2 years ago

Use quadratic regression to find a function that does the following points.

Mathematics

1 answer:

gladu [14]2 years ago

7 0

Answer:

$y = -x^{2} +4x-10$

Step-by-step explanation:

I used a graphing calculator to calculate the points so I'm not sure how to do it without, but I hope this helped!

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A researcher believes that 12% of a simple random sample of adults will be able to identify a Toyota Scion by brand and model na

DochEvi [55]

Answer: 650

Step-by-step explanation:

When prior estimate of population proportion is known , then the formula to find the required sample size is given by :-

$n=p(1-p)(\dfrac{z^*}{E})^2$

, where p= population proportion

E= margin of error

z* = Critical value.

Let p be the proportion of adults able to identify a Toyota Scion by brand and model name.

As per given , we have

p = 12%= 0.12

E= 2.5%=0.025

Critical value for 95% confidence interval : z* = 1.960 [By z-table ]

Then, the required sample size = $n=(0.12)(1-(0.12))(\dfrac{1.96}{0.025})^2$

$n=(0.1056)(78.4)^2$

$n=(0.1056)(6146.56)$

$n=649.076736\approx650$

Thus , the required sample size = 650

6 0

3 years ago

I need help with 23 and 24

Galina-37 [17]

23. The answer is B) x-6.
23.) The answer is D) x + 3

4 0

3 years ago

how do you write y - 2 = -(x - 3) in slope-intercept form? A) y = x + 3 B) y = x - 1 C) y = -x + 5 D) y = -3x - 1

SashulF [63]

C) y= -x+5
explain:
y-2=-x+3
y= -x+3+2
so y= -x+5

5 0

2 years ago

Find the center of the circle that can be circumscribed about EFG with E(2,2),F(2,-2), and G(6,-2)

RSB [31]

Hmmm I'd say the center of the circle will end up at the center of the triangle, namely the Centroid of the triangle circumscribed in the circle.

$\bf \textit{Centroid of a Triangle}
\begin{array}{llll}
\stackrel{E(2,2)~~F(2,-2)~~G(6,-2)}{\left(\cfrac{2+2+6}{3}\quad ,\cfrac{2-2-2}{3}\quad \right)}
\end{array}$

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3 years ago

Tony brought 3 packs of pencils for $4 each and a pencil box for $7. Mario bought 4 binders for $6 each and used a coupon for $6

ladessa [460]

Tony- 3•4+7=$19
Mario- 6•4-6=$18
Tony spent more.

7 0

3 years ago

Read 2 more answers