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2 years ago

(X+3)(x-4) what is the middle term in he simplified product?

Mathematics

2 answers:

Grace [21]2 years ago

8 0

Well, FOIL it first:

First

Outside

Inside

Last

x*x=x^2

x* -4= -4x

x*3= 3x

3* -4= -12

Together, the simplified product is:

x^2 + -1x-12

So, the middle term is -1

MakcuM [25]2 years ago

5 0

Answer:

The middle term is - x

Step-by-step explanation:

Use Foil

F: x * x = x^2

O: -4 * x = - 4x

I: 3*x = 3x

L: 3 * - 4 = -12

F+O+I+L = x^2 - 4x + 3x - 12

F+O+I+L = x^2 - x - 12

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Can some one explain to me what substitution is and how to use it to solve equations?

Yakvenalex [24]

Answer:

Step-by-step explanation:

Say that your equation is 2x+4=8, x=2

you would plug in the 2 where your x is so, 2(2) +4=8

then you'd solve regularly.

Hope my answer has helped you!

5 0

3 years ago

I feel like being nice, first two answers will get 50 points, the first one to answer gets the brainliest.. (You can put any ans

garik1379 [7]

Answer:

you are so so nice, to give away such big points...may God bless you and stay home and be safe :)

Step-by-step explanation:

1 x 1 is obviously 1

any number multiplied by one that answers that number is the same number.

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3 years ago

A safety regulation states that the maximum angle of elevation for a rescue ladder is 72°. A fire department's longest ladder is

Julli [10]

Answer:

The maximum safe rescue height is 104.6 feet above the height of the ground.

Step-by-step explanation:

Consider a triangle ABC where C is the point where the rescue ladder is standing and AB be the building and Ladder making an angle of 72° as shown.

We have to find the height of the building.

Let x be the height of building

Using Trigonometric ratio,

$\sin C=\frac{\text{Perpendicular}}{\text{Hypotenuse}}$

$\sin 72^{\circ}=\frac{AB}{BC}$

$\sin 72^{\circ}=\frac{x}{110}$

$x=110 \times \sin 72^{\circ}$

$x=104.6$

So, the maximum safe rescue height is 104.6 feet above the height of

the ground.

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3 years ago

Read 2 more answers

There are 32 players on the football team in total. If 75% of the students are in seventh grade, how many seventh graders are on

Mars2501 [29]

Answer:

There's 24 seventh graders

8 0

2 years ago

Find the area of the figure.

seraphim [82]

$\huge \bf༆ Answer ༄$

At first Divide the figure into two rectangles, I and Il

Area of figure l is ~

$\sf24 \times (40 - 30)$

$\sf24 \times 10$

$\sf240 \: \: ft {}^{2}$

Area of figure ll is ~

$\sf 18 \times 30$

$\sf540 \: ft{}^{2}$

Area of whole figure = Area ( l + ll )

that is equal to ~

$\sf240 + 540$

$\sf780 \: \: ft{}^{2}$

7 0

2 years ago