2 years ago

What is the first step in solving for z in the equation 5z - 4 = 26

Mathematics

1 answer:

Andrei [34K]2 years ago

3 0

You would 4 to both sides of the equation

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south high school has 85 students more than North High School. The total number for both schools is 1495. How many students are

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3 years ago

HELPPP DOES ANYONE KNOW THE ANSWER???

IRISSAK [1]

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Step-by-step explanation:

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Solve (x + 4)2 – 3(x + 4) – 3 = 0 using substitution. u = Select the solution(s) of the original equation.

bezimeni [28]

Answer:

$\dfrac{-5-\sqrt{21}}{2},\ \dfrac{-5+\sqrt{21}}{2}$

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For the equation $(x+4)^2-3(x+4)-3=0$ use the substitution $u=x+4.$ Then the equation will take look

$u^2-3u-3=0.$

Solve this quadratic equation:

$D=(-3)^2-4\cdot 1\cdot (-3)=9+12=21,\\ \\u_{1,2}=\dfrac{-(-3)\pm \sqrt{21}}{2}=\dfrac{3\pm\sqrt{21}}{2}.$

Thus,

$x+4=\dfrac{3-\sqrt{21}}{2}\text{ or }x+4=\dfrac{3+\sqrt{21}}{2},\\ \\x_1=\dfrac{3-\sqrt{21}}{2}-4=\dfrac{-5-\sqrt{21}}{2}\text{ or }x_2=\dfrac{3+\sqrt{21}}{2}-4=\dfrac{-5+\sqrt{21}}{2}.$

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Find the equation of line passing thorugh the point (5,7) and parellel line ,y=5x +4

Savatey [412]

The answer is 0 i hope i helped honey

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