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2 years ago

Help me please Select the correct answer. What is the product of

Mathematics

2 answers:

Aleksandr-060686 [28]2 years ago

7 0

Answer: It's A. -7.

Step-by-step explanation: I've attached an Image of my work.

Darya [45]2 years ago

3 0

Answer:

A. -7

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define expression

$(\frac{7}{8} )(-16)(-7)(\frac{-1}{14} )$

Step 2: Evaluate

Multiply: $(\frac{-112}{8}) (-7)(\frac{-1}{14} )$
Multiply: $(\frac{784}{8})(\frac{-1}{14} )$
Multiply: $\frac{-784}{112}$
Divide: $-7$

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Answer:

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Step-by-step explanation:

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2 years ago

What is 2/12 times 1/12

xenn [34]

1/72 is your answer. Hope this helps!

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2 years ago

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In this problem, x = c1 cos t + c2 sin t is a two-parameter family of solutions of the second-order DE x'' + x = 0. Find a solut

Norma-Jean [14]

Differentiate the given solution:

$x=C_1\cos(t)+C_2\sin(t) \implies x'=-C_1\sin(t)+C_2\cos(t)$

Now, given that x (π/4) = √2/2 … (I'm assuming there are symbols missing somewhere) … you have

$\dfrac{\sqrt2}2=C_1\cos\left(\dfrac\pi4\right)+C_2\sin\left(\dfrac\pi4\right)$

$\implies\dfrac1{\sqrt2} = \dfrac{C_1}{\sqrt2}+\dfrac{C_2}{\sqrt2}$

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Similarly, given that x' (p/4) = 0, you have

$0=-C_1\sin\left(\dfrac\pi4\right)+C_2\cos\left(\dfrac\pi4\right)$

$\implies 0=-\dfrac{C_1}{\sqrt2}+\dfrac{C_2}{\sqrt2}$

$\implies C_1=C_2$

From this result, it follows that

$C_1+C_2=2C_1=1 \implies C_1=C_2=\dfrac12$

So the particular solution to the DE that satisfies the given conditions is

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2 years ago

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Aleksandr [31]

Answer:

Step-by-step explanation:

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2 years ago

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Ostrovityanka [42]

Answer:

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Step-by-step explanation:

There are four equal parts and since the spinner is unbiased, the probabilities will be equal.

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2 years ago