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torisob [31]
3 years ago
7

What are the solutions of 3x2 + 14x + 16 = 0? x = , –2 x = –2, x = , 2 x = , 2

Mathematics
2 answers:
miskamm [114]3 years ago
7 0
Assume you mean 3x^2 when you typed the question.

3x^2+14x+16=0
(3x+8)(x+2)=0

x=-8/3 or -2
ycow [4]3 years ago
5 0

Answer:

option (A) is correct.

x = -2

Step-by-step explanation:

Given : equation 3x^2+14x+16=0

We have to solve for x,

Consider the given equation 3x^2+14x+16=0

we will solve the given quadratic equation using middle term split method, we have,

14x can be writen as 6x + 8x , we have,

3x^2+14x+16=0 \Rightarrow 3x^2+6x+8x+16=0

Taking 3x common from frst two terms and 8 common from lasttwo term , we have,

\Rightarrow 3x(x+2)+8(x+2)=0

Taking (x + 2) common, we have,

\Rightarrow (x+2)(3x+8)=0

Thus, Apply zero product rule, a\cdot b=0 \Rightarrow a =0 \ or\ b= 0

\Rightarrow (x+2)=0 or \Rightarrow (3x+8)=0

\Rightarrow x=-2 or \Rightarrow x=\frac{-8}{3}

Thus, option (A) is correct.

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y = 8x - 18

2x - 8(8x - 18) = 20

2x + -64x + 144 = 20

-62x + 144 = 20

-62x = -124

x = 2

6 0
3 years ago
For which x-values is the graph below discontinuous?
aleksandr82 [10.1K]

Answer:

A

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Evaluate:<br> Sigma 50 over 1 (4n - 1) = [?]
iogann1982 [59]

Answer:

50 over 1 (4n - 1) = 5050

I hope I helped you^_^

7 0
2 years ago
Correct answers only please!
Novay_Z [31]

Answer:

D.) 7

Step-by-step explanation:

To calculate the check digit, multiply every even-position digit (when counted from the right) in the number by two. If the result is a two digit number, then add these digits together to make a single digit (this is called the digital root):

Odd numbers:  (1.)= 8 (3.)= 4 (5.)= 6 (7.)= 0 (9.)= 4 (11.)= 6 (13.)= 2 (15.)=(1 + 6)= 7

Even numbers: (2.)= 3 (4.)= 8 (6.)= 1 (8.)= 3 (10.)= 6 (12.)=5 (14.)=0

To this total, we then add every odd-position digit:

Odd = 37

Even = 26

This will result in a total:

37 + 26 = 63

The check-digit is what number needs to be added to this total to make the next multiple of 10:

Next multiple of 10 is 70.

70 - 63 = 7

Answer:

7

Hope this helps : D

3 0
3 years ago
Read 2 more answers
Write the vector u as a sum of two orthogonal vectors, one of which is the vector projection of u onto v, projvu u=(-8,8) , v= (
Jobisdone [24]

Answer:

none of the given options is true

Step-by-step explanation:

Given: u=(-8,8) , v= (-1,2)

To find: vectors w_1,w_2 such that u=w_1+w_2

Solution:

A vector is a quantity that has both magnitude and direction.

proj_vu=\frac{u\cdot v}{\left | v \right |^2}(v)\\=\frac{(-8,8)\cdot (-1,2)}{(\sqrt{ (-1)^2+2^2})^2}(-1,2)\\=\frac{8+16}{5}(-1,2)\\=\frac{1}{5}(-24,48)\\=(-4.8,9.6)

Let w_1=(-4.8,9.6)

So,

w_2=u-w_1\\=(-8,8)-(-4.8,9.6)\\=(-8+4.8,8-9.6)\\=(-3.2,-1.6)

So, u = (-4.8,9.6)+(-3.2,-1.6)

So, none of the given options is true

8 0
3 years ago
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