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1 year ago

Which expression is equivalent to (3x4+17x3−x)+(−2x4−5x)?

2 answers:

7 0

Answer
X=-6/55
Step-by-step explanation:
(3×4+17×3-x)+(-2×4-5x)?
=12+51-x-8-5x
=12+51-x-8-5x
=63-x-8-5x
=63-8-x-5x
=55-x-5x
=55-6x
X=-6/55
I hope its help u... Thanks

umka2103 [35]1 year ago

5 0

The equivalent expression of the given expression (3x⁴ + 17x³ − x) and (− 2x⁴ − 5x) will be (x⁴ + 17x³ − 6x).

<h3>What is an equivalent function?</h3>

The equivalent is the functions that are in different forms but are equal to the same value.

The expression is given below.

(3x⁴ + 17x³ − x) + (− 2x⁴ − 5x)

Then the equivalent expression of the given expression will be

3x⁴ + 17x³ − x − 2x⁴ − 5x

x⁴ + 17x³ − 6x

The equivalent expression of the given expression (3x⁴ + 17x³ − x) and (− 2x⁴ − 5x) will be (x⁴ + 17x³ − 6x).

More about the equivalent link is given below.

brainly.com/question/889935

#SPJ2

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3 years ago

sergey [27]

Answer:

His money earned $36 after 3 months

Step-by-step explanation:

* Lets revise the rules of simple interest

- Simple Interest Equation (Principal + Interest)

A = P(1 + rt)

- Where:

• A = Total amount (principal + interest) future amount

• P = Principal Amount

• I = Interest Amount

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• t = Time Period involved

* To calculate the interest I use the formula

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* Lets solve the problem

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3 years ago

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estim

pogonyaev

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.025}{1.28})^2}=655.36$

And rounded up we have that n=656

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 80% of confidence, our significance level would be given by $\alpha=1-0.80=0.20$ and $\alpha/2 =0.10$ . And the critical value would be given by:

$z_{\alpha/2}=\pm 1.28$

Solution to the problem

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)

Since we don't have prior info for the proportion of interest we can use $\hat p=0.5$ as estimator. And on this case we have that $ME =\pm 0.025$ 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:

$n=\frac{0.5(1-0.5)}{(\frac{0.025}{1.28})^2}=655.36$

And rounded up we have that n=656

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2 years ago

PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!!!!

AlexFokin [52]

A) The two line plots are attached.

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m(RM) = (40 + 38 + 36 + 36 + 36 + 36 + 34 + 32) ÷ 8
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In order to calculate the mean absolute deviation (MAD), you need to calculate the absolute values from the mean, sum them up and divide it by the number of values; the absolute values of the difference from the mean are:
MSH = {|34-30|, |34-30|, |30-30|, |30-30|, |30-30|, |28-30|, |28-30|, |26-30|}
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RM = {|40-36|, |38-36|, |36-36|, |36-36|, |36-36|, |36-36|, |34-36|, |32-36|}
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3 years ago

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