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2 years ago

5/8 + 7/12 A 1/2 B 5/24 C 1 5/24

Mathematics

2 answers:

Dimas [21]2 years ago

6 0

The answer is actually 116/96

vekshin12 years ago

4 0

Step-by-step explanation:

The answer is not in the option.

The answer is 29/24.

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Two times a number plus four is 22. What is the number

LiRa [457]

Use the expression to solve for the number.

2n + 4 = 22
2n = 22 - 4
2n = 18
n = 18/2
n = 9

The number is 9.

Hope this helps :)

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3 years ago

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The function f(x)=−3x+2 is defined over the domain −1

DENIUS [597]

Answer:

Yes.

Step-by-step explanation:

$f\left(x\right)=-3x+2$

$f\left(-1\right)=-3(-1)+2$

$y=f(-1)=5$

The domain of this function is all Real numbers $\:\left(-\infty \:,\:\infty \:\right)$

$\{x \in \mathbb{R}: -\infty \:$

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2 years ago

Which of the following fractions is the largest? A. 10/13 B. 11/14 C. 14/15 D. 17/18

larisa [96]

The one with the highest numerator and denominator. 17/18

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3 years ago

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Use the Quadratic Formula to solve the equation 4x^2−7=4x.

tino4ka555 [31]

Answer:

$\large\boxed{x=\dfrac{1}{2}-\sqrt2\ or\ x=\dfrac{1}{2}+\sqrt2}$

Step-by-step explanation:

$\text{The quadratic formula of}\ ax^2+bx+c=0:\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\text{We have:}\\\\4x^2-7=4x\qquad\text{subtract}\ 4x\ \text{from both sides}\\\\4x^2-4x-7=0\\\\a=4,\ b=-4,\ c=-7\\\\b^2-4ac=(-4)^2-4(4)(-7)=16+112=128\\\\\sqrt{b^2-4ac}=\sqrt{128}=\sqrt{64\cdot2}=\sqrt{64}\cdot\sqrt2=8\sqrt2\\\\x=\dfrac{-(-4)\pm8\sqrt2}{(2)(4)}=\dfrac{4\pm8\sqrt2}{8}\qquad\text{simplify by 4}\\\\x=\dfrac{1\pm2\sqrt2}{2}\to x=\dfrac{1}{2}\pm\sqrt2$

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3 years ago

What is 31=xy+15? for segment addition

kati45 [8]

Answer:

x = 16/y

y =16/x

Step-by-step explanation:

31=xy+15

subtract 15 from both sides of the equation:

xy = 16

x = 16/y

y =16/x

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2 years ago