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Kamila [148]
3 years ago
15

Never mind don't need help

Mathematics
1 answer:
madreJ [45]3 years ago
6 0

Answer:

thanks for the points

Step-by-step explanation:

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What are the solution(s) of x squared minus 4 = 0? x = negative 4 or x = 4 x = negative 2 or x = 2 x = 2 x = 4
frosja888 [35]

Answer:

Step-by-step explanation:

The expression is

x^2 - 4

This is a quadratic expression.

To find the solution, we will equate the the expression to zero. It becomes

x^2 - 4 = 0

Add 4 to the left hand side of the equation and the right hand side of the equation. It becomes.

x^2 - 4 + 4 = 0 + 4

x^2 = 4

Take square root of the right hand side of the equation and left hand side of the equation. It becomes

√x^2 = √4

x = ± 2

x = 2 or x = - 2

7 0
3 years ago
Read 2 more answers
2n + 3 = -3.2 what is the answer to n
Vlad1618 [11]

Answer:n=-3.1

Step-by-step explanation:

2n + 3 = -3.2

Subtract 3 on both sides

2n+3-3=-3.2-3

2n=-6.2

Divide 2 on both sides

2n/2=-6.2/2

n=-3.1

6 0
2 years ago
Read 2 more answers
I need help<br> <img src="https://tex.z-dn.net/?f=%5Cbf%203x-5%3D16" id="TexFormula1" title="\bf 3x-5=16" alt="\bf 3x-5=16" alig
photoshop1234 [79]

Answer: x = 7

Step-by-step explanation:

do opposites to both sides. what is the opposite of -5? it would be plus 5.

add 5 to both sides

3x = 21

now what is the opposite of 3 times x? 3 divided by.

divide 3 to both sides

x = 7

4 0
3 years ago
Read 2 more answers
HELP NEEDED A.S.A.P. PLEASE &amp; THANK YOU!!!!!!
andreev551 [17]
Hello,

Answer B

y=-x^4+1
y'=-4x^3
y"=-12x² is always <0 : concavity downside.
4 0
3 years ago
Explain how to solve 4^(x+3)=7 using the change of base formula log_by=log y/ log b. Round to the nearest thousandth
HACTEHA [7]

Answer:

x = -1.59

Step-by-step explanation:

We are here given a equation and we need to solve out for x. The given equation is ,

\sf\longrightarrow 4^{( x +3)}= 7

Take log to the base " e " on both sides , so that we can remove the variable from the exponent .

\sf\longrightarrow log_e 4^{x+3}= log_e 7

Simplify using the property of log , \sf log a^m = m log a , we have ,

\sf\longrightarrow (x + 3) ln 4 = ln 7

Distribute by opening the brackets ,

\sf\longrightarrow  x ln 4 + 3 ln 4 = ln 7

This can be written as ,

\sf\longrightarrow x ln 4 = ln 7 - 3ln4

Divide both sides by ln 4 ,

\sf\longrightarrow x = \dfrac{ ln7}{ln 4 } - \dfrac{ 3ln4}{ln4}

Simplify ,

\sf\longrightarrow x = \dfrac{ ln4 }{ln7 } -3

On simplifying , we will get ,

\sf\longrightarrow \boxed{\blue{\sf x = -1.59 }}

5 0
3 years ago
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