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2 years ago

Very last of my points

Mathematics

2 answers:

love history [14]2 years ago

8 0

Answer:

thanks

Step-by-step explanation:

mote1985 [20]2 years ago

5 0

Answer:

thanks I guess

but if its your last points why are you giving it up

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In need of some help! Thank you in advance. 100 points <3

Anni [7]

Answer:

the equation (x-4)^2-17=8 has two solutions because it is in a quadratic form.

(x-4)^2-17=8

x²-8x+16-17-8=0

x²-8x-9=0

Doing middle term factorization

x²-9x+x-9=0

x(x-9)+1(x-9)=0

(x-9)(x+1)=0

either

x=9

x=9or

x=9orx=-1

x^2+4x+3=0:

Doing middle term factorization

x²+3x+x+3=0

x(x+3)+1(x+3)=0

(x+3)(x+1)=0

either

x=-3

x=-1

Josh’s solution is incorrect because he missed x=-3.

3.

x^2-6x+7=0

By using quadratic equation formula:

Comparing above equation with ax²+bx+c=0

we get

a=1

b=-6

c=7

Now

we have

x= $\frac{ - b ± \sqrt{ {b}^{2} - 4ac} }{2a}$

x= $\frac{ 6± \sqrt{ {-6}^{2} - 4*1*7} }{2}$

x= $\frac{ 6±2\sqrt{ 2}}{2}$

x= ${ 3±\sqrt{ 2}}$

Taking positive

x= ${ 3+\sqrt{ 2}}$

taking negative

x= ${ 3-\sqrt{ 2}}$

4 0

3 years ago

What is the value of x?

AysviL [449]

Answer:

x=5

Step-by-step explanation:

Since both of these length are equal, 6x+4=8x-6, 2x=10, x=5

4 0

3 years ago

-5/4 What is 4 divided by negative 5

Delvig [45]

Answer:

-0.8

Step-by-step explanation:

Hope this helps!! :) :) Please mark Brainlliest.

4 0

3 years ago

The expressions V 60+ n and V2n + 28.

laiz [17]

Answer:

1.→n=15

2.→n=0

Step-by-step explanation:

The two expressions given are

⇒A number is said to be rational if it can be expressed in the form of , where ,q≠0.And it's decimal expansion will be either terminating or non terminating repeating.

We have to find smallest value of n, for which each of these two expressions will be rational.

So, 1.→n=15

and 2.→n=0

Have a nice day! -Alpha

7 0

4 years ago

Tom’s telephone company charges a flat fee of $33.00 a month, plus $0.10 a minute for all long-distance calls made during the mo

OleMash [197]

F(x)= 33+.10x. Since its 10 cents per minute, x would represent the number of minutes Tom uses.

6 0

3 years ago