All categories

3 years ago

What is the sum of the coefficients of the expression 3x^4+5x^2+x?

Mathematics

2 answers:

IrinaK [193]3 years ago

7 0

Answer:

The sum of coefficients = 9

Step-by-step explanation:

The given expression is,

3x⁴ + 5x² + x

There are three terms in the given expression. All the terms contains variable x.

<u>To find the coefficients of each terms </u>

term coefficients

3x⁴ 3

5x² 5

x 1

<u>To find the sum of coefficients </u>

sum = 3 + 5 + 1 = 9

Therefore the sum of coefficients = 9

hram777 [196]3 years ago

5 0

<h2>Hello!</h2>

The answer is: 9

To find the sum of the coefficients of the polynomial we have, we need to evaluate $x=1$

So,

$3(1)^4+5(1)^2+1=9$

The sum of the coefficientes of the expression is 9

Have a nice day!

You might be interested in

Donation Table<br> 14 boxes<br> of<br> canned<br> food<br> boxes for each charity

levacccp [35]

Answer:

what is the question bro?

5 0

3 years ago

X/2 is greater than or equal to -4

irga5000 [103]

$\frac{x}{2}$ ≥-4

Pretend the greater than or equal to sign is an equal sign, we will substitute it back in later.

x/2 = -4
Multiply both sides by 2 to get x alone
x = -8
Substitute the greater than or equal to sign back in and voila!
x≥-8

3 0

3 years ago

Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is μd =

swat32

Answer:

Test statistic, $t_{s} = -0.603$ (to 3 dp)

Step-by-step explanation:

Deviation, d = x -y

Sample mean for the deviation

$\bar{d} = \frac{\sum x-y}{n}$

$\bar{d} = \frac{(28-6) + (31-27)+(20-26)+(25-25)+(28-29)+(27-32)+(33-33)+(35-34)}{8} \\\bar{d} = -0.625$

Standard deviation: $SD = \sqrt{\frac{\sum d^{2} - n \bar{d}^2}{n-1} }$

$\sum d^{2} = (28-26)^2 + (31-27)^2 +(20-26)^2 +(25-25)^2 +(28-29)^2 +(27-32)^2 +(33-33)^2 +(35-34)^2\\\sum d^{2} = 63$

$SD = \sqrt{\frac{63 - 8 * (-0.625)^2}{8-1} }$

SD =2.93

Under the null hypothesis, the formula for the test statistics will be given by:

$t_{s} = \frac{ \bar{d}}{s_{d}/\sqrt{n} } \\t_{s} = \frac{- 0.625}{2.93/\sqrt{8} }$

$t_{s} = -0.6033$

6 0

3 years ago

Anyone know how to do this

blsea [12.9K]

Answer:

A B C D E MIGHT BE UR ANSWER

7 0

3 years ago

Kristal orders tacos. She left a $7 tip which was 20% of her bill.

morpeh [17]

Answer:

30 bucks

Step-by-step explanation:

Just multiply 7 x 5

4 0

3 years ago