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3 years ago

What is the percent of decrease on an item that went from $25 to $20?

Mathematics

2 answers:

MAVERICK [17]3 years ago

7 0

The percent of decrease on $25 to $20 is 5 percent.

Andrews [41]3 years ago

4 0

The percent of decrease on an item that went from $25 to $20 is 5 percent.

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WILL GIVE BRAINLIEST find the minimum value of the parabola y=x^2+42/5

Masja [62]

Answer:

Minimum value = $(0, \frac{42}{5} )$

Set up the function in general form
Determine the direction of the graph
Calculate -b/2a
Find the corresponding f(x) value
Write your quadratic function in standard or vertex form

Please Mark Brainliest If This Helped!

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1 year ago

Help please <br> Help please

love history [14]

Answer:

1. 1,605

2. -605

3. 21,575

Step-by-step explanation:

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2 years ago

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What is the sign of f on the interval -2

TEA [102]

Answer:

$f$ is sometimes positive and sometimes negative.

Step-by-step explanation:

$f(x)=(x-3)(x+2)(x+4)(x+4)(x-1)(2x-9)$

Take $x=-1\in(-2,\frac{9}{2})\ as-2$

$f(-1)=(-1-3)(-1+2)(-1+4)(-1-1)(-2-9)\\\\=(-4)(1)(3)(-2)(-11)\\\\=-264\\\\f(-1)$

Take $x=2\in(-2,\frac{9}{2})\ as\ -2$

$f(2)=(2,-3)(2+2)(2+4)(2-1)(2\times2-9)\\\\=(-1)(4)(6)(1)(-5)\\\\=120\\\\f(2)>0$

Hence $f(x)$ for $x=-1$ and $f(x)>0$ for $x=2$

So $f$ is sometimes positive and sometimes negative in the interval.

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3 years ago

How do you multiply fractions by whole numbers?

umka21 [38]

Rewrite the whole number as a fraction. To rewrite a whole number as a fraction, simply place the whole number over 1. ...Multiply the numerators of the two fractions. ...Multiply the denominators of the two fractions. ...Simplify.

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2 years ago

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- Mona Allen wants to buy a bed that costs $695. The city sales tax rate is 7%. In a nearby city the sales tax rate is 4%. How m

pentagon [3]

Answer:

$20.85 less.

Step-by-step explanation:

City sales:

7% tax = 48.65

total bed cost = $743.65

Nearby City:

4% tax = 27.8

total bed cost = $722.8

city sale - nearby city

743.65 - 722.8

=20.85

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2 years ago