2 years ago

If -2 is a zero the polynomial 3x^2+2x+k, find the value of k

Mathematics

1 answer:

UNO [17]2 years ago

4 0

Answer:

value of K =16

I hope it's helps you

You might be interested in

Find the angle between the given vector in degrees. u=<6, 4>, v=<7, 5> HELPPPPPPPPPP

Paladinen [302]

Recall that

$\vec a\cdot\vec b=\|\vec a\|\|\vec b\|\cos\theta$

where $\theta$ is the angle between the vectors $\vec a,\vec b$ whose magnitudes are $\|\vec a\|,\|\vec b\|$ , respectively.

We have

$\langle6,4\rangle\cdot\langle7,5\rangle=\sqrt{6^2+4^2}\sqrt{7^2+5^2}\cos\theta$

$\cos\theta=\dfrac{31}{\sqrt{962}}\implies\theta\approx88.2^\circ$

7 0

2 years ago

Arlecino [84]

Answer:

-2,4

Step-by-step explanation:

4 0

2 years ago

WILL MARK BRAINLIEST!<br><br> Given: Parallelogram ABCD, calculate the length of AD

frez [133]

Your answer would be 20.6

5 0

2 years ago

A store holiday sale has an item marked down by $10 with an additional discount of 25% off the

ValentinkaMS [17]

Answer:

C : $58.36

Step-by-step explanation:

Given:

A store holiday sale has an item marked down by $10.

Discount on new price = 25%

Final price was $36.27.

Question asked:

what was the original ?

Solution:

Let original price = $x$

New price = $x - 10$

Original price - marked down amount - discount amount = $36.27

$x - 10 -25\% of(x - 10 ) = 36.27\\$

$x - 10 - \frac{25}{100} (x - 10) = 36.27\\x - 10 - 0.25(x - 10) = 36.27\\x - 10 -0.25x +2.5 = 36.27\\0.75x - 7.5 = 36.27\\$

Adding both side by 7.5

$0.75x = 43.77\\$

Dividing both side by 0.75

$x = 58.36$

Therefore, the original price was $58.36

5 0

2 years ago

The difference between a triple a number and a double a number

NeX [460]

A triple number has 3 numbers and a double numbers has 2 numbers only.

6 0

3 years ago

If -2 is a zero the polynomial 3x^2+2x+k, find the value of k​

If -2 is a zero the polynomial 3x^2+2x+k, find the value of k