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3 years ago

Simplify this polynomial. 5x + 6y + 3y - 2x

Mathematics

1 answer:

Sloan [31]3 years ago

6 0

3x+9y
Hope this helps.

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The measures of two complementary angles are represented by (2x) and (3x - 10)". What is the value of x?

raketka [301]

Answer:

Step-by-step explanation:

2x + 3x - 10 = 90

Combine like terms

5x - 10 = 90

Add 10 to both sides

5x = 90+10

5x = 100

Divide both sides by 5

x =100/5

x = 20

3 0

3 years ago

Find the 10th and nth term of each G.P.:5,25,125,.....

RUDIKE [14]

Answer:

The $n^{th}$ of the sequence

$t_{n} = ar^{n-1}$

The $10^{th}$ of the sequence

$t_{10} = 5(5)^{10-1} = 9,765,625$

Step-by-step explanation:

Explanation:-

Given that the geometric sequence

5, 25 , 125 ,....

First-term a= 5

Difference $r = \frac{25}{5} =5$

The $n^{th}$ of the sequence

$t_{n} = ar^{n-1}$

The $10^{th}$ of the sequence

$t_{10} = 5(5)^{10-1} = 9,765,625$

6 0

3 years ago

Which describes the intersection of line m and line n?

posledela

Answer:

Point W

Step-by-step explanation:

The intersection of two lines is a point. In this case, the point is named W.

5 0

4 years ago

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Maru [420]

Whats your question?

4 0

4 years ago

A researcher conducted an Internet survey of 500 students at a particular college to estimate the average amount of money studen

bonufazy [111]

Answer:

The margin of error is $ME = 2.2962$

Step-by-step explanation:

From the question we are told that

The number of student is $n = 500$

The highest amount is $A =$ $200

The lowest amount is $B =$ $75

The sample mean is $x =$ &140

The Standard deviation of this set is mathematically evaluated as

$s = \frac{A-B}{4}$

Substituting values

$s = \frac{200-75}{4}$

$s = 31.25$

The margin of error (ME) is mathematically evaluated as

$ME = t_{n-1}__{\alpha }} * \frac{s}{\sqrt{n} }$

Where $t_{n-1}__{\alpha }}$ is the critical value for $\alpha = 0.05$ i.e the significance level

From the critical value table this is $t_{n-1}__{\alpha }} = 1.649$

$ME = 1.649 * \frac{31.25}{\sqrt{500} }$

$ME = 2.2962$

6 0

4 years ago