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2 years ago

Evaluate 5x-6y-7z-3x+2y-z-4x-3y+z

Mathematics

1 answer:

Mazyrski [523]2 years ago

6 0

Answer:

-2x-7y-7z

Step-by-step explanation:

I'm going to start off by separating the different variables and keeping the sign in front with it.

(5x-3x-4x) + (-6y+2y-3y) + (-7z-z+z)

After that it's simply solving a simplifying.

(-2x) + (-7y) + (-7z)

And your final answer should be...

-2x - 7y - 7z!

Hope I helped!

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Which of the following statements is correct if you roll a fair 6-sided die 600 times?

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The answer is b hope it helped

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3 years ago

Reduce the fraction completely.96/53

Alex777 [14]

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3 years ago

Read 2 more answers

ANSWER ASAP

xz_007 [3.2K]

Answer:

12.5 pi or 39.26990

Step-by-step explanation:

First we can find the radius, which is half the diameter, 5 feet. To find the area of a semi-circle we would find the area of the circle and then divide by 2:

$\frac{\pi r^2}{2}$

We can substitute what we have:

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This gives us:

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6 0

3 years ago

Hoping to attract more shoppers, a city builds a new public parking garage downtown. The city plans to pay for the structure thr

posledela

Answer:

$MOE_{95} = 1.192\cdot MOE_{90}$

Step-by-step explanation:

The margin of error is computed using the formula:

$MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

The critical of <em>z</em> for 95% confidence level and 90% confidence level are:

$z_{0.05/2}=z_{0.025}=1.96\\\\z_{0.10/2}=z_{0.05}=1.645$

*Use a <em>z</em>-table.

The sample size is n = 44.

Compare the MOE for 95% confidence level and 90% confidence level as follows:

$\frac{MOE_{95}}{MOE_{90}}=\frac{1.96\times (15/\sqrt{44})}{1.645\times (15/\sqrt{44})}$

$\frac{MOE_{95}}{MOE_{90}}=\frac{1.96}{1.645}\\\\\frac{MOE_{95}}{MOE_{90}}=1.192\\\\MOE_{95} = 1.192\cdot MOE_{90}$

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3 years ago

May I have help on question 13 read The question and Then give Me The answer

GalinKa [24]

Answer:

420 miles

Step-by-step explanation:

you have to subtract the initial cost of the car from $270. That leaves you with $210 remaining to spend on mileage. At a rate of 50 cents per mile you have to determine how many miles it would take to spend $210. At a rate of $1 per mile it would take 210 miles to spend $210 dollars. BUt since each mile is 50 cents and it takes .50 times 2 to make 1, you have the multiply 210 by 2 which equals 420.

3 0

3 years ago