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4 years ago

What are the factors of x2 + 3x – 4? (x + 4) and (x – 4) (x + 3) and (x – 4) (x + 4) and (x – 1) (x + 3) and (x – 1)

Mathematics

2 answers:

insens350 [35]4 years ago

8 0

Answer:

so the factors of x²+3x-4 are (x-1)(x+4

Step-by-step explanation:

Let x²+3x-4=0

by using sum and product rule

x²+4x-1x-4=0

Taking common

x(x+4)-1(x+4)=0

(x-1)(x+4)=0

i hope this will help you :)

goldfiish [28.3K]4 years ago

4 0

Answer:

(x - 1) (x + 4)

Step-by-step explanation:

Product = -4

Sum = 3

Factors = -1 , 4

x² + 3x - 4 = x²- 1x + 4x - 4

= x(x -1) + 4(x - 1)

= (x - 1) (x + 4)

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Ms. Brack wants to hang a bulletin board with

Eduardwww [97]

Answer:

He needs 8.75 ft² polka dot paper to cover the board.

Step-by-step explanation:

How much polka dot paper she need to cover the board is the area of the board . The is a rectangle with length 3.5 ft long and width of 2.5 ft wide .

The area of the board(rectangle) = length × width

Area = LW

where

L= 3.5 ft

W = 2.5 ft

Area = 3.5 × 2.5

Area = 8.75 ft²

He needs 8.75 ft² polka dot paper to cover the board.

7 0

4 years ago

I don't know what's it asking me. what should I do?

Anton [14]

$n$ - a number
$n^2$ - its square
$n+n^2$ - the sum
$\leq$ - less than or equal
negative three - I don't have to explain this one, do I?

$n+n^2\leq-3$ - the sum of a number and its square is less than or equal negative three

6 0

3 years ago

Read 2 more answers

Find the x and y intercepts of -7xt6y=5

iren2701 [21]

-7x + 6y =5
x intercept. y=0
-7(x) + 6(0)=5
x=-5/7

y intercept, x=0
-7(0)+6(y) =5
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3 0

3 years ago

Combine the following expressions:

melisa1 [442]

ANSWER

$(4n - 1)\sqrt{3 n} + 3\sqrt{n}$

EXPLANATION

The given expression is

$\sqrt{48 {n}^{3} } + \sqrt{9n} - \sqrt{3n}$

We remove the perfect squares under the radical sign.

$\sqrt{16 {n}^{2} \times3 n} + \sqrt{9n} - \sqrt{3n}$

We can now take square root of the perfect squares and simplify them further.

$\sqrt{16 {n}^{2}} \times \sqrt{3 n} + \sqrt{9} \times \sqrt{n} - \sqrt{3n}$

This simplifies to:

$4n\sqrt{3 n} + 3\sqrt{n} - \sqrt{3n}$

This further simplifies to:

$(4n - 1)\sqrt{3 n} + 3\sqrt{n}$

3 0

3 years ago

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A scale on a blue print drawing of a house shows that 10 1010 centimeters represents 2 22 meters. What number of actual meters a

Ivenika [448]

Answer:

On Blue print 18 centimeters represents <u>3.6 meters</u>.

Step-by-step explanation:

Given:

Scale is 10 cm = 2 m

We need to find the number of actual meters are represented by 18 1818 centimeters on the blue print.

Solution:

Now we know that;

10 cm = 2 m

so 1 cm = Number of meters in 1 cm.

By using Unitary method we get;

Number of meters in 1 cm = $\frac{2}{10}=0.2\ m$

Now we know that;

1 cm = 0.2 m

18 cm = Number of meters in 18 cm.

Again by using Unitary method we get;

Number of meters in 18 cm = $0.2\times 18 = 3.6\ m$

Hence On Blue print 18 centimeters represents <u>3.6 meters</u>.

7 0

3 years ago