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2 years ago

Describe how to graph the solution of y <= - x ^ 2 + 2x

Mathematics

1 answer:

mafiozo [28]2 years ago

7 0

Answer:

Graph the parabola opening down,

Step-by-step explanation:

With the vertex at (1, 1),factor the quadratic as y < (less than or equal to) –1(x)(x – 2),find the roots of the parabola to be 0 and 2,graph the parabola with a solid boundary line,test a point that is not on the boundary,and shade inside the parabola.

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Nora and Mindy are going to a movie. Mindy forgot her money and is going to pay Nora back later. The cost of the two tickets is

Agata [3.3K]

Answer:

$9.62

Step-by-step explanation:

15.50 + 3.74 = 19.24

19.24 / 2 = 9.62

so Mindy must pay Nora $9.62

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2 years ago

Read 2 more answers

If M ∠nop = 31 and m ∠NOQ=114 what is m ∠ROQ?

yulyashka [42]

Answer: 83

Step-by-step explanation:

if 31 is m nop and nog is 114 then you subtract 31 from 114

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2 years ago

Veronique and Lily compare their investment accounts to see how much they will have in the accounts after seven years. They subs

ch4aika [34]

Answer:

Veronique: A = 1,000 (1 + 0.05) superscript 7, Lily: A = 1,800 (1 + 0.09) Superscript 7

Step-by-step explanation:

the equation used to calculate future value of an investment (or bank deposit) using compound interest is:

future value = present value x (1 + interest rate)ⁿ

Veronique: future value = $1,000 x (1 + 5%)⁷ = $1,057
Lily: future value = $1,800 x (1 + 9%)⁷ = $3,290.47

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2 years ago

12. If a manufacturer conducted a survey among randomly selected target market households and wanted to be 95% confident that th

atroni [7]

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11$

And rounded up we have that n=1068

Step-by-step explanation:

We have the following info given:

$Confidence= 0.95$ the confidence level desired

$ME =0.03$ represent the margin of error desired

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

The confidence level is 95% or 0.95, the significance is $\alpha=0.05$ and the critical value for this case using the normal standard distribution would be $z_{\alpha/2}=1.96$

Since we don't have prior information we can use $\hat p= 0.5$ as an unbiased estimator

Also we know that $ME =\pm 0.03$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

And replacing into equation (b) the values from part a we got:

$n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11$

And rounded up we have that n=1068

6 0

2 years ago

A researcher found a study relating the value of a car, y, to the age of the car, x. When researchers looked at the association

vredina [299]

Answer: c) About 16% of the variation in value of the car is explained by a linear relationship with the age of the car.

e) The correlation coefficient, r, is 0.397.

Step-by-step explanation:

Given that:

Coefficient of determination (r²) between two variables, age of car (x) and value of car (y) = 0.158

Correlation of determination (r²) of 0.158 = (0.158 × 100% = 15.8% of the variation between the two variables can be explained by the regression line). Hence, about 16% of the variation between age and value of car can be explained by the linear relationship.

Coefficient of correlation (r) = sqrt(r²) = sqrt(0.158) = 0.397

8 0

2 years ago

Describe how to graph the solution of y <= - x ^ 2 + 2x​

Describe how to graph the solution of y <= - x ^ 2 + 2x