Which of the following is x=-5 a solution a) x+10=-5 b)-x^2 +50=25 c) [2x]=10 d) x is less than 10 e)
Question:
Answers
It might be letter c
-x?+50=250
Step-by-step explanation:
-x=-5
if we put the value of x in the equation
b. -x^2 + 50 = 25
c. |2x| = 10
d. x < 0
e. 2x < 10
Step-by-step explanation:
x = -5
-(-5)² + 50
-25 + 50 = 25
|2(-5)| = |-10| = 10
-5 < 0
2(-5) = -10 < 10
C and D
Step-by-step explanation:
Plug X in and see which equations/expressions are true
I think the answer is 3 but I’m not sure.
Hope this helps!
Let's check each of the cases to determine the solution of the problem
case A) we have
[tex]x+10=-5[/tex]
Substitute the value of [tex]x=-5[/tex] in the equation
[tex](-5)+10=-5[/tex]
[tex]5=-5[/tex] ------> the equation is not true
therefore
The value of [tex]x=-5[/tex] is not a solution of the equation
case B) we have
[tex]-x^{2} +50=25[/tex]
Substitute the value of [tex]x=-5[/tex] in the equation
[tex]-(-5)^{2} +50=25[/tex]
[tex]-(25) +50=25[/tex]
[tex]25=25[/tex] ------> the equation is true
therefore
The value of [tex]x=-5[/tex] is a solution of the equation [tex]-x^{2} +50=25[/tex]
case C) we have
[tex]\left|2x\right|=10[/tex]
Substitute the value of [tex]x=-5[/tex] in the equation
[tex]\left|2(-5)\right|=10[/tex]
[tex]\left|-10\right|=10[/tex]
[tex]10=10[/tex] -----> the equation is true
therefore
The value of [tex]x=-5[/tex] is a solution of the equation [tex]\left|2x\right|=10[/tex]
case D) we have
[tex]x < 0[/tex]
Substitute the value of [tex]x=-5[/tex] in the inequality
[tex]-5 < 0[/tex] --------> the inequality is true
therefore
The value of [tex]x=-5[/tex] is a solution of the inequality [tex]x < 0[/tex]
case E) we have
[tex]2x[/tex]
Substitute the value of [tex]x=-5[/tex] in the inequality
[tex]2*(-5) < 10[/tex]
[tex]-10 < 10[/tex] --------> the inequality is true
therefore
The value of [tex]x=-5[/tex] is a solution of the inequality [tex]2x[/tex]
the answer is
[tex]-x^{2} +50=25[/tex]
[tex]\left|2x\right|=10[/tex]
[tex]x < 0[/tex]
[tex]2x[/tex]
Hello there!
Since we're looking for an equation to have a solution of x = -5, let's solve them from answer choice "A.)" to answer choice "D.)"
x + 10 = -5
x = -15
A.) is not correct.
Let's try B.)
-x^2 + 50 = 25
x^2 = -25
x = -5
Answer choice B.) is correct.
Let's continue looking for answer choices, just in case.
Let's look at answer choice C.)
2x = 10
x = 5
This answer is not correct.
Let's look at answer choice D.)
x < 0
This means x is less than 0, or a negative number.
This answer is not specifically correct.
Let's look at answer choice E.)
2x < 10
x < 5
This is less than 5, but does not specifically answer our chances.
Your answer is B.)
I hope this helps!
If 5x = -25 what does x equal? if 4x = -20 what does x equal? if 3x = -15 what does x equal? if 2x = -10 what does x equal?
The correct answer is C and D
Uhhh where’s the answer choices?