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2 years ago

Help please!!!!! I need it

Mathematics

1 answer:

docker41 [41]2 years ago

7 0

Answer:

it is 7x-4

Step-by-step explanation:

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For the following pair of functions, find (f+g)(x) and (f-g)(x).

ch4aika [34]

Given:

The functions are

$f(x)=4x^2+7x-5$

$g(x)=-9x^2+4x-13$

To find:

The functions $(f+g)(x)$ and $(f-g)(x)$ .

Solution:

We know that,

$(f+g)(x)=f(x)+g(x)$

$(f+g)(x)=4x^2+7x-5-9x^2+4x-13$

$(f+g)(x)=(4x^2-9x^2)+(7x+4x)+(-5-13)$

$(f+g)(x)=-5x^2+11x-18$

And,

$(f-g)(x)=f(x)-g(x)$

$(f-g)(x)=(4x^2+7x-5)-(-9x^2+4x-13)$

$(f+g)(x)=4x^2+7x-5+9x^2-4x+13$

$(f+g)(x)=(4x^2+9x^2)+(7x-4x)+(-5+13)$

$(f-g)(x)=13x^2+3x+8$

Therefore, the required functions are $(f+g)(x)=-5x^2+11x-18$

and $(f-g)(x)=13x^2+3x+8$ .

7 0

3 years ago

Help please solve for Y

Valentin [98]

Answer:

y=13

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A student figures that he has a 4141% chance of being let out of class late. If he leaves class late, there is a 3030% chance

andreev551 [17]

Answer:

12.3%

Step-by-step explanation:

In this case, despite being different events, they are dependent on each other, therefore the final probability would be the multiplication of both probabilities.

So let L be the probability of being late that is equal to 41% and let T be the probability that the train will leave you and is equal to 30%.

That is to say:

L = 41% = 0.41

T = 30% = 0.3

So:

P = L * T

P = 0.41 * 0.3 = 0.123

So it means that the final probability is 12.3%

5 0

3 years ago

Which equation results from adding the equations in this system?

S_A_V [24]

Answer:

i dont know

i am only a kid

but it is 100000000000000

hehe

4 0

2 years ago

Read 2 more answers

Select the two binomials that are factors of this trinomial x^2+10x+16

ohaa [14]

Answer:

The correct options are A: x+8 and C: x+2.

Step-by-step explanation:

We are given the following expression and we are to factorize it:

$x^2+10x+16$

We are to find such factors that when multiplied they give a result of 16 (1 x 16 = 16) and when added they give a result of 10.

The two such factors of 16 are positive 2 and positive 8.

Factorizing the given expression to get:

$x^2+10+16\\\\x^2+2x+8x+16\\\\x(x+2)+8(x+2)\\\\(x+2)(x+8)$

Therefore, the two binomial factors of the given expression $x^2+10x+16$ are (x+8) and (x+2).

8 0

3 years ago

Help please!!!!! I need it ​

Help please!!!!! I need it