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3 years ago

How many triangles can be drawn with side lengths 3, 5, and 9?

Mathematics

1 answer:

prohojiy [21]3 years ago

7 0

Answer:

no triangle

Step-by-step explanation:

SOLUTION: No; . The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

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Solve -3x=2x^2-4 using quadratic formula

frozen [14]

Answer:

$x=-2.35078, 0.850781$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

Step-by-step explanation:

Step 1: Define equation

-3x = 2x² - 4

Step 2: Rewrite into Standard Form

0 = 2x² + 3x - 4

Step 3: Define variables

a = 2

b = 3

c = -4

Step 4: Find x

Substitute: $x=\frac{-3\pm\sqrt{3^2-4(2)(-4)} }{2(2)}$
Evaluate: $x=\frac{-3\pm\sqrt{9-4(2)(-4)} }{2(2)}$
Multiply: $x=\frac{-3\pm\sqrt{9+32} }{4}$
Add: $x=\frac{-3\pm\sqrt{41} }{4}$
Evaluate: $x=\frac{-3\pm6.40312}{4}$
Evaluate: $x=-2.35078, 0.850781$

And we have our final answer!

6 0

3 years ago

Identify the expression equivalent to 4x + x + 7) - 2x+8 - 4 by substituting x= 1 and x = 2. А. 6x + 11 B. 3(x+7) C. 2(3x + 16)

Alex

Answer:

4x + x + 7) - 2x+8 - 4 by substituting x= 1 and x = 2. А. 6x + 11 B. 3(x+7) C. 2(3x + 16) D. 3x + 16

Step-by-step explanation:

4 0

3 years ago

(16 – 8 ) x (10 + 4 ) + 8²

Ghella [55]

Hey there!

To solve for this given equation, you have to do is: PEMDAS.

PEMDAS means….

• Parentheses
• Exponents
• Multiplication
• Division
• Addition
• Subtraction

(You have to do it in that EXACT order or it will most likely mess up better understanding of the equation)

Now that we have information out of the way, we can answer the given question… shall we?

EQUATION:

(16 - 8 ) * (10 + 4 ) + 8^2

CAN CONVERT TO:

= (16 - 8)(10 + 4) + 8^2

SOLVING TO EASIER WAYS:

= (8)(14) + 8^2

= 8(14) + 8 * 8

= 8(14) + 64

= 112 + 64

SIMPLIFY IT:
= 176

Therefore, the answer should be: 176

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

3 0

3 years ago

Read 2 more answers

What is the value of the expression below when y = 7? y2+ 5y + 6

Aleksandr-060686 [28]

Plug in 7 for x and solve.

${y}^{2} + 5y + 6$

${(7)}^{2} + 5(7) + 6$

$49 + 35 + 6$

$90$

3 0

3 years ago

Help me answer these please will give brainlst

Gnoma [55]

Answer:

soooooooooooooooooooooooooooooooooooooooooooooooooooooooooorrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

Step-by-step explanation:

4 0

3 years ago