All categories

3 years ago

If a cubic polynomial has zeros at x= -4, x=0 and x=7, then

Mathematics

2 answers:

34kurt3 years ago

7 0

Answer:

Step-by-step explanation:

The Fundamental theorem of algebra tells us that a polynomial of degree n has n roots.

Here the polynomial is a cubic, that is of degree 3

Thus it will have 3 roots, real and/ or imaginary.

Since imaginary roots occur in conjugate pairs

Since the polynomial has 3 real roots there are no imaginary roots, thus

A is the required response.

maw [93]3 years ago

5 0

I think the answer ia A that what i think

You might be interested in

[Exponential] |x|-2|-1|0|1|2| |y|2/9|2/3|2|6|18| When the x-value increases by 1, the y-value ________ (b-value)

dimaraw [331]

Answer:

$b = 3$

The value of y triples

Step-by-step explanation:

Given:

$\begin{array}{cccccc}x & {-2} & {-1} & {0} & {1} & {2} \ \\ y & {\frac{2}{9}} & {\frac{2}{3}} & {2} & {6} & {18} \ \end{array}$

Required

Determine b value

An exponential equation is:

$y = ab^x$

When $x = 0; y =2$

So:

$y = ab^x$

$2 = a * b^0$

$2 = a$

$a = 2$

When $x = 2; y = 18$

So:

$18 = a * b^2$

Substitute 2 for a

$18 = 2 * b^2$

Divide by 2

$9 = b^2$

Take positive square roots of both sides

$3 = b$

$b = 3$

5 0

2 years ago

Ana Participated in each charity walk she raise $.25 and each 1/2 That she walked the first day and I walked 11 miles a second d

Tresset [83]

Question:

Ana participated in a charity walk. She raised $0.25 for each 1/2 mile that she walked.The first day Ana walked 11 miles.The second day, she walked 14 miles.How much money did Ana raised?

Answer:

Ana raised $ 12.5

Solution:

From given question,

First day walk = 11 miles

Second day walk = 14 miles

Let us first calculate the total distance she walked

Total distance = first day walk + second day walk

Total distance = 11 + 14 = 25 miles

Thus she walked for 25 miles

Given that,

She raised $0.25 for each 1/2 mile that she walked

$\frac{1}{2} \text{ mile} = 0.25 \text{ dollars }$

Therefore, for 1 mile we get,

$\frac{1}{2} \times 2 \text{ mile} = 0.25 \times 2 \text{ dollars }\\\\1 \text{ mile } = 0.5 \text{ dollars }$

Now calculate for 25 miles

$25 \text{ mile } = 25 \times 0.5 = 12.5 \text{ dollars }$

Thus she raised $ 12.5

4 0

3 years ago

A training field is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 90 m long and 66 m wide.

almond37 [142]

I hope this helps you

6 0

2 years ago

Find the value of the variable. Round decimal answers to the nearest tenth. x =

Andrews [41]

Answer:

Step-by-step explanation:

The hypotenuse of a triangle is a² + b² = c².

12² + 9² = c²

144 + 81 = 225

√225 = 15

3 0

3 years ago

| 357,25235 divided by 7252

Dmitriy789 [7]

4926.25965251

I used a calculator because it makes solving this much easier

3 0

3 years ago