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3 years ago

Maths Question involving factorising.

Mathematics

1 answer:

Bumek [7]3 years ago

6 0

Answer:

(x-1)(x+7)

Step-by-step explanation:

x = 1

x = -7

These are the roots found using the quadratic formula.

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A wooden plank is leaning against a wall. The bottom of the plank is 3 feet from the wall. Answer each of the following question

Nadusha1986 [10]

AB = ==> distance between the bottom of the plank; and the wall ===> 3 ft.

C ====> 49 degrees

For letter a, to solve for AC:

AC ==> HYPOTENUSE. The angle C is the OPPOSITE side of AB.

use sine :

sin A ===> opposite/hypotenuse

Solve:

sin 49 ====> 3/AC

AC ====> 3 / sin 49

AC ====> 3.96 ft.

For letter b, to solve for BC:

We are now given with the base (3 ft.); and; the hypotenuse (3.96 ft.) so we can use the Pythagorean theorem:

a^2 + b^2 = c^2

Let:

a ===> AB

b ===> BC

c ===> AC

(AB)^2 + (BC)^2 ===> (AC)^2

3^2 + (BC)^2 ===> (3.96)^2

(BC)^2 ===> (3.96)^2 - 3^2

(BC)^2 ===> 6.6816

sqrt (BC)^2 ===> sqrt 6.6816

Answer: BC ===> 2.58 ft.

Hope that helps!!!! : )

3 0

3 years ago

Can someone help me pls

atroni [7]

Answer:

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I wanna believe

Hit you with some truth

When we're together

I can't even lie

You and me got chemistry

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Feel it when you're close to me

And out of reach

And in between

We got la la la, lots of good vibrations

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You and me got chemistry

Got, got chemistry

Got chemistry

Any time or place, no shame

You got my attention now

Can anybody ride my wave the same

You know what I'm talkin' about

Hit you with some truth

You're like a dream

I wanna believe

Hit you with some truth

When we're together

I can't even lie

You and me got chemistry

Got, got chemistry

Got chemistry

Feel it when you're close to me

And out of reach

And in between

We got la la la, lots of good vibrations

We got la la la, we got la la la

You and me got chemistry

Got, got chemistry

Got chemistry

You and me got, you and me got

You and me got chemistry, got, got chemistry,

Got chemistry

Feel it when you're close to me

And out of reach

And in between

Ohh we got chemistry

Feel it when you're close to me

And out of reach

And in between

Ohh, we got la, la, la, we got lots of good vibrations

We got la, la, la, we got la, la, la

You and me got chemistry, got, got chemistry,

Got chemistry

Oh, no, oh, yeah

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Yeah

'Cause you and me got

6 0

3 years ago

N divided by 8 in an algebraic expression

rusak2 [61]

Answer:

n/8

Step-by-step explanation:

5 0

3 years ago

Which value is a solution to the open sentence?

viva [34]

C is the answer, just plug every single answer option into the equation and solve each one then u could find the answer

8 0

3 years ago

Please find the answer!

kupik [55]

1)9 , 2)16,3)225, 4)196 5)25 , 6)256

3 0

3 years ago