
MrMuchimi

Answer: 77 degrees

Step-by-step explanation:

By the law of sines,

\frac{\sin 13^{\circ}}{6}=\frac{\sin A}{26}\\\sin A=\frac{26 \sin 13^{\circ}}{6}\\A=\sin^{-1} \left(\frac{26 \sin 13^{\circ}}{6} \right) \approx 77^{\circ}

7 0
2 years ago
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