3 years ago

I need someone’s help !!

Mathematics

1 answer:

Vilka [71]3 years ago

3 0

I believe this is the answer to your problem.

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Choose the expression that represents a quadratic expression. 9x − 2 5x2 + 9x − 1 −2x3 + 8x2 − 7x + 1 x4 − 12x3 + 8x2 − 7x + 1

elena-s [515]

Answer:

$5 {x}^{2} + 9x - 1$

Step-by-step explanation:

A quadratic expresion is of the form

$a {x}^{2} + bx + c$

where

$a \ne0$

The give options are:

$9x-2$

$5{x}^{2}+9x - 1$

$-2x^3+8 {x}^{2} -7x +1$

$x^4-12x^3+8 {x}^{2} -7x +1$

From the given options, the only expression which is quadratic is

$5 {x}^{2} + 9x - 1$

where a =5, b=9 and c=-1

Therefore the correct choice is the second option.

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4 years ago

Josh rides his bike along a 9 mile trail. There are trail markers every 1/3 mile. The marker starts at 1/3 mile and ends at 9 mi

ValentinkaMS [17]

I think the answer is 27 because 9 x 3=27 so you have 27/3 which is equal to 9

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3 years ago

How Many times can 13 go into 44

Natali5045456 [20]

it can go in 3 times to this

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3 years ago

Olive buys music online, each song costs $2 plus $5 fee. She has no more than 40 dollars

Savatey [412]

Answer:

she can buy 27 songs online

Step-by-step explanation:

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3 years ago

Read 2 more answers

50 pounds to 35 pounds percentage of change

iVinArrow [24]

Answer:

30%

Step-by-step explanation:

<h2><u>Percentage change </u></h2><h3>formula :</h3>

$\frac{change}{origional} * 100$

= 50 - 35 = 15

= $\frac{15}{50}*100\\$

4 0

4 years ago