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3 years ago

Tractice writing as a qua

Mathematics

1 answer:

Firlakuza [10]3 years ago

3 0

Answer:

z = 3x+2
z^2 +7z -8 = 0

Step-by-step explanation:

Define ...

z = 3x+2

Substitute for that expression in the given quadratic:

z^2 +7z -8 = 0 . . . . . . your equivalent quadratic

_____

This equation is easily solved by factoring:

(z +8)(z -1) = 0

z = -8 or +1

Then x can be found from z:

(z -2)/3 = x

(-8 -2)/3 = x = -10/3

(+1 -2)/3 = x = -1/3

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F(x)=(2x-1)(x-5) find all zeros

Sergio039 [100]

Answer:

x = 5 and x = $\frac{1}{2}$

Step-by-step explanation:

To find the zeros equate f(x) to zero, that is

(2x - 1)(x - 5) = 0

equate each factor to zero and solve for x

2x - 1 = 0 ⇒ x = $\frac{1}{2}$

x - 5 = 0 ⇒ x = 5

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3 years ago

Read 2 more answers

Question number 3 pls

marissa [1.9K]

Factoring f(x) would give a factor (x-1-2i), so you can divide f(x) by this, leaving (x-3)(x+4)(x-1+2i), so the other roots are:

x=3
x=-4
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3 years ago

How tall is the tree? 5ft 35° -20ft- [? ]ft

SVEN [57.7K]

Answer:

$\boxed{\bf 19ft}$

Step-by-step explanation:

$\bf tan\:\theta =\cfrac{opp}{adj}$

$\bf tan(35^o)=\cfrac{x}{20}$

$\bf 20\;tan (35^o)=x$

$\bf 14ft=x$

The height of the tree:-

$\bf x+5ft$

$\bf 14ft+5ft$

$\bf 19ft$

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2 years ago

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Kailey exercises for 45 minutes three days a week and 30 minutes two days a week. How many minutes will she need to exercise on

GuDViN [60]

Answer:

150 minutes

Step-by-step explanation:

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2 years ago

A parallelogram with congruent diagonals is a _____.

Advocard [28]

An example of a parallelogram with congruent diagonals is a square.

Hope this helps =)

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3 years ago