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3 years ago

Solving equations by combining like terms

Mathematics

1 answer:

anzhelika [568]3 years ago

5 0

Answer:

its kinda blurry

Step-by-step explanation:

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The solution to the problem -4(x - 3) ≤ 16 is that x is greater than or equal to

otez555 [7]

Answer:

x is equal to.

Step-by-step explanation:

Just solve the equation for x. Whatever you get for x, plug it into the x in the equation.

Solve from there!

Hope this helped.

5 0

3 years ago

Find the discriminant, and determine the number of real solutions. then solve x^2 +8x+20=0

vodomira [7]

Answer:

Part 1) The quadratic equation has zero real solutions

Part 2) The solutions are

$x_1=-4+2i$ and $x_2=-4-2i$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+8x+20=0$

$a=1\\b=8\\c=20$

The discriminant is equal to

$D=(b^{2}-4ac)$

If D=0 -----> the quadratic equation has only one real solution

If D>0 -----> the quadratic equation has two real solutions

If D<0 -----> the quadratic equation has two complex solutions

<em>Find the value of D</em>

$D=8^{2}-4(1)(20)=-16$ -----> the quadratic equation has two complex solutions

<em>Find out the solutions</em>

substitute the values of a,b and c in the formula

$x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(20)}} {2(1)}$

$x=\frac{-8(+/-)\sqrt{-16}} {2}$

Remember that

$i=\sqrt{-1}$

$x=\frac{-8(+/-)4i} {2}$

$x_1=\frac{-8(+)4i} {2}=-4+2i$

$x_2=\frac{-8(-)4i} {2}=-4-2i$

8 0

3 years ago

8h + 16h -12 = 24h -12

lys-0071 [83]

To solve for h
8h +16h equals 24 h
24h-12= 24h-12
these are equal so no !after what number you put in for h it will be a true statement. in situations like these my math teacher told me to put "all sol."

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3 years ago

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Please help i will give crowns

-Dominant- [34]

Answer: 20

Step-by-step explanation: see screenshot

7 0

2 years ago

Can some answer pls.

kirill [66]

Answer:

E. (7,-2)

Step-by-step explanation:

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3 years ago

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