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3 years ago

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9

Mathematics

1 answer:

JulijaS [17]3 years ago

7 0

X=1,
X=-3
Use Photomath it helps

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Find the square root of 32/3 up to three decimal pace<br>

butalik [34]

Answer:

The square root of 32 by 3 is 5.657

Step-by-step explanation:

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3 years ago

A triangle in the coordinate plane has the following vertices: P(-4,-3), 1(-2,-2), G(-2,-4). What are the new coordinates if the

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P’(-1, 1), I’ (1, 2), G’(1,0)

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2 years ago

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3 years ago

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A set of electric toothbrush prices are normally distributed with a mean of 87 dollars and a standard deviation of

Studentka2010 [4]

Answer:

The proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars is 0.0099

Step-by-step explanation:

A set of electric toothbrush prices are normally distributed with a mean of 87 dollars and a standard deviation of 8 dollars.

$Mean = \mu = 87$

Standard deviation = $\sigma = 8$

We are supposed to find proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars i.e.P(104.60<x<108.20)

$Z=\frac{x-\mu}{\sigma}$

At x = 104.60

$Z=\frac{104.60-87}{8}$

Z= 2.2

At x=108.20

$Z=\frac{108.20-87}{8}$

Z= 2.65

Refer the z table for p value :

P(x<108.20)-P(x<104.60)=P(Z<2.65)-P(Z<2.2)=0.9960-0.9861=0.0099

Hence The proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars is 0.0099

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3 years ago

The basic model of pure competition reviewed in this chapter finds that in the long run all firms in a purely competitive indust

marissa [1.9K]

Answer:

Companies must strive to improve their products and services within the framework of healthy competition.

Step-by-step explanation:

The competition is a situation of companies that compete in a requested market or demanding the same product or service. This implies that companies must strive to improve the balance of normal earnings.

creating new products or new solutions of lower cost. In this sense, if companies can innovate, they can obtain economic gains in the short term, and increase their profits.

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3 years ago