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3 years ago

What is the interest rate on Mackenzie’s account?

Mathematics

2 answers:

balu736 [363]3 years ago

4 0

(3x-8)(2x^2+4x-9)= 6x^3−4x^2−59x+72

hjlf3 years ago

3 0

It would be B. because the rise over run is 31.25 over 5 which is divided to 6.25 which is rounded to 6.3

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Write the equation in it's simplest form or as

allsm [11]

9514 1404 393

Answer:

2∛7

Step-by-step explanation:

Putting the expression in simplest form will factor cubes from under the radical.

$\displaystyle\sqrt[3]{56}=\sqrt[3]{2^3\cdot7}=\boxed{2\sqrt[3]{7}}$

7 0

2 years ago

HELPPPPP ASAPPPPPP!!!!! PLZZZZZ!!!!

BlackZzzverrR [31]

The answer would be horizontal reflection because it has been reflected over a horizontal line. Hope this helps :-)

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2 years ago

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A manufacturer of paper coffee cups would like to estimate the proportion of cups that are defective (tears, broken seems, etc.)

Maksim231197 [3]

Answer:

The 95% confidence interval is $0.0503 < p < 0.1297$

The sample proportion is $\r p = 0.09$

The critical value is $Z_{\frac{\alpha }{2} } = 1.96$

The standard error is $SE =0.020$

Step-by-step explanation:

From the question we are told that

The sample size is n = 200

The number of defective is k = 18

The null hypothesis is $H_o : p = 0.08$

The alternative hypothesis is $H_a : p > 0.08$

Generally the sample proportion is mathematically evaluated as

$\r p = \frac{18}{200}$

$\r p = 0.09$

Given that the confidence level is 95% then the level of significance is mathematically evaluated as

$\alpha = 100 - 95$

$\alpha = 5\%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{ \alpha }{2}$ from the normal distribution table, the value is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the standard of error is mathematically represented as

$SE = \sqrt{\frac{\r p (1 - \r p)}{n} }$

substituting values

$SE = \sqrt{\frac{0.09 (1 - 0.09)}{200} }$

$SE =0.020$

The margin of error is

$E = Z_{\frac{ \alpha }{2} } * SE$

=> $E = 1.96 * 0.020$

=> $E = 0.0397$

The 95% confidence interval is mathematically represented as

$\r p - E < \mu < p < \r p + E$

=> $0.09 - 0.0397 < \mu < p < 0.09 + 0.0397$

=> $0.0503 < p < 0.1297$

7 0

3 years ago

Martin uses his power saw every 15 seconds.How many times did he use it in one hour ?

Alina [70]

Answer:

60÷15 =4

Therefore Martin uses his power saw 4 times in one hour 

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3 years ago

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PLEASE HELP I have no idea how to do this

tresset_1 [31]

Answer:

1st 2nd or both's answer you want

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3 years ago