3 years ago

HELP PLZ

Mathematics

1 answer:

cluponka [151]3 years ago

5 0

What is it that your asking? There’s no answer hooves

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The model represents x2 – 9x + 14.

Stels [109]

Factorize the quadratic trinomial $x^2 - 9x + 14$ by the rule:

$ax^2+bx+c=a(x-x_1)(x-x_2), \text{ where } x_1,\ x_2 \text{ are its roots. }$

1. Find the roots:

$D=(-9)^2-4\cdot 14=81-56=25,\ \sqrt{D}=5,\\ \\ x_1=\dfrac{9-5}{2}=2,\ x_2=\dfrac{9+5}{2}=7.$

2. Factorize the polynomial:

$x^2 - 9x + 14=(x-2)(x-7).$

3. Only factor x-2 is given in options, then the correct choice is B.

6 0

3 years ago

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Helppppppoppp please 10 points !!!

Evgesh-ka [11]

Answer:

2x+27+x+27=180

3x+54=180

3x=180-54

x=126/3

x=42

angle B=x+27

=42+27

=69 degree

Step-by-step explanation:

7 0

2 years ago

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Melodys family wants to go to Hawaii, which is a 3,700 mile airplane ride. Write the number of miles in scientific notation

jenyasd209 [6]

Answer:

$3.7*10^3$

Step-by-step explanation:

Step one:

given data

3,700 mile

In scienctific notation or in standard form 3,700 mile is expressed as

$3.7*10^3$

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3 years ago

Helppppppppppppp pleaseeeeeeeeeeeee

kow [346]

Answer:

the one on the right y=4x

Step-by-step explanation:

even if u switch out x it will yeah

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Which interval has the most students? 0-4 5-9 10-14 15-19

-Dominant- [34]

The answer is 0-4 it has more

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3 years ago

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