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4 years ago

Which of the following is not a zero of the function shown below?

Mathematics

2 answers:

Ierofanga [76]4 years ago

7 0

Answer:

Step-by-step explanation:

For a number to be a zero of the polynomial, the function has to be equal to 0 if we were to plug in the number into x.

Let's find each:

plugging in x = -2 into the function:

$2(-2)^4-(-2)^3-42(-2)^2+16(-2)+160\\=0$

so this is a zero.

Plugging in x = 2 into the function:

$2(2)^4-(2)^3-42(2)^2+16(2)+160\\=48$

This is NOT a zero

Plugging in x = 4 into the function:

$2(4)^4-(4)^3-42(4)^2+16(4)+160\\=0$

this is a zero

Plugging in x = -4 into the function:

$2(-4)^4-(-4)^3-42(-4)^2+16(-4)+160\\=0$

this is a zero

hence, x = 2 in NOT a zero, answer choice B is right

erica [24]4 years ago

5 0

Answer:

Step-by-step explanation:

You might be interested in

The distance by rail from Leicester to Londonis 100 miles.

Zarrin [17]

The arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.

To calculate the arrival time in london of a train that leaves Leicester to london at 11:50 A.M, use use the formula below.

Formula:

Ta = [(d/s)+11:50]....... Equation 1

Where:

Ta = Arrival time
d = distance from Leicester to London
s = Speed

From the question,

Given:

d = 100 miles
s = 80 mph

Substitute these values into equation 1

Ta = [(100/80)+11:50]
Ta = 1.25h+11:50
Ta = 1 hours 15 minutes +11:50
Ta = 13:05 pm

Hence, the arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.

Learn more about time here: brainly.com/question/4931057

5 0

2 years ago

Joyce is making sushi rolls. She needs cup of

vlada-n [284]

Answer:

She can make 3 sushi rolls.

Step-by-step explanation:

it's not that hard, but ok

So, if Joyce needs one cup for every sushi rolls and she has 3 cups. You just add 3 + 0, getting you 3.

8 0

3 years ago

Stephanie needs to cover her yard with 4103/4ft2 of soil she has enough for 125 ft2 in one bag and 65 ft 2 in another bag how mu

Evgen [1.6K]

Answer:

Stephanie requires 835.75 square feet more amount of soil to cover her yard.

Step-by-step explanation:

Given:

Total square feet of yard she need to cover with soil = $\frac{4103}{4}\ ft^2$

$\frac{4103}{4}\ ft^2$ can be rewritten as 1025.75 square feet.

Total square feet of yard she need to cover with soil = $1025.75\ ft^2$

Amount of soil in one bag = $125\ ft^2$

Amount of soil in other bag = $65\ ft^2$

Total Amount of soil she has is equal to sum of Amount of soil in one bag and Amount of soil in other bag.

Framing the equation we get;

Total Amount of soil she has= $125+65 = 190\ ft^2$

Now We need to find the Amount of soil she required more to cover the yard.

Amount of soil she required more is equal to difference of Total Amount of soil she has and Total square feet of yard she need to cover with soil.

Framing the equation we get;

Amount of soil she required more = $1025.75-190= 835.75\ ft^2$

Hence Stephanie requires 835.75 square feet more amount of soil to cover her yard.

6 0

3 years ago

PLEASE I NEED ANSWER ASAP

mafiozo [28]

Answer:

42°

Step-by-step explanation:

$(7x - 2) \degree = (6x + 18) \degree\\ ..(exterior \: alternate \: \angle s) \\ 7x - 2 = 6x + 18 \\ 7x - 6x = 18 + 2 \\ x = 20 \\ \\ (7x - 2) \degree + \angle \: 1 = 180 \degree \\..(straight \: line \: \angle s) \\ (7 \times 20 - 2) \degree+ \angle \: 1 = 180 \degree \\ 138 \degree+ \angle \: 1 = 180 \degree \\ \angle \: 1 = 180 \degree - 138 \degree \\ \angle \: 1 = 42\degree$

8 0

3 years ago

The diameter of a circle has length 12. The center is at*(-5, 2). Give the equation

labwork [276]

Answer:

Equation of the circle is : $x^{2} + 10x + y^{2} -4y -7 =0$

Step-by-step explanation:

Let us consider the image attached in the answer area.

The center O has the co-ordinates i.e. (-5,2) and the diameter given is 12 units.

We know that radius is half of diameter.

$\text{Radius = }\dfrac{\text{Diameter}}{2}$

$\text{Radius = }\dfrac{12}{2}\\\Rightarrow \text{Radius = 6units}$

The equation for circle given the center and radius, can be represented as:

$(x-a)^{2}+ (y-b)^{2} = r^{2}$

Where (a,b) is the co-ordinate of center and r is the radius.

Let us consider the following formula:

$(p+q)^2 = p^{2}+ q^{2} +2pq\\(p-q)^2 = p^{2}+ q^{2} -2pq$

$(x-(-5))^{2}+ (y-2)^{2} = 6^{2}\\\Rightarrow (x+5)^{2}+ (y-2)^{2} = 36\\\Rightarrow x^{2} + 25 + 10x +y^{2} + 4-4y=36\\\Rightarrow x^{2} + 10x +y^{2} -4y-7=0$

Hence, Equation of the circle is : $x^{2} + 10x + y^{2} -4y -7 =0$

4 0

3 years ago