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3 years ago

Simplify: 2ab+2/2ab-2 a=1 and b=3

Mathematics

2 answers:

Mila [183]3 years ago

6 0

2(1)(3)+2/2(1)(3)-2=0

Nadusha1986 [10]3 years ago

3 0

Answer:

Step-by-step explanation:

a=1 and b=3

$\frac{2ab+2}{2ab-2}$

$\frac{2(1)(3)+2}{2(1)(3)-2}$

$\frac{6+2}{6-2}$

$\frac{8}{4} =\frac{2}{1} =2$

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Help and explain please!

Igoryamba

84, first you multiply and divide then you add

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2 years ago

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Given the vectors w = <-5, 3> and z = <1, 4>, find the results of the vector subtractions. -w − z = z − w = w − z =

liq [111]

Answer:

-w − z = <4, -7>

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Step-by-step explanation:

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2 years ago

In 10 mins. a heart beats 700 times.How many minutes will a heart beat 140 times?

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3 years ago

Help I cannot figure this question out.

netineya [11]

Answer:

B. x = -1 ± i

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

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

Algebra II

Imaginary Numbers: √-1 = i

Step-by-step explanation:

Step 1: Define

x² + 2x = -2

Step 2: Identify Variables

Rewrite Quadratic in Standard Form [Addition Property of Equality]: x² + 2x + 2 = 0
Break up Quadratic: a = 1, b = 2, c = 2

Step 3: Solve for x

Substitute in variables [Quadratic Formula]: $\displaystyle x=\frac{-2 \pm \sqrt{2^2-4(1)(2)}}{2(1)}$
[√Radical] Evaluate exponents: $\displaystyle x=\frac{-2 \pm \sqrt{4-4(1)(2)}}{2(1)}$
Multiply: $\displaystyle x=\frac{-2 \pm \sqrt{4-8}}{2}$
[√Radical] Subtract: $\displaystyle x=\frac{-2 \pm \sqrt{-4}}{2}$
[√Radical] Factor: $\displaystyle x=\frac{-2 \pm \sqrt{-1}\sqrt{4}}{2}$
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Divide: $\displaystyle x = -1 \pm i$

3 0

3 years ago

Please help with this ☝️

kipiarov [429]

The two angles (6x+4) and 32 degrees are complementary angles. They add to 90 degrees. The two angles are adjacent and form a right angle. The right angle marker is the square marker. Two adjacent right angles form a straight angle (180 degrees)

Add up the angles and set the sum equal to 90. Then solve for x
(6x+4) + (32) = 90
6x+4 + 32 = 90
6x+36 = 90
6x+36-36 = 90-36 .... subtract 36 from both sides
6x = 54
6x/6 = 54/6 ... divide both sides by 6
x = 9

Since x = 9, this means that
6x+4 = 6*9+4 = 54+4 = 58

So the missing angle is 58 degrees (note how 58+32 = 90)

5 0

3 years ago

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