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3 years ago

6

Write an expression of that is equivalent to 7/8

1 answer:

adell [148]3 years ago

3 0

3/8 + 1/2 hope that helps!

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Line l and Line m are parallel lines that have been rotated 180°. The resulting images are show as l' and m'. How can you descri

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They would be B parallel lines

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2 years ago

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Which expression gives the area of the triangle shown below

cestrela7 [59]

Answer: 1/2cx B

Step-by-step explanation

area is height multiplied by base so x times c /2= 1/2cx

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1 year ago

Is (6, 2) a solution to this system of equations? x + 4y = 14 2x + 4y = 20

uranmaximum [27]

No it’s not because (6,2) would be a no solution so no

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2 years ago

What is the solution set of x2 + 5x + 1 = 0?

DerKrebs [107]

Answer:

$\huge\boxed{\left\{-\dfrac{5+\sqrt{21}}{2};\ \dfrac{-5+\sqrt{21}}{2}\right\}}$

Step-by-step explanation:

$x^2+5x+1=0\\\\\text{Use the quadratic formula:}\\\\\text{For}\ ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\\text{if}\ \Delta < 0,\ \text{then the equation has no real solution}\\\text{if}\ \Delta=0,\ \text{then the equation has one real solution}\ x=\dfrac{-b}{2a}\\\text{if}\ \Delta>0,\ \text{then the equation has two real solution}\ x=\dfrac{-b\pm\sqrt{\Delta}}{2a}$

$\text{We have}\\\\a=1,\ b=5,\ c=1\\\\\Delta=5^2-4(1)(1)=25-4=21>0\\\\x=\dfrac{-5\pm\sqrt{21}}{2(1)}=\dfrac{-5\pm\sqrt{21}}{2}$

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3 years ago

What's the 4's in 4,400

Vesnalui [34]

There are two so I'll give you the answer to both! 4,000 and 400

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