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Cerrena [4.2K]
3 years ago
8

What is the vertex form of: y = 3x^2 - 12x + 5

Mathematics
2 answers:
AVprozaik [17]3 years ago
8 0

Answer:

3(x-2)^2-7

Step-by-step explanation:

expanding gives you: 3(x^2-4x+4)-7=3x^2-12x+12-7=3x^2-12x7+5

Juli2301 [7.4K]3 years ago
7 0

Answer:The vertex form is -y=a(x-h)2+k

Step-by-step explanation:

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A new car is purchased for 19000 dollars. The value of the car depreciates at 11.25% per year. What will the value of the car be
Ainat [17]

Answer:

$3573. 64

Step-by-step explanation:

Convert 11.25% to the decimal fraction 0.1125.  Then subtract this result from 1.0000:  0.8875.

After 14 years, the formerly $19000 car will have the value

$19000(0.8875)^14 = $3573. 64

7 0
3 years ago
Helppppppp I am so dumb sorry
maria [59]

Answer: I think the asnwer is c

Step-by-step explanation:

I suggest this because when your looking at the two different triangles your looking at the sides and the whole shape

6 0
3 years ago
Read 2 more answers
The product of a number and -7 is at most -70. what is inequality 18 points
zimovet [89]

Answer:

Inequality :

-7x\le \:-70

Step-by-step explanation:

Let the unknown number be x

at most -70 = ≤ -70

x\times(-7) \leq -70\\\\-7x\leq -70

Solving further  :

-7x\le \:-70\\\\\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}\\\\\left(-7x\right)\left(-1\right)\ge \left(-70\right)\left(-1\right)\\\\Simplify\\\\7x\geq 70\\\\\mathrm{Divide\:both\:sides\:by\:}7\\\\\frac{7x}{7}\ge \frac{70}{7}\\\\Simplify\\\\x \geq 10

3 0
3 years ago
A newspaper found that, on average, 7.6% of people stay overnight in the hospital with a 1.5% margin of error. Construct a 95% c
Verizon [17]

Given:

p = 7.6% = 0.076, the percentage of people who stay overnight at the hospital.

E = 1.5% = 0.015, margin of error

95% confidence interval.

The standard error is

Es = \sqrt{ \frac{p(1-p)}{n} }

where

n = the sample size.


The margin of error is

E=z^{*}E_{s}

where

z* = 1.96 at the 95% confidence level.

Because the margin of error is given, there is no need to calculate it.

The 95% confidence interval is

p +/- E = 0.076 +/- 0.015 = (0.061, 0.091) = (6.1%, 9.1%)


Answer: 

The 95% confidence interval is between 6.1% and 9.1%.






3 0
4 years ago
Damon measured his bedroom and the length measured 5.6 meters. Given that I meter = 3.28 feet, what is the length of Damon's roo
Elina [12.6K]

Answer:

D) 18.37 feet

Step-by-step explanation:

5.6 x 3.28 = 18.37 feet

6 0
3 years ago
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