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3 years ago

A peice of fabric costs $5.29 a yard which is an estimated cost of 16.3 yards of fabric?

Mathematics

1 answer:

DerKrebs [107]3 years ago

6 0

Answer:

Step-by-step explanation:

$5.29 * 16.3 = $86.227

=$86.23

86.23 could be rounded up to 90

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Find all zeros of the polynomial P(x) = x3 − 2x2 − 3x + 10. Express any non-real roots in the form a + bi.

Strike441 [17]

Answer:

$x = - 2 \: or \: x = 2 - i \: or \: x = 2 + i$

Step-by-step explanation:

The given equation is

$p(x) = {x}^{3} - 2 {x}^{2} - 3x + 10$

We can see that:

$p( - 2) = {( - 2)}^{3} - 2 {( -2) }^{2} - 3( - 2)+ 10$

$p( - 2) = - 8- 8 + 6+ 10 = 0$

This means x=-2 is a zero of p(x).

From the long division in the attachment,

We can rewrite the polynomial as:

${x}^{3} - 2 {x}^{2} - 3x + 10 = (x + 2)( {x}^{2} - 4x + 5)$

We now find solution to the quadratic part:

${x}^{2} - 4x + 5 = 0$

This is given by:

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a}$

We plug in the values to get:

$x = \frac{ - - 4 \pm \sqrt{ {( - 4)}^{2} - 4 \times 1 \times 5} }{2 \times 1}$

$x = \frac{ 4 \pm \sqrt{ 16 - 20} }{2 }$

$x = \frac{ 4 \pm \sqrt{ - 4} }{2 }$

$x = \frac{ 4 \pm2i}{2 } \\ x = 2 \pm \: i \\ x = 2 - i \: or \: x = 2 + i$

Therefore all solutions are:

$x = - 2 \: or \: x = 2 - i \: or \: x = 2 + i$

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3 years ago

Plz answer this question I'll give brainliest to first person who answers.

Nadya [2.5K]

Answer: b I think

Step-by-step explanation:

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Step-by-step explanation:

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A collector has 180 movie posters and 100 band posters. She wants to sell 36 movie posters but still have her poster collection

vlada-n [284]

The word problem is based on division ratio so u have to divide by five so 100 divided by five is 20 meaning the collector has to sell 20 band posters.

6 0

3 years ago

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

klemol [59]

Answer:

wake up ur family members and pets inside the house and tell them the house is on fire. exit through the part where there isn't much fire. make sure u grab 3 items that u love the most quickly. make sure someone called 911. wait till the fire truck comes and watch ur house burn to the ground

Step-by-step explanation:

make sure u don't leave anyone behind because if u do they will burn and make sure u got a phone and grab 3 items ;)

hope this helps

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3 years ago