2 years ago

Find the discriminant of the equation. x2 + 3x - 4 = 0 -7 25 -4 1

Mathematics

1 answer:

klemol [59]2 years ago

8 0

The Discriminant for the equation x2 + 3x - 4 = 0 would be 25.

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Evaluate this expression √9/225

abruzzese [7]

Answer: 281

Step-by-step explanation:

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3 years ago

Z2 + (2j – 3)z + (5 – j) = 0

BARSIC [14]

Answer:

2z+(2j-3)z+(5-j)=0

2z +2jz-3z+5-j=0

2z-3z+2jz-j=-5

-z+2jz-j=-5

2jz-z-j=-5

I hope this help

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2 years ago

Sara threw her math book off a building . The height of the book, seconds after being thrownis modeled by the equation below. Th

Vikentia [17]

Answer: 70 ft

Step-by-step explanation:

Given

height of book is measured by the function is

$h(x)=-5(x+2)(x-7)$

when the book is thrown $x=0$

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2 years ago

1/4 divided by 2/3 show work pls

NARA [144]

$\dfrac{1}{4}:\dfrac{2}{3}=\dfrac{1}{4}\cdot\dfrac{3}{2}=\dfrac{1\cdot3}{4\cdot2}=\boxed{\frac{3}{8}}$

5 0

3 years ago

There are 40 runners in a race. How many ways can the runners finish first, second, and third?

k0ka [10]

Answer:

117600

Step-by-step explanation:

50 x 49 x 48 = 117,600 ways

You have 50 possible for 1st, 49 for 2nd, 48 for 3rd

Permutations 50P3 = 117,600

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2 years ago