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2 years ago

What is a null set ?

Mathematics

1 answer:

forsale [732]2 years ago

7 0

The existence proof of the empty set is an absolute gem

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Does anyone know the answer to these problems if you know the answer for the first question then put 5. and your answer same goe

Anettt [7]

Number 5) A hill that rises 2 feet for every 10 feet of run. Because a longer run is not as steep as a short run.

Number 6) They all are parallel, they do not intersect.

6 0

2 years ago

What is this i'm very confused

snow_tiger [21]

Answer:

That's the symbol for pi

Step-by-step explanation:

8 0

1 year ago

Read 2 more answers

Solve. x2+5x−2=0 Enter your answers, as exact values, in the boxes. x = or x =

ziro4ka [17]

Answer:

$x=\frac{-5+\sqrt{33} }{2}$

$x=\frac{-5-\sqrt{33} }{2}$

Step-by-step explanation:

Using the quadratic formula in which a=1, b=5 and c=-2

$x_1=\frac{-b+\sqrt{b^{2}-4ac } }{2a} \\x_2=\frac{-b-\sqrt{b^{2}-4ac } }{2a}\\x_1=\frac{-5+\sqrt{5^{2}-4(1)(-2) } }{2(1)}\\x_1=\frac{-5+\sqrt{33} }{21}\\x_2=\frac{-5-\sqrt{25+8 } }{2}\\x_2=\frac{-5-\sqrt{33} }{2}$

4 0

3 years ago

What would the result be if a was increased by 25%

bezimeni [28]

Answer:

I believe you forgot a picture or something by the same lines

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

What is a quartic function with only the two real zeros given?

serious [3.7K]

Answer:

y = x^4 + 5x^3 + 5x^2 + 5x + 4

Step-by-step explanation:

Each of the latter three answers demonstrates one change of sign in its coefficients. According to Descarte's Rule of Signs, that means each of them has one positive real root. If there is a positive real root, the only two real roots will not be -4 and -1 (both negative).

The only viable option is the first one.

_____

There are other ways you can go at this. I like to let a graphing calculator show the zeros of functions of higher degree. Only the first function has only the two real roots given.

You can also evaluate each function or do synthetic division to see which polynomial has -1 or -4 as a root. Shown in the second attachment is the first function evaluated for x=-1.

4 0

2 years ago