2 years ago

HELP PMEASR GCF show work!! 20 points

Mathematics

1 answer:

damaskus [11]2 years ago

5 0

It’s either just 2xy or it’s 2xy(x+2)(x-4)

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What is the equation of a parabola in vertex form for a line that passed through (5,-4) and has vertex (-2,5)

Ahat [919]

$\text{The vertex form of a parabola}\\\\y=a(x-h)^2+k\\\\\text{We have the vertex}\ (-2,\ 5)\to h=-2,\ k=5.\\\\\text{Substitute}\\\\y=a(x-(-2))^2+5=a(x+2)^2+5\\\\\text{We have the point}\ (5,\ -4).\\\text{Substitute the coordinates of the point to the equation:}\\\\-4=a(5+2)^2+5\\\\-4=a(7)^2+5\\\\-4=49a+5\qquad|-5\\\\-9=49a\qquad|:49\\\\a=-\dfrac{9}{49}\\\\Answer:\ \boxed{y=-\dfrac{9}{49}(x+2)^2+5}$

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3 years ago

HELP!!!!In 2004, school lunch Rockwell high school was $2.20.In 2009 the costs increased to $3.25. Find the annual rate of chang

arsen [322]

Answer:

$0.21 per year

Step-by-step explanation:

$0.21 times 5 years equals $1.05

So its $0.21

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3 years ago

According to a recent study, the average woman's leg hair grows an eighth of an inch per month. A new drug company believes that

Afina-wow [57]

Answer:

Step-by-step explanation:

Null hypothesis should be: The average woman's leg hair grows an eighth of an inch per month: u = eighth of an inch

Alternative hypothesis: The average woman's leg hair growth is not an eighth of an inch per month after treatment: u ≠ eighth of an inch

This test after carrying out its treatment will be able to determine if the drug was effective or not

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3 years ago

Jenny had $175,but she is spending $28 per month the algebraic expression that models the situation is

ExtremeBDS [4]

Considering there is not much information my best guess would be 175-28x

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3 years ago

No step by step answers or links

inysia [295]

Answer:

1. k = 15

2. d = 20

3. n = 3

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2 years ago