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3 years ago

5x^2 - 6x - 28 = 0 please help me do this

Mathematics

1 answer:

Yanka [14]3 years ago

4 0

Answer:

x= 3 5 + 1 5 √149 or x= 3 5 + −1 5 √149

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How do I get the ans??

ioda

Answer:

11 sets of forks

Step-by-step explanation:

First subtract 406-278 to find total amount of forks needed which is 128 forks.

Then divide 128 by 12 to see how many sets of forks you need.

You get 10.67 but because you can't buy two thirds of a set, you have to round up to 11 sets of forks.

Hope this helps :)

4 0

3 years ago

Read 2 more answers

In a sample of 1000 randomly, selected consumers who had opportunities to send in a rebate claim form after purchasing a product

Alexxx [7]

Answer: $=(0.2232,0.2768)$

Step-by-step explanation:

The confidence interval for population proportion is given by :-

$p\ \pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}$

Given : Sample size : $n=1000$

The proportion of people selected consumers who had opportunities to send in a rebate claim form after purchasing a product said they never did so = $\dfrac{250}{1000}=0.25$

Significance level : $1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Now, the 95% confidence Interval for the true proportion of such consumers who never apply for a rebate will be :-

$0.25\ \pm (1.96)\sqrt{\dfrac{0.25(1-0.25)}{1000}}\\\\\approx0.25\pm0.0268\\\\=(0.2232,\ 0.2768)$

Hence, a confidence Interval for the true proportion of such consumers who never apply for a rebate .

8 0

3 years ago

HELP I WILL MARK BRAINLIEST

Alborosie

Answer:

I think your right my dude

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

543x=244x+255x

RUDIKE [14]

Answer:

The answer is x = 0

8 0

3 years ago

You have 8 cups of flour. A recipe calls for 2/3cup of flour. Another recipe calls for 1/4 cup of flour. How much flour do you h

Sonja [21]

There will be 5 more because 8-2-1 =5

6 0

3 years ago