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3 years ago

Math question 10-(2x4)+12=

Mathematics

2 answers:

pentagon [3]3 years ago

8 0

Do what's in parthesis first 2*4 is 8 then solve from left to right.

miskamm [114]3 years ago

3 0

I think it's 14.....thank you

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Find all solutions to the equation (x² + 5x + 6)(x² − 3x − 4) = 0.

Soloha48 [4]

Answer:

The solutions are:

$x=-2,\:x=-3,\:x=-1,\:x=4$

Step-by-step explanation:

To find the solutions to the equation $\left(x^2+5x+6\right)\left(x^2-3x-4\right)=0$ you need to:

Factor $\left(x^2+5x+6\right)$

Break the expression into groups

$x^2+5x+6=\left(x^2+2x\right)+\left(3x+6\right)$

Factor out $x$ from $(x^2+2x)$

$x^2+2x=x\left(x+2\right)$

Factor out 3 from $3x+6$

$3x+6=3\left(x+2\right)$

$x^2+5x+6=x\left(x+2\right)+3\left(x+2\right)\\\\\mathrm{Factor\:out\:common\:term\:}x+2\\\\x^2+5x+6=\left(x+2\right)\left(x+3\right)$

Factor $\left(x^2-3x-4\right)$

$x^2-3x-4=\left(x^2+x\right)+\left(-4x-4\right)\\\\x^2-3x-4=x\left(x+1\right)-4\left(x+1\right)\\\\x^2-3x-4=\left(x+1\right)\left(x-4\right)$

Therefore

$\left(x^2+5x+6\right)\left(x^2-3x-4\right)=\left(x+2\right)\left(x+3\right)\left(x+1\right)\left(x-4\right)=0$

Using the Zero Factor Theorem:

5 0

4 years ago

Help with number one please

kicyunya [14]

Answer:

The solution to the set of linear equations is:

$(5,-4)$

Step-by-step explanation:

Hey there!

In order to solve this system of equations, we can put the equations equal to each other since both equations are equal to y

$6-2x=-4x+16$

Now we simplify

$2x=10$ ---> $x=5$

So now that we know that x is equal to 5, we can find the value of y

let's substitute it in one of the equations

$y=6-2(5)$ ---> $y=-4$

So now we know that the point where the two equations intersect is:

$(5,-4)$

This is going to be our solution

The graph is in an attachment below

8 0

3 years ago

faltersainse [42]

Answer:

Step-by-step explanation:

Let us assume the Bags of oranges be x

Now the cost price is 2500x

Sale price N = 90,000

Loss =20%

As we know that

Cost price= selling price × 100/ 100-percentage loss

= 90,000 × 100/ 100- 20

= 90,000 × 100 /80

Cost price= 112,500

Now

The Number of bags of oranges is

= 112,500 ÷ 2500

= 45

4 0

3 years ago

A fence borders a rectangular piece of land.The land has an area of 13,250 square feet and a width of 50 feet .

Alex787 [66]

13 250+
50
________
13 300

4 0

4 years ago

Find the sum or difference of the following.<br> (42y + 7) - (3y + 6)

Furkat [3]

Answer:

y=-1/39

Step-by-step explanation:

(42y+7)-(3y+6)

(39y+7)-(6)

(39y)=-1

y=-1/39

6 0

3 years ago